EP0804888A1 - Improvements in adjusting and control devices of moving and deformable parts in office chairs - Google Patents
Improvements in adjusting and control devices of moving and deformable parts in office chairs Download PDFInfo
- Publication number
- EP0804888A1 EP0804888A1 EP96440031A EP96440031A EP0804888A1 EP 0804888 A1 EP0804888 A1 EP 0804888A1 EP 96440031 A EP96440031 A EP 96440031A EP 96440031 A EP96440031 A EP 96440031A EP 0804888 A1 EP0804888 A1 EP 0804888A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- seat
- rotation
- backrest
- tilting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 230000009471 action Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 15
- 230000008901 benefit Effects 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/01—Arrangements of two or more controlling members with respect to one another
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
- A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20408—Constant tension sustaining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20732—Handles
- Y10T74/20834—Hand wheels
- Y10T74/2084—Knob or dial
Definitions
- the present invention relates to improvements to office chairs, and it relates more particularly to improvements to the adjustment and control systems of the various movable and / or deformable elements of an office chair.
- An office chair essentially consists of a fixed base on which is mounted, generally rotary, an assembly formed by a seat and a backrest, which are generally adjustable and / or deformable to ensure user comfort, in depending on its size, conformation and working conditions.
- the invention aims to eliminate this drawback, and therefore relates to an office chair comprising means for adjusting the various mobile and / or deformable elements with which it is equipped, and which is characterized in that the controls of the assembly said adjustment means are grouped together at the same point on the seat in a single multifunctional member or "control satellite".
- patent WO 81/03605 and French patent No. 2,460,648 each describe an armchair, the adjustment of the seat height and the inclination of the backrest being controlled by a single rotary member, namely a cam, acting according to its angular position on one or the other of two valves equipping two pneumatic cylinders determining said adjustments.
- This control member being unique, it does not allow the user to differentiate one or the other setting.
- European Patent No. 385,473 describes a seat having height, tilt and tilt tension adjustment systems, which are controlled by only two separate telescopic elements. However, it is the inclination adjustment means which, being coupled to the tension adjustment means, must be actuated to cause them to move. There is therefore no clear differentiation of one or the other setting.
- European Patent No. 592,008 also describes a mechanism in which the tension control means moves to engage the tilt adjustment means; as before, the common adjustment means are coaxial outside the housing, without offering the user any means of differentiation with regard to the adjustment of the voltage.
- European patent N ° 549,026 describes a chair comprising a mechanism which can also be described as global, but very simple to control at will the height of the seat and the inclination of the backrest, this mechanism comprising a operating lever can take different positions in which, by a set of articulations, it gives different configurations to the seat elements, a bit like a gearbox control lever. Strictly speaking, it is therefore not a question of controlling settings of a different nature.
- the invention relates to a seat as defined above and in which, in said single satellite, said commands are clearly differentiated by the type of movement to be performed on a corresponding corresponding element of said satellite in order to actuate each command, independently of the others.
- Such an arrangement has the considerable advantage of making the controls more intuitive, since they are located in the same place but clearly clearly differentiated in terms of movement to be carried out to actuate the control. Furthermore, thanks to the design of this satellite, these controls are easier - in particular for adjusting the tilting tension of the seat which is on the side of the seat and no longer under the seat as is usually the case. the case - and more aesthetic, since several levers and levers are replaced by a single "control satellite".
- the height of the seat being adjustable in a known manner by a pneumatic system involving a jack, for example, a cartridge preferably with compressed gas capable of supplying two coaxial cylinders, the communication between these cylinders, with a view to their mutual sliding, being determined by the opening of a valve, said opening is controlled by traction on a cable, this traction itself resulting from the axial translation of an element carried by said satellite, the along said first axis.
- the tilting tension of the seat being adjustable in a known manner by a system involving the variation of the torsion applied to at least one helical spring rolled on the axis of said tilting, said variation results from the position, along a thread carried by said first axis, with a nut, under the effect of the rotation of said first axis, while the blocking of the backrest in any position of the backrest results from the action, on a portion of said backrest, of a cam rotary, the rotation of this cam resulting, via a linkage, from a rotation of said second axis.
- the office chair comprises in this embodiment, a multifunction satellite, in which, on a first axis is mounted in translation a member controlling the traction of a cable determining the opening and closing of the valve of the seat height adjustment system with respect to its base, on this same first axis is mounted on a threaded portion a nut movable axially under the effect of the rotation of said first axis, this nut determining the variation in tension at least one torsion spring to which the seat is subjected, in order to adjust the tilting tension of said seat, and finally around this same first axis a second axis is rotatably mounted, the rotation of which determines the action of a member ensuring the locking of the backrest in any one of at least two predetermined positions, for example either in a vertical position or in an inclined position.
- the above definition relates to a preferred embodiment of the invention, but many construction variants can be envisaged, the essential aim sought being the regrouping at a single point, preferably located on the side of the seated, easy to reach by the user in the seated position, with all the controls for adjusting the various functions allowing the seat to be best adapted to the comfort of the user, whatever its size, shape or work he has to perform.
- the same seat can be arranged so as to allow other functions to be fulfilled, such as for example the transverse distribution of the flexibility of the seat. , as described for example in French Patent No.
- the lower portion of the casing containing the various adjustment and control mechanisms of an office chair is designated by 1 and which is fixedly mounted on the upper portion C of a support column, itself pivoting on the lower portion C ′ of the same column, which is fixed to the base proper (not shown), in a conventional manner.
