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EP0863286A2 - Dispositif de fermeture de porte ou similaire - Google Patents

Dispositif de fermeture de porte ou similaire Download PDF

Info

Publication number
EP0863286A2
EP0863286A2 EP98101346A EP98101346A EP0863286A2 EP 0863286 A2 EP0863286 A2 EP 0863286A2 EP 98101346 A EP98101346 A EP 98101346A EP 98101346 A EP98101346 A EP 98101346A EP 0863286 A2 EP0863286 A2 EP 0863286A2
Authority
EP
European Patent Office
Prior art keywords
damping
wing
frame
piston
cylinder
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
Application number
EP98101346A
Other languages
German (de)
English (en)
Other versions
EP0863286A3 (fr
EP0863286B1 (fr
Inventor
Gerhard SCHRÖDER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gretsch Unitas GmbH
Gretsch Unitas GmbH Baubeschlaege
Original Assignee
Gretsch Unitas GmbH
Gretsch Unitas GmbH Baubeschlaege
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gretsch Unitas GmbH, Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH
Publication of EP0863286A2 publication Critical patent/EP0863286A2/fr
Publication of EP0863286A3 publication Critical patent/EP0863286A3/fr
Application granted granted Critical
Publication of EP0863286B1 publication Critical patent/EP0863286B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/108—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with piston rod protruding from the closer housing; Telescoping closers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the invention relates to a closer between a fixed frame as well as a pivotable wing of a door or the like, with a locking gear, which at least a drive slide, at least one control slide and at least a control lever, via which the drive and Control spools are in drive connection with each other, includes wherein the drive slide on the wing or on the frame in Direction of the wing or frame main level and one across to the wing or frame main plane Frame end face against the effect of a restoring force a starting position assigned to the closed position of the wing in an open position assigned to an open position of the wing is displaceable and the control slide on the wing or on the frame in the direction of the sash or main frame plane as well as displaceable transversely to the wing or frame end face guided and in the direction of displacement on the frame or on the wing is supported.
  • Such devices are found in the form of folding door closers Use. For example, for aesthetic reasons the components of the closer or the locking mechanism from the outside sunk invisibly into the sash or the fixed frame.
  • the present invention has overcome this disadvantage set the goal.
  • the stated object is achieved in that a closer of the type mentioned the control lever exclusively on the drive slide and on the control slide articulated and in this case only by one across the wing or the axis of the frame main plane is pivotable.
  • designed in the manner of a toggle lever Locking gear part is the number of for the storage of the Control lever or the control lever articulated points minimized; limits the type of storage selected for the control lever (s) focus on a pure swivel bearing.
  • the spool is slidably attached to the wing is supported on the frame in the direction of displacement. At is the movable bearing of the spool on the frame make appropriate support on the wing. In both Cases are supported on one of the pivot axes of the wing remote storage location made because only under this Prerequisite is a sliding movement with the pivoting movement of the wing of the control spool transverse to the wing or frame end face connected is. Because of the described storage conditions it also comes perpendicular to the wing or main frame level to a relative movement of the control spool parallel to itself opposite the point of its support the frame or the wing.
  • the closer according to the invention allows not only storage of the control lever but also the control lever itself is extremely simple to design. Characterized by a corresponding advantage an embodiment of the closer according to the invention, whose at least one control lever is tab-shaped.
  • a variant of the invention in the case of which the drive slide against the direction of its movement in the open position on the wing or can be supported on the frame and one that acts on it Restoring force generating and on the wing or on the Frame-supported closing spring is applied, for which a Actuator for adjusting the spring preload provided is characterized in that the adjusting device for Setting the spring preload with its axis in the direction of action the restoring force and around the mentioned Axis can be driven by a rotating spindle as well as a through it Rotating the adjusting spindle movable in the axial direction of the adjusting spindle Includes adjusting nut, the adjusting spindle on the drive slide and the adjusting nut on the support on the Wing or on the frame opposite side of the closing spring is supported.