- the upper portion 2 of the same casing is pivotally mounted with respect to this portion 1, around an axis 3.
- the portion 1 is associated with the seat (not shown), while the portion 2 is associated with the backrest (not shown).
- these three adjustments are controlled by three levers or levers distributed under the seat, acting individually and independently on the three mechanisms.
- the height adjustment of the seat is controlled by action on the crown 8, so as to pull the sector 9, bringing it closer to the button 5.
- a circular slot is made, crossed by the end of the cable 10, ending in a bead 13, which holds it in place. Thanks to this circular slot, this maneuver is possible whatever the angular position of the sector 9, which is necessary due to the second function of the crown 8, which is filled by rotation.
- the cable 10, from sector 9, travels below the fixed portion 1 of the casing, inside which it penetrates through a hole 14 (FIG. 2) to hang on, for example by a bead 15, to the end of a trigger finger 16, resiliently held by a bearing, 17 on the trigger valve 18 of a compressed air cartridge associated with the seat height adjustment system, the principle of which was recalled above.
- the elastic bearing 17 normally maintains the valve 18 in the closed state, that is to say blocks the system at any chosen height, while exerting a restoring force on the cable 10.
- By translational operation of the crown 8, exerts traction on the cable 10, which actuates the trigger finger 16 and opens the valve 18, which makes it possible to modify the height of the seat at will. Stopping this translational action on the crown 8 determines the blocking of the seat height in the new position chosen by closing the valve 18.
- connection rod 11 hooked at one end to the sector 9 is for this purpose hooked at its other end to a connecting rod 19 fixed in rotation with an axis 20 carrying cams 21 made of plastic, which, in at least one position, block by friction against the tilting portion 2, that is to say the backrest, at a given inclination, while, in another position, they release said backrest.
- cams 21 made of plastic, which, in at least one position, block by friction against the tilting portion 2, that is to say the backrest, at a given inclination, while, in another position, they release said backrest.
- the flexibility of the operation is ensured for example by a leaf spring 22 pressing on the cam 21.
- Flexible stops such as 23 avoid too abrupt stopping of the backrest in the released position.
- Such an inclination adjustment can be designed in many forms, for example blocking the backrest in the advanced position, multi-position blocking, a tilting limitation or any other function relating to the inclination of a backrest.
- the invention naturally includes the control of all these variants, such as that illustrated in FIG. 6 which will be described below.
- Button 5 also allows the control of a third functionality, namely the adjustment of the seat tilting tension.
- the axis 4 which can rotate freely inside the axis 7, enters the interior of the portion 1 of the casing, where it ends in a threaded portion 6.
- a nut 24 ( Figures 1 and 4a) which, via a stud 25 drives an arm 26 pivotally mounted on an oblique axis 27 ( Figure 4b).
- This arm 26 cooperates with a plate 28 to which are fixed the ends of a couple of torsion springs 29, 29 'wound around the axis 3 of tilting of the portion 2 carrying the backrest.
- the nut 24, fixed in rotation moves axially, in one or the other direction, driving by the pin 25, the arm 26 in pivoting around the oblique axis 27. Because of this obliquity, the plate 28 will take a tilting movement, by pressing more or less on the ends of the springs 29, 29 ', by modifying the torsion of the springs 29, 29' and consequently the tension tilting, that is to say the effort to be exerted by the user to tilt the backrest.
- FIG. 5 illustrates a variant of the mechanism for locking the inclination of the backrest.
- a spring 31 relieves "the part 21 'at each change of rib.
- the satellite is shown here located laterally with respect to the seat: it could as well be located at any other point, for practical and / or aesthetic reasons.
- This satellite combines the commands of three particular settings: it could as well group a different number of equally different settings, depending on the needs of the user. It is therefore understood that the invention can only be limited by the scope of the claims below.
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
- Vehicle Body Suspensions (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
La présente invention concerne des perfectionnements aux sièges de bureau, et elle vise plus particulièrement des perfectionnements aux systèmes de réglage et de commande des divers éléments mobiles et/ou déformables d'un siège de bureau.The present invention relates to improvements to office chairs, and it relates more particularly to improvements to the adjustment and control systems of the various movable and / or deformable elements of an office chair.
Un siège de bureau se compose essentiellement d'un piétement fixe sur lequel est monté, généralement rotatif, un ensemble formé d'une assise et d'un dossier, lesquels sont généralement réglables et/ou déformables pour assurer confort de l'utilisateur, en fonction de sa taille, de sa conformation et de ses conditions de travail.An office chair essentially consists of a fixed base on which is mounted, generally rotary, an assembly formed by a seat and a backrest, which are generally adjustable and / or deformable to ensure user comfort, in depending on its size, conformation and working conditions.
A titre d'exemple préférentiel, auquel on se référera dans la suite à titre illustratif :
- Il est connu d'assurer ce genre de montage au moyen d'une colonne à hauteur réglable, généralement par action télescopique entre deux portions grâce à un vérin, et de préférence un système pneumatique faisant intervenir une cartouche notamment à gaz comprimé pouvant alimenter deux cylindres coaxiaux constituant ces deux portions, la commande de la communication entre ces cylindres, permettant leur réglage mutuel en hauteur, étant déterminée par l'ouverture ou la fermeture d'une soupape. Un tel système est décrit par exemple dans le brevet français N° 2 025 110.