  • the rotary drive of the adjusting spindle is a further development of the invention accomplished by means of a lockable bevel-helical gear, which is arranged coaxially with the adjusting spindle and first bevel spur gear rotatably connected to the adjusting spindle as well as a drive-connected second bevel spur gear, that around a transverse to the axis of the first bevel gear Axis rotatable from the wing or frame face forth is accessible for a drive device. Because of the described constructive features can be the relevant Actuating device in any case with the wing open with a few Operate handles. A manual setting is preferred, which is made possible in that the second bevel gear with a easily accessible intervention for a manual tool is provided.
  • the damping cylinder or the Damping piston is motionally connected to the drive slide and in the damping cylinder in the direction of the relative movement of Damping cylinder and damping piston on both sides of the damping piston when the drive slide moves in the direction of the starting position via at least one overflow channel for damping medium interconnectable cylinder spaces are provided, is the effective flow cross-section of the overflow channel adjustable.
  • the damping device ensures that the in Opening position pivoted wing under the effect of the the restoring force exerted is damped in Closing position is transferred.
  • the closing movement of the wing becomes damping medium, which in the cylinder space on the one side of the damping piston is due to the relative movement of damping cylinders and damping pistons through the overflow channel in the on the opposite side of the damping piston displaced cylinder space.
  • the mass flow of this Displacement determines the amount of speed at which the wing moves to the closed position.
  • the invention Adjustment of the effective flow cross section of the against this background, the overflow channel to influence the mass flow mentioned and thereby the The closing speed of the wing is tailored to the individual case Way to pretend.
  • the damping piston on the wing or on the frame at least a piston rod held on which at least part of the overflow channel for damping medium is provided and which is at least one in different shift positions Lockable valve rod can be moved relative to the piston rod is guided, the overflow channel being one of its effective Control surface or edge limiting flow cross section, against which the valve rod with a control counter surface or counter edge by sliding relative to the piston rod is deliverable.
  • the relative position can be compared to the piston rod the control surface or edge on the piston rod side and the valve rod side Tax counter surface or counter edge vary.
  • a change is associated with the change in relative position described the effective flow cross-section of the overflow channel.
  • valve stem compared to the piston rod is made possible in a development of the invention in that the Valve rod relative to an eccentric in the axial direction slidable to the piston rod on the wing or on the frame is supported.
  • a bypass channel for damping medium is provided, via which the cylinder spaces on both sides of the damping piston are connected when the damping piston relative to the damping cylinder a position of the drive slide close to the starting position assumes the assigned position.
  • One embodiment features manufacturing advantages of the closer according to the invention, on which the Bypass channel from a radial extension to that of the damping piston facing inner wall of the damping cylinder is formed, whose extension in the axial direction of the damping cylinder corresponding extension of the damping piston exceeds.
  • a Bypass channel of this type can be inserted into the inner wall with little effort of the damping cylinder.
  • the cross section of the bypass channel via which damping medium during the final closing movement of the leaf from one cylinder space to the other, on the opposite Side of the damping piston arranged cylinder chamber displaced will be constant.
  • the cross section of the closer according to the invention increases the radial extension on the inner wall of the damping cylinder in the direction of the movement of the drive slide direction of movement of the damping piston assigned to its starting position relative to the damping cylinder. This gives a progressive in the final phase of the wing closing movement Closing speed course.
  • the damping piston and the damping cylinder is adjustable relative to one another in the axial direction, as is also possible according to the invention, so can be the size of the at such an adjustment Closing movement of the wing remaining opening angle, at which the acceleration of the closing movement begins.
  • the bypass connection between those on both sides of the damping piston Cylinder rooms with larger or smaller ones Rested opening angle of the wing is the described Possibility to set the wing acceleration time regardless of whether the bypass channel is a constant or has a changing cross-section.
  • Is considered Bypass channel a radial provided with a variable cross section Extension used on the inner wall of the damping cylinder, as described above, so the set Relative position of the damping piston and damping cylinder also on the attainable final wing speed.
  • the setting of the damping piston compared to the Damping cylinder is at the time the wing closes a more or less large Bvpasskanal cross section to displace of the damping medium.
  • the axial setting of the damping piston can be average against the damping cylinder if - as in the case a preferred embodiment of the invention provided - the Damping piston relative to the at least one piston rod Damping cylinder adjustable in the axial direction and in the ingested Position definable supported on the wing or on the frame is.
  • the illustrations relate to a folding door closer 1, which is between a fixed frame 2 and an attached to it about a pivot axis 3 pivotally mounted wing 4 is arranged.
  • the rebate door closer is 1 primarily for aesthetic reasons in a perpendicular to of the wing main plane extending wing face 5 sunk.
  • the fixed frame 2 is a frame insert 6 in shape screwed of a bearing block.
  • a housing 7 of the folding door closer 1 consists essentially of two housing parts running at right angles to each other, whereby the horizontal housing part of a guide bracket 8 and that vertical part of the housing with a screw-on plate 9 the wing 4 connected housing box 10 is formed.
  • a control slide 13 vertically displaceable to the wing end face 5 in the direction of a double arrow 14 guided.
  • the Control spool 13 projecting transversely to the direction of displacement 14
  • the leadership approaches 15 will formed by the free ends of two in the spool 13 fitted notch pins.
  • To incorporate leadership approaches 15 serve in the direction of displacement 14 of the control slide 13 extending guide slots 16 on the legs 11, 12 of the guide bracket 8.
  • a connecting arm 17 is articulated via which of the spool 13 with the frame insert 6 on the fixed Frame 2 is connected.
  • the Connecting arm 17 around a running in the direction of the main wing plane Axis 18, on the frame insert 6 by one to the axis 18 parallel axis 19 pivotally mounted.
  • the runs Axis 19 laterally offset from the pivot axis 3 of the wing 4.
  • Control lever 20 On the side of the control slide facing away from the wing end face 5 13 are two tab-like arranged parallel to each other Control lever 20 about a perpendicular to the main wing plane extending axis 21 pivotally articulated. With their opposite The ends of the control levers 20 are also perpendicular axis 22 aligned with the main wing plane mounted on a drive slide 23.
  • the drive slide 23 is in the housing box 10 in the direction of a double arrow 24 slidably guided.
  • the drive slide takes place in appropriately designed recesses 23 a first bevel gear 25 and a meshing one second bevel gear 26.
  • the first bevel gear 25 is coaxial arranged with an adjusting spindle 27 and with the latter Rotation riveted about an axis of rotation 28 in a rotationally fixed manner.
  • the second bevel gear 26 is about a perpendicular to the axis of rotation 28 Rotation axis 29 rotatably mounted on the drive slide 23 and with an internal hexagon 30 as an engagement for a corresponding one Provide operating tool.
  • the adjusting spindle 27 engages in the internal thread an adjusting nut 31, which is designed as an adjusting plate and against rotation with the adjusting spindle 27 about the axis of rotation 28 and on the adjusting spindle 27 in the direction of the double arrow 24 is slidably held in the housing box 10.
  • the adjusting nut 31 On its underside, the adjusting nut 31 supports a helical compression spring trained and in their starting position according to FIG. 2 preloaded closing spring 32. On its opposite the adjusting nut 31 The closing spring 32 is at two ends parallel to one another arranged rivet pins 33 supported, of which in the Figures 2 and 4, only one is recognizable and which over the Housing box 10 are connected to the wing 4. Over a hole 34 of the screw-on plate 9 is the inside of the housing box 10 accessible.
  • the closing spring 32 surrounds a coaxially aligned with it Damping cylinder 35, which, like one relative inside it guided to it in the direction of the double arrow 24 Damping piston 36 is an integral part of a damping device for the drive slide 23. At his the drive slide 23 facing end is the damping cylinder 35 with a Approach of the adjusting spindle 27 firmly connected.
  • the damping cylinder 35 is with closed a cylinder cover 37.