- Il est également connu depuis longtemps de permettre le basculement du dossier par rapport à l'assise, avec la possibilité de bloquer ce basculement, soit dans deux positions extrêmes, soit entre une série de positions intermédiaires.
- Il est également connu de permettre un réglage de la tension de basculement du siège, c'est à dire du dossier et/ou de l'assise, par exemple en soumettant ce basculement à au moins un ressort de torsion enroulé autour de l'axe de basculement, ce réglage étant déterminé par le degré de torsion appliqué au ressort ; un mécanisme de ce genre fait par exemple intervenir la position d'un élément mobile en translation.
- It is known to provide this type of mounting by means of a height-adjustable column, generally by telescopic action between two portions by means of a jack, and preferably a pneumatic system involving a cartridge, in particular with compressed gas, which can supply two cylinders. coaxial constituting these two portions, the control of the communication between these cylinders, allowing their mutual height adjustment, being determined by the opening or closing of a valve. Such a system is described for example in French patent No. 2,025,110.
- It has also been known for a long time to allow the backrest to tilt relative to the seat, with the possibility of block this tilting, either in two extreme positions, or between a series of intermediate positions.
- It is also known to allow adjustment of the seat tilting tension, that is to say of the backrest and / or the seat, for example by subjecting this tilting to at least one torsion spring wound around the axis. tilting, this adjustment being determined by the degree of torsion applied to the spring; such a mechanism involves for example the position of a movable element in translation.
Toutes ces possibilités de réglage et de commande présentent l'intérêt d'offrir à l'utilisateur le maximum de confort, quelles que soient sa taille, sa conformation et les conditions d'utilisation du siège.All these adjustment and control possibilities have the advantage of offering the user maximum comfort, whatever its size, shape and conditions of use of the seat.
Elles présentent cependant l'inconvénient d'être séparées et réparties en différents points au-dessous du siège, ce qui impose souvent des tâtonnements à l'utilisateur quand il veut sélectionner le réglage sur lequel il veut agir.However, they have the disadvantage of being separated and distributed at different points below the seat, which often requires trial and error on the user when he wants to select the setting on which he wants to act.
L'invention vise à éliminer cet inconvénient, et concerne, en conséquence, un siège de bureau comportant des moyens de réglage des divers éléments mobiles et/ou déformables dont il est équipé, et qui est caractérisé en ce que les commandes de l'ensemble desdits moyens de réglage sont regroupés en un même point du siège dans un organe unique multifonctions ou "satellite de commande".The invention aims to eliminate this drawback, and therefore relates to an office chair comprising means for adjusting the various mobile and / or deformable elements with which it is equipped, and which is characterized in that the controls of the assembly said adjustment means are grouped together at the same point on the seat in a single multifunctional member or "control satellite".
Il existe déjà des sièges dans lesquels certaines commandes sont associées ou couplées de manière à être actionnées par un nombre d'organes inférieur au nombre de ces commandes.There are already seats in which certain commands are associated or coupled so as to be actuated by a number of members less than the number of these commands.
Ainsi, par exemple, le brevet WO 81/03605 et le brevet français N° 2 460 648 décrivent chacun un fauteuil dont le réglage de la hauteur de l'assise et de l'inclinaison du dossier sont commandées par un organe rotatif unique, à savoir une came, agissant selon sa position angulaire sur l'une ou l'autre de deux soupapes équipant deux cylindres pneumatiques déterminant lesdits réglages. Cet organe de commande étant unique, il ne permet pas à l'utilisateur de différencier l'un ou l'autre réglage.Thus, for example, patent WO 81/03605 and French patent No. 2,460,648 each describe an armchair, the adjustment of the seat height and the inclination of the backrest being controlled by a single rotary member, namely a cam, acting according to its angular position on one or the other of two valves equipping two pneumatic cylinders determining said adjustments. This control member being unique, it does not allow the user to differentiate one or the other setting.
De même, le brevet européen N° 385 473 décrit un siège possédant des systèmes de réglage de la hauteur, de l'inclinaison et de la tension de basculement, qui sont commandés par seulement deux éléments distincts télescopiques. Toutefois, ce sont les moyens de réglage de l'inclinaison qui, étant couplés au moyen de réglage de tension, doivent être actionnés pour provoquer le déplacement de ces derniers. Il n'y a donc pas de différenciation claire de l'un ou l'autre réglage.Likewise, European Patent No. 385,473 describes a seat having height, tilt and tilt tension adjustment systems, which are controlled by only two separate telescopic elements. However, it is the inclination adjustment means which, being coupled to the tension adjustment means, must be actuated to cause them to move. There is therefore no clear differentiation of one or the other setting.
De la même façon, le brevet européen N° 592 008 décrit également un mécanisme dans lequel le moyen de commande de la tension se déplace pour venir en prise avec le moyen de réglage de l'inclinaison ; comme précédemment, les moyens de réglage commun sont coaxiaux à l'extérieur du boîtier, sans offrir à l'utilisateur de moyens de différenciation à l'égard du réglage de la tension.Likewise, European Patent No. 592,008 also describes a mechanism in which the tension control means moves to engage the tilt adjustment means; as before, the common adjustment means are coaxial outside the housing, without offering the user any means of differentiation with regard to the adjustment of the voltage.
Dans ces deux derniers documents, le mécanisme est d'ailleurs global pour l'ensemble des fonctions et extrêmement compliqué.In these last two documents, the mechanism is moreover global for all of the functions and extremely complicated.
Par contre, le brevet européen N° 549 026 décrit une chaise comportant un mécanisme que l'on peut qualifier également de global, mais très simple pour commander à volonté la hauteur de l'assise et l'inclinaison du dossier, ce mécanisme comportant un levier de manoeuvre pouvant prendre des positions différentes dans lesquelles, par un jeu d'articulations, il confère des configurations différentes aux éléments du siège, un peu à la manière d'un levier de commande de boîte de vitesses. Il ne s'agit donc pas à à proprement parler de la commande de réglages de nature différente.On the other hand, European patent N ° 549,026 describes a chair comprising a mechanism which can also be described as global, but very simple to control at will the height of the seat and the inclination of the backrest, this mechanism comprising a operating lever can take different positions in which, by a set of articulations, it gives different configurations to the seat elements, a bit like a gearbox control lever. Strictly speaking, it is therefore not a question of controlling settings of a different nature.
On constate donc que, dans la technique antérieure, de nombreuses tentatives ont été faites pour permettre à l'utilisateur d'un siège, de procéder aux différents réglages possibles de ce siège au moyen d'organes regroupant ou accouplant plusieurs commandes entre elles, mais qu'un tel regroupement n'impliquait jamais une différenciation nette desdites commandes.It can therefore be seen that, in the prior art, numerous attempts have been made to allow the user of a seat to make the various possible adjustments of this seat by means of members grouping together or coupling several commands together, but that such a grouping never implied a clear differentiation of said orders.
C'est pourquoi, l'invention vise un siège tel que défini ci-dessus et dans lequel, dans ledit satellite unique, lesdites commandes sont clairement différenciées par le type de mouvement à effectuer sur un élément déterminé correspondant dudit satellite pour actionner chaque commande, indépendamment des autres.This is why, the invention relates to a seat as defined above and in which, in said single satellite, said commands are clearly differentiated by the type of movement to be performed on a corresponding corresponding element of said satellite in order to actuate each command, independently of the others.
Un tel aménagement présente l'avantage considérable de rendre les commandes plus intuitives, puisque celles-ci sont localisées à un même endroit mais nettement clairement différenciées en terme de mouvement à effectuer pour actionner la commande. Par ailleurs, grâce à la conception de ce satellite, ces commandes sont plus aisées - notamment pour le réglage de la tension de basculement du siège qui se trouve sur le côté de l'assise et non plus sous l'assise comme c'est usuellement le cas - et plus esthétiques, puisque plusieurs leviers et manettes sont remplacés par un seul "satellite de commande".Such an arrangement has the considerable advantage of making the controls more intuitive, since they are located in the same place but clearly clearly differentiated in terms of movement to be carried out to actuate the control. Furthermore, thanks to the design of this satellite, these controls are easier - in particular for adjusting the tilting tension of the seat which is on the side of the seat and no longer under the seat as is usually the case. the case - and more aesthetic, since several levers and levers are replaced by a single "control satellite".
Un tel aménagement implique bien entendu un agencement mutuel desdits éléments de commande, cet agencement se traduisant préférentiellement par le fait que :
- une première commande est actionnée par rotation d'un premier axe porté par le satellite ;
- une seconde commande est actionnée par rotation d'un second axe coaxial au premier axe ;
- une troisième commande est actionnée par translation dudit second axe le long du premier axe.
- a first control is actuated by rotation of a first axis carried by the satellite;
- a second control is actuated by rotation of a second axis coaxial with the first axis;
- a third control is actuated by translation of said second axis along the first axis.
Ainsi, dans le cas de l'exemple préférentiel précité, la hauteur du siège étant réglable de façon connue par un système pneumatique faisant intervenir un vérin, par exemple, une cartouche de préférence à gaz comprimé pouvant alimenter deux cylindres coaxiaux, la communication entre ces cylindres, en vue de leur coulissement mutuel, étant déterminée par l'ouverture d'une soupape, ladite ouverture est commandée par traction sur un câble, cette traction résultant elle-même de la translation axiale d'un élément porté par ledit satellite, le long dudit premier axe.Thus, in the case of the aforementioned preferred example, the height of the seat being adjustable in a known manner by a pneumatic system involving a jack, for example, a cartridge preferably with compressed gas capable of supplying two coaxial cylinders, the communication between these cylinders, with a view to their mutual sliding, being determined by the opening of a valve, said opening is controlled by traction on a cable, this traction itself resulting from the axial translation of an element carried by said satellite, the along said first axis.
La tension de basculement du siège étant réglable de façon connue par un système faisant intervenir la variation de la torsion appliquée à au moins un ressort hélicoïdal en roulé sur l'axe dudit basculement, ladite variation résulte de la position, le long d'un filetage porté par ledit premier axe, d'un écrou, sous l'effet de la rotation dudit premier axe, tandis que le blocage du dossier dans une position quelconque du dossier résulte de l'action, sur une portion dudit dossier, d'une came rotative, la rotation de cette came résultant, par l'intermédiaire d'un embiellage, d'une rotation dudit second axe.The tilting tension of the seat being adjustable in a known manner by a system involving the variation of the torsion applied to at least one helical spring rolled on the axis of said tilting, said variation results from the position, along a thread carried by said first axis, with a nut, under the effect of the rotation of said first axis, while the blocking of the backrest in any position of the backrest results from the action, on a portion of said backrest, of a cam rotary, the rotation of this cam resulting, via a linkage, from a rotation of said second axis.