  • the latter is with one in the Cross-section circular passage for a piston rod 38 provided, via which the damping piston 36 on an adjusting bracket 39 supports.
  • the piston rod 38 is with a Thread end in a threaded bore 43 also shown in FIG. 6 of the Adjusting block 39 screwed in.
  • the adjustment bracket 39 is inside of the housing box 10 in the direction of the double arrow 24 can be implemented and in the position taken by means of a clamping screw 41 fixable, which the screw-on plate 9 of the housing box 10 at an elongated hole 42 running in the direction of the piston rod 38 interspersed and with its external thread in a threaded bore 40th of the adjustment bracket 39 engages (including Fig. 6a).
  • FIGS. 5a and 5b show in an enlarged view, is into the inner wall of the damping cylinder 35 near the cylinder cover 37 incorporated a radial extension 44, which the shape one towards the lower end of the damping cylinder 35 wedge-shaped recessed groove.
  • the damping piston 36 is provided in its interior with passages 45, through which a cylinder space 46 formed on one side of the damping piston 36 with a cylinder space 47 on the opposite side of the Damping piston 36 is connectable.
  • a Seeger ring vented valve ring 48 is on the piston rod 38 a in the axial direction of the piston rod 38 and on the side facing away from the damping piston 36 by means of a Seeger ring vented valve ring 48 attached.
  • Piston rod 38 is provided with an external thread.
  • External thread is the relevant piston rod end in a corresponding Internal thread of the damping piston 36 screwed.
  • the piston rod 38 is with the formation of a free inner cross section hollow and takes a concentric inside with it arranged valve rod 49.
  • the latter owns a graduated outer diameter, with a section 50 smaller Diameter ends in a conical tip 51.
  • annular space 52 Between the inner wall of the piston rod 38 and the outer wall of the section 50 of the valve rod 49 remains an annular space 52.
  • the annular space 52 includes the cylinder space 47 Annular gap 54, which between a conical surface 55 of the conical Tip 51 of the valve rod 49 and one of these opposite Counter surface 56 remains on the damping piston 36. Of the Annular gap 54 finally widens into one in the cylinder space 47 opening inner cone 57 of the damping piston 36.
  • the cylinder spaces 46 and 47 contain damping medium, as shown Case hydraulic oil.
  • the wall bore 53, the annular space 52, the annular gap 54 and the inner cone 57 of the damping piston 36 form a connecting the cylinder spaces 46, 47 together Xerström Canal, its effective flow cross-section in the area of the annular gap 54 through the conical surface 55 of the valve rod 49 and the opposite surface 56 of the damping piston opposite this 36 is limited.
  • the counter surface 56 on the damping piston 36 serves as a control surface, the conical surface 55 on the Valve rod 49 as a control counter surface, the conical surface 55 by moving the valve rod 49 relative to the piston rod 38 deliverable in the axial direction relative to the counter surface 56 is.
  • the translational movement of the spool 13 across the Wing face 5 is on the control lever 20 on the drive slide 23 transferred and causes its relocation in Inside the housing box 10 in the direction of an arrow 24a parallel to the wing end face 5.
  • Precondition for the described Kinematics is the presence of more than 0 ° and less than 90 ° angle ⁇ between the direction of movement 14a of the Control spool 13 and the connecting path of the axes 21 and 22 the control lever 20 when the wing 4 is in the closed position.
  • damping cylinder 35 and damping piston 36 As a result of this relative movement of damping cylinder 35 and damping piston 36 is in the Cylinder chamber 47 of the damping cylinder 35 present damping medium through the passages 45 of the damping piston 36 and through the overflow channel, which from the inner cone 57 of the damping piston 36, the annular gap 54, the annular space 52 and the wall bore 53 of the piston rod 38 is formed in the cylinder chamber 46 of the Damping cylinder 35 displaced.
  • the damping medium a relatively large flow cross-section is available, so that the displacement movement of the damping cylinder 35 in the direction of movement 24a in this respect at most a low hydraulic one Resistance is opposed.