Pour résumer, le siège de bureau selon l'invention comporte dans ce mode de réalisation, un satellite multifonctions, dans lequel, sur un premier axe est monté en translation un organe commandant la traction d'un câble déterminant l'ouverture et la fermeture de la soupape du système de réglage en hauteur du siège par rapport à son piétement, sur ce même premier axe est monté sur une portion filetée un écrou mobile axialement sous l'effet de la rotation dudit premier axe, cet écrou déterminant la variation de la tension d'au moins un ressort de torsion auquel est soumis le siège, en vue de régler la tension de basculement dudit siège, et enfin autour de ce même premier axe est monté rotatif un second axe dont la rotation détermine l'action d'un organe assurant le blocage du dossier dans l'une quelconque d'au moins deux positions prédéterminées, par exemple soit en position verticale, soit en position inclinée.To summarize, the office chair according to the invention comprises in this embodiment, a multifunction satellite, in which, on a first axis is mounted in translation a member controlling the traction of a cable determining the opening and closing of the valve of the seat height adjustment system with respect to its base, on this same first axis is mounted on a threaded portion a nut movable axially under the effect of the rotation of said first axis, this nut determining the variation in tension at least one torsion spring to which the seat is subjected, in order to adjust the tilting tension of said seat, and finally around this same first axis a second axis is rotatably mounted, the rotation of which determines the action of a member ensuring the locking of the backrest in any one of at least two predetermined positions, for example either in a vertical position or in an inclined position.
Bien entendu, la définition qui précède vise un mode de réalisation préféré de l'invention, mais de nombreuses variantes de construction peuvent en être envisagées, le but essentiel recherché étant le regroupement en un seul point, situé de préférence sur le côté de l'assise, facile à atteindre par l'utilisateur en position assise, de toutes les commandes de réglage des différentes fonctions permettant d'adapter au mieux le siège au confort de l'utilisateur, quelles que soient sa taille, sa conformation ou les travaux qu'il a à effectuer. On notera à ce sujet que, outre les fonctions principales citées ici à propos de cette réalisation préférée, le même siège pourra être agencé de manière à permettre de remplir d'autres fonctions telles que par exemple la répartition transversale de la souplesse de l'assise, comme i est décrit par exemple au brevet français N° 2 642 945, ou un basculement différentiel du dossier par rapport à l'assise, le basculement global de l'assise avec le dossier, le basculement individuel de la pente de l'assise, la modification de la courbure du dossier, le réglage de la profondeur d'assise, ou tout autre mécanisme soumis au réglage de l'utilisateur.Of course, the above definition relates to a preferred embodiment of the invention, but many construction variants can be envisaged, the essential aim sought being the regrouping at a single point, preferably located on the side of the seated, easy to reach by the user in the seated position, with all the controls for adjusting the various functions allowing the seat to be best adapted to the comfort of the user, whatever its size, shape or work he has to perform. It will be noted in this regard that, in addition to the main functions cited here in connection with this preferred embodiment, the same seat can be arranged so as to allow other functions to be fulfilled, such as for example the transverse distribution of the flexibility of the seat. , as described for example in French Patent No. 2,642,945, or a differential tilting of the backrest with respect to the seat, the overall tilting of the seat with the backrest, the individual tilting of the slope of the seat , changing the curvature of the backrest, adjusting the seat depth, or any other mechanism subject to user adjustment.
La description qui suit vise à titre d'exemple, un mode préférentiel de réalisation de l'invention, correspondant au dessin annexé, sur lequel :
- La figure 1 est une vue de dessus par l'avant de l'ensemble des mécanismes de réglage et de commande d'un siège de bureau équipé d'un satellite selon l'invention, les éléments constituant le siège proprement dit, à savoir l'assise et le dossier, étant omis, et la portion mobile du carter de ce mécanisme étant partiellement arrachée ;
- La figure 2 est une vue de dessous également par l'avant du même mécanisme ;
- La figure 3 illustre en vue éclatée l'agencement des éléments de commande du satellite.
- Les figures 4a et 4b sont des vues de dessus partielles illustrant plus particulièrement certains éléments du mécanisme de réglage de la tension de basculement.
- La figure 5 illustre une variante du mécanisme de blocage du dossier dans plusieurs positions.
- Figure 1 is a top view from the front of all the adjustment and control mechanisms of an office chair equipped with a satellite according to the invention, the elements constituting the seat itself, namely the 'seat and back, being omitted, and the movable portion of the casing of this mechanism being partially torn off;
- Figure 2 is a bottom view also from the front of the same mechanism;
- FIG. 3 illustrates in exploded view the arrangement of the control elements of the satellite.
- FIGS. 4a and 4b are partial top views illustrating more particularly certain elements of the mechanism for adjusting the tilting tension.
- FIG. 5 illustrates a variant of the mechanism for locking the backrest in several positions.
Ces figures illustrant un seul et même satellite selon l'invention, les mêmes références désignent les mêmes éléments sur toutes les figures.These figures illustrating a single satellite according to the invention, the same references designate the same elements in all the figures.
Sur ce dessin, on a désigné par 1 la portion inférieure du carter contenant les différents mécanismes de réglage et de commande d'un siège de bureau et qui est montée fixe sur la portion supérieure C d'une colonne support, elle-même pivotante sur la portion inférieure C' de la même colonne, qui est fixée au piétement proprement dit (non représenté), de façon classique.In this drawing, the lower portion of the casing containing the various adjustment and control mechanisms of an office chair is designated by 1 and which is fixedly mounted on the upper portion C of a support column, itself pivoting on the lower portion C ′ of the same column, which is fixed to the base proper (not shown), in a conventional manner.
De manière également classique, la portion 2 supérieure du même carter est montée basculante par rapport à cette portion 1, autour d'un axe 3.Also in a conventional manner, the
La portion 1 est associée à l'assise (non représentée), tandis que la portion 2 est associée au dossier (non représenté).The
Dans l'exemple préférentiel illustré ici, le siège bénéfice de trois réglages, qui sont connus individuellement à savoir :
- Un réglage de la hauteur du siège, c'est à dire de la hauteur de l'ensemble solidaire portion supérieure de colonne C / portion fixe ou assise 1, par rapport à l'ensemble piétement/portion inférieure de colonne C' ;
- Un réglage du degré de basculement du dossier, c'est à dire la commande du blocage dans l'une quelconque d'au moins deux positions extrêmes, de la portion basculante 2 par rapport à la portion fixe 1 ; et
- Un réglage de la tension de ce basculement, c'est à dire de la résistance élastique que doit vaincre l'utilisateur pour incliner le dossier en se penchant vers l'arrière, et qui constitue la force de rappel vers l'avant de ce dossier quand l'utilisateur se penche en avant.
- An adjustment of the height of the seat, that is to say of the height of the integral assembly upper portion of column C / fixed or seated
portion 1, relative to the assembly base / lower portion of column C '; - An adjustment of the degree of tilting of the backrest, that is to say the locking control in any one of at least two extreme positions, of the tilting
portion 2 relative to the fixedportion 1; and - An adjustment of the tension of this tilting, that is to say of the elastic resistance that the user must overcome to tilt the backrest by leaning backwards, and which constitutes the forward restoring force of this backrest when the user leans forward.
Habituellement, ces trois réglages sont commandés par trois leviers ou manettes répartis sous le siège, agissant individuellement et indépendamment sur les trois mécanismes.Usually, these three adjustments are controlled by three levers or levers distributed under the seat, acting individually and independently on the three mechanisms.
Selon l'invention, ces réglages sont commandés à partir d'un "satellite" unique se composant, comme on le voit en particulier sur la figure 3 :
- D'un
premier axe 4 entaillé en croix à son extrémité extérieure 4' de manière à venir s'engager dans un logement en croix correspondant d'un bouton de commande 5, et fileté à son extrémité opposée sur uneportion 6, et - D'un
second axe 7 coaxial à l'extérieur dupremier axe 4, mobile en translation et en rotation, et portant a son extrémité extérieure une couronne de commande 8 espacée du bouton 5 par une bague 8', et à son extrémité opposée un secteur 9 agencé comme il sera décrit plus loin de manière à entraîner dans son mouvement detranslation un câble 10 et dans son mouvement de rotation une tige de connexion 11.
- A
first axis 4 notched in a cross at its outer end 4 'so as to engage in a corresponding cross housing of acontrol button 5, and threaded at its opposite end on aportion 6, and - From a
second axis 7 coaxial outside thefirst axis 4, movable in translation and in rotation, and carrying at its outer end acontrol ring 8 spaced from thebutton 5 by a ring 8 ', and at its opposite end asector 9 arranged as will be described later so as to drive in its translational movement acable 10 and in its rotational movement a connectingrod 11.
L'intégralité des réglages et commandes énumérés ci-dessus est exécutée par la manoeuvre du bouton 5 et de la couronne 8, de manière appropriée, comme il va être décrit ci-après.All the settings and commands listed above are carried out by operating the
En premier lieu, le réglage du siège en hauteur est commandé par action sur la couronne 8, de manière à effectuer une traction sur le secteur 9, en le rapprochant du bouton 5. Dans le secteur 9 est pratiquée une fente circulaire, traversée par l'extrémité du câble 10, se terminant par un bourrelet 13, qui le maintient en place. Grâce à cette fente circulaire, cette manoeuvre est possible quelle que soit la position angulaire du secteur 9, ce qui est nécessaire en raison de la seconde fonction de la couronne 8, qui est remplie par rotation.Firstly, the height adjustment of the seat is controlled by action on the
Le câble 10, depuis le secteur 9, chemine au-dessous de la portion fixe 1 du carter, à l'intérieur duquel il pénètre par un trou 14 (figure 2) pour venir s'accrocher, par exemple par un bourrelet 15, à l'extrémité d'un doigt de déclenchement 16, maintenu élastiquement par un palier ,17 sur la soupape de déclenchement 18 d'une cartouche d'air comprimé associé au système de réglage en hauteur du siège dont le principe a été rappelé plus haut.The
Le palier élastique 17 maintient normalement la soupape 18 à l'état fermé, c'est à dire bloque le système à toute hauteur choisie, tout en exerçant une force de rappel sur le câble 10. Par manoeuvre en translation de la couronne 8, on exerce une traction sur le câble 10, ce qui actionne le doigt de déclenchement 16 et ouvre la soupape 18, ce qui permet de modifier à volonté la hauteur du siège. L'arrêt de cette action en translation sur la couronne 8 détermine le blocage de la hauteur du siège dans la nouvelle position choisie par fermeture de la soupape 18.The
En second lieu, le réglage du dossier en inclinaison est commandé par la même couronne 8, mais actionnée cette fois en rotation. La tige de connexion 11, accrochée à une extrémité au secteur 9, est à cet effet accrochée à son autre extrémité à une biellette 19 solidaire en rotation d'un axe 20 portant des cames 21 en plastique, qui, dans au moins une position, bloquent par frottement contre la portion basculante 2, c'est à dire le dossier, selon une inclinaison donnée, tandis que, dans une autre position, elles libèrent ledit dossier. La souplesse de la manoeuvre est assurée par exemple par un ressort à lame 22 appuyant sur la came 21. Des butées souples telles que 23 évitent un arrêt trop brutal du dossier en position libérée.Secondly, the adjustment of the tilting backrest is controlled by the
Un tel réglage en inclinaison peut être conçu sous de nombreuses formes, par exemple le blocage du dossier en position avancée, le blocage multipositions, une limitation de basculement ou toute autre fonction relative à l'inclinaison d'un dossier. L'invention englobe bien entendu la commande de toutes ces variantes, telle que celle illustrée à la figure 6 qui sera décrite ci-après.Such an inclination adjustment can be designed in many forms, for example blocking the backrest in the advanced position, multi-position blocking, a tilting limitation or any other function relating to the inclination of a backrest. The invention naturally includes the control of all these variants, such as that illustrated in FIG. 6 which will be described below.