  • a restoring force is applied to the drive slide 23 Closing spring 32 exercised. This is from the drive slide 23rd via the adjusting spindle supported on the drive slide 23 27 seated adjusting nut 31 acted upon. after the Closing spring 32 on the drive slide 23 opposite it End fixed wing, namely on the rivets 33, stored is, this is applied by the drive slide 23 a feather compression. Since the closing spring 32 is a The spring is dealing with a progressive characteristic curve, the amount of from the closing spring 32 to the drive slide 23 at the Movement in the direction of arrow 24a exerted reaction force the amount of said movement of the drive slide 23. As a result, when opening the wing 4 itself a counterforce increasing with the wing opening angle to overcome.
  • the opening force profile can be increased by the toggle-type Coupling of the control slide 13, the control lever 20 and the Drive slide 23 can be avoided. So shrinks down acute angle ⁇ between the axis of movement of the drive slide 23 and the connecting path of the axes 21, 22 of the control levers 20 with increasing door opening angle.
  • the known Force ratios on toggle lever gearboxes is with the reduction of the angle ⁇ an increase in the amount of in Axial direction of the movement of the drive slide 23 acting component the force applied by the user of the door.
  • the damping cylinder 35 Carried by the drive slide 23 in the direction of movement 24b is the damping cylinder 35, which is accordingly opposite the wing-fixed damping piston 36 in a corresponding axial Shifts direction.
  • the cylinder space 46 of the damping cylinder 35 damping medium present in the cylinder space 47 of the damping cylinder 35 displaced.
  • the damping medium is only the Overflow channel, consisting of the wall bore 53 of the piston rod 38, the annular space 52, the annular gap 54 and the inner cone 57 of the Damping piston 36 available.
  • the mouths of the culverts 45 of the damping piston 36 in the cylinder chamber 46 are - what in 5a and 5b is not shown - by the valve ring 48 locked.
  • the extent of the resulting damping of the return movement of the Drive slide 23 can be adjusted by axially adjusting the Valve rod 49 arranged inside the hollow piston rod 38 vary.
  • the Valve rod 49 arranged inside the hollow piston rod 38 vary.
  • the valve rod 49 is actuated by turning the eccentric 59 in the axial direction of the piston rod 38 relative to this postponed.
  • the wing 4 actuated by the closing spring 32, approaches it Starting closed position, the damping piston 36 enters the Area of radial extension 44 on the inner wall of the damping cylinder 35. Because the axial extension of the radial extension 44 of the damping cylinder 35 is greater than the axial extent of the damping piston 36, can between the cylinder spaces 46, 47 of the damping cylinder 35 via the radial extension 44 of the damping cylinder 35 a bypassing the damping piston 36 Bypass connection will be made as soon as the axial start the radial extension 44 on the inner wall of the damping cylinder 35 the upper end face of the damping piston in the figures 36 has passed in the direction of arrow 24b.
  • the closing end movement of the leaf 4, referred to as the "door slam” can be compared by axially adjusting the damping piston 36 affect the damping cylinder 35. So determines the axial Basic setting of damping piston 36 and damping cylinder 35 on the one hand, at which opening angle of the wing 4 the bypass connection between the cylinder spaces 46, 47 of the damping cylinder 35 is produced via its radial extension 44.
  • the adjustment of the axial relative position of damping pistons 36 and Damping cylinder 35 is accomplished by moving the adjustment bracket 39.
  • the adjustment bracket 39 For this purpose, given a relative arrangement of damping piston 36 and damping cylinder 35 first the Loosen the clamping screw 41 from the wing end face 5. Subsequently can the clamping screw 41 in the slot 42 of the Screw-on plate 9 with the adjusting bracket 39 held on it move vertically and in the desired position again fix by clamping. With the displacement of the adjustment bracket 39 a corresponding displacement of the piston rod is connected 38 on the adjusting bracket 39 held damping piston 36 inside the damping cylinder 35.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Special Wing (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP98101346A 1997-03-06 1998-01-27 Dispositif de fermeture de porte ou similaire Expired - Lifetime EP