La manoeuvre de la couronne 8 permet donc déjà le contrôle de deux fonctionnalités du siège. Le bouton 5 permet au surplus le contrôle d'une troisième fonctionnalité, à savoir le réglage de la tension de basculement du siège.The operation of the
A cet effet, l'axe 4, qui peut tourner librement à l'intérieur de l'axe 7, pénètre dans l'intérieur de la portion 1 du carter, où il se termine par une portion filetée 6. Sur cette portion filetée 6 est vissée un écrou 24 (figures 1 et 4a) qui, par l'intermédiaire d'un téton 25 entraîne un bras 26 monté pivotant sur un axe oblique 27 (figure 4b). Ce bras 26 coopère avec une plaque 28 à laquelle sont fixées les extrémités d'un couple de ressorts de torsion 29, 29' enroulés autour de l'axe 3 de basculement de la portion 2 portant le dossier.To this end, the
Par rotation de la portion filetée 6, fixe axialement, l'écrou 24, fixe en rotation, se déplace axialement, dans l'un ou l'autre sens, en entraînant par le téton 25, le bras 26 en pivotement autour de l'axe oblique 27. Du fait de cette obliqueté, la plaque 28 va prendre un mouvement de basculement, en appuyant plus ou moins sur les extrémités des ressorts 29, 29', en modifiant la torsion des ressorts 29, 29' et par conséquent la tension de basculement, c'est à dire l'effort à exercer par l'usager pour incliner le dossier.By rotation of the threaded
La proximité immédiate du bouton 5 et de la couronne 8 permet donc d'assurer le réglage pratiquement simultané de toutes les fonctionnalités du dossier.The immediate proximity of the
On notera que la manoeuvre en translation de la couronne 8 n'interfère pas avec sa manoeuvre en rotation, les jeux entre les différents éléments mobiles permettant le fonctionnement de la tige 11, même quand elle est légèrement oblique en raison de la translation de l'axe 7.It will be noted that the maneuver in translation of the
La figure 5 illustre une variante du mécanisme de blocage de l'inclinaison du dossier. On retrouve dans ce mécanisme la couronne 8, l'axe 7, le secteur 9 et la tige de connexion 11, mais la biellette 19' est située dans un plan perpendiculaire à celui dans lequel opérait la biellette 19, de manière à offrir une meilleure transmission de l'action de la tige 11 à une pièce 21', qui joue le rôle que la pièce 21, mais en offrant non plus deux positions extrêmes de blocage, mais quatre, grâce à quatre nervures 30 qui peuvent être mises en jeu selon l'angle de rotation de la couronne 8. De manière connue, un ressort 31 "soulage" la pièce 21' à chaque changement de nervure.FIG. 5 illustrates a variant of the mechanism for locking the inclination of the backrest. We find in this mechanism the
Comme indiqué ci-dessus, la description qui précède constitue un exemple d'illustration non limitatif d'un mode de réalisation de l'invention, et de nombreuses variantes peuvent en être conçues dans le cadre de l'invention. Ainsi, le satellite est représenté ici situé latéralement par rapport au siège : il pourrait aussi bien être situé en tout autre point, pour des raisons pratiques et/ou esthétiques.As indicated above, the foregoing description constitutes an example of a nonlimiting illustration of an embodiment of the invention, and numerous variants can be devised within the framework of the invention. Thus, the satellite is shown here located laterally with respect to the seat: it could as well be located at any other point, for practical and / or aesthetic reasons.
Ce satellite regroupe les commandes de trois réglages particuliers : il pourrait aussi bien regrouper un nombre différent de réglages également différents, selon les besoins de l'utilisateur. Il est donc bien entendu que l'invention ne saurait être limitée que par le cadre des revendications ci-après.This satellite combines the commands of three particular settings: it could as well group a different number of equally different settings, depending on the needs of the user. It is therefore understood that the invention can only be limited by the scope of the claims below.
Claims (6)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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ES96440031T ES2110859T3 (en) | 1996-04-22 | 1996-04-22 | IMPROVEMENT IN THE REGULATION AND CONTROL SYSTEMS OF THE VARIOUS MOBILE AND / OR DEFORMABLE ELEMENTS OF AN OFFICE CHAIR. |
DE69600110T DE69600110T2 (en) | 1996-04-22 | 1996-04-22 | Improvements to the adjustment and operating devices of moving and deformable parts of an office chair |
AT96440031T ATE160263T1 (en) | 1996-04-22 | 1996-04-22 | IMPROVEMENTS IN ADJUSTMENT AND OPERATING DEVICES OF MOVING AND DEFORMABLE PARTS OF AN OFFICE CHAIR |
EP96440031A EP0804888B1 (en) | 1996-04-22 | 1996-04-22 | Improvements in adjusting and control devices of moving and deformable parts in office chairs |
DK96440031T DK0804888T3 (en) | 1996-04-22 | 1996-04-22 | Improvements in the system for regulating and maneuvering various moving elements and / or deformable elements in e. |
US08/838,617 US5915788A (en) | 1996-04-22 | 1997-04-10 | Multi-function control for chair |
GR980400252T GR3026084T3 (en) | 1996-04-22 | 1998-02-05 | Improvements in adjusting and control devices of moving and deformable parts in office chairs |
US09/174,941 US6003943A (en) | 1996-04-22 | 1998-10-19 | Multi-function control for chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP96440031A EP0804888B1 (en) | 1996-04-22 | 1996-04-22 | Improvements in adjusting and control devices of moving and deformable parts in office chairs |
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EP0804888A1 true EP0804888A1 (en) | 1997-11-05 |
EP0804888B1 EP0804888B1 (en) | 1997-11-19 |
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EP96440031A Expired - Lifetime EP0804888B1 (en) | 1996-04-22 | 1996-04-22 | Improvements in adjusting and control devices of moving and deformable parts in office chairs |
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EP (1) | EP0804888B1 (en) |
AT (1) | ATE160263T1 (en) |
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DK (1) | DK0804888T3 (en) |
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AU2020224628A1 (en) | 2019-02-21 | 2021-08-26 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
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EP0385473A2 (en) * | 1989-03-01 | 1990-09-05 | Herman Miller, Inc. | Chair height and tilt adjustment mechanisms |
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US4373692A (en) * | 1980-05-01 | 1983-02-15 | Steelcase Inc. | Chair control with height adjustment actuator |
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US4595237A (en) * | 1984-05-11 | 1986-06-17 | Haworth, Inc. | Actuating control for seat height adjustment mechanism |
DE3616475C1 (en) * | 1986-05-15 | 1987-06-11 | Kusch Co Sitzmoebel | Height-adjustable swivel chair equipped with gas pressure spring, in particular office chair or armchair |
US4709963A (en) * | 1986-12-12 | 1987-12-01 | Milsco Manufacturing Company | Adjustable office chair |
JPH0440512Y2 (en) * | 1987-05-15 | 1992-09-22 | ||
US5222783A (en) * | 1991-12-02 | 1993-06-29 | Lai Soon L | Chair with its backrest adjustable in its angle |
US5427434A (en) * | 1993-07-30 | 1995-06-27 | Leggett & Platt, Incorporated | Chair tilt and height adjustment mechanism |
US5577807A (en) * | 1994-06-09 | 1996-11-26 | Steelcase Inc. | Adjustable chair actuator |
US5577804A (en) * | 1995-06-30 | 1996-11-26 | Global Upholstery Company | Seat height adjustment mechanism for a chair |
-
1996
- 1996-04-22 AT AT96440031T patent/ATE160263T1/en not_active IP Right Cessation
- 1996-04-22 DK DK96440031T patent/DK0804888T3/en active
- 1996-04-22 ES ES96440031T patent/ES2110859T3/en not_active Expired - Lifetime
- 1996-04-22 EP EP96440031A patent/EP0804888B1/en not_active Expired - Lifetime
- 1996-04-22 DE DE69600110T patent/DE69600110T2/en not_active Expired - Fee Related
-
1997
- 1997-04-10 US US08/838,617 patent/US5915788A/en not_active Expired - Lifetime
-
1998
- 1998-02-05 GR GR980400252T patent/GR3026084T3/en unknown
- 1998-10-19 US US09/174,941 patent/US6003943A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0385473A2 (en) * | 1989-03-01 | 1990-09-05 | Herman Miller, Inc. | Chair height and tilt adjustment mechanisms |
EP0592008A1 (en) * | 1989-03-01 | 1994-04-13 | Herman Miller, Inc. | Chair height and tilt adjustment mechanisms |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU641676B2 (en) * | 1989-07-25 | 1993-09-30 | Pharmacia & Upjohn Company | Antiarrhythmic tertiary amine-alkenyl-phenyl-alkanesulfonamides |
CN109625339A (en) * | 2018-12-29 | 2019-04-16 | 西北工业大学 | A kind of micro-nano satellite separator of controllable rotating angular speed |
Also Published As
Publication number | Publication date |
---|---|
US6003943A (en) | 1999-12-21 |
ES2110859T3 (en) | 1998-02-16 |
DK0804888T3 (en) | 1998-07-27 |
EP0804888B1 (en) | 1997-11-19 |
DE69600110D1 (en) | 1998-01-22 |
US5915788A (en) | 1999-06-29 |
DE69600110T2 (en) | 1998-06-04 |
ATE160263T1 (en) | 1997-12-15 |
GR3026084T3 (en) | 1998-05-29 |
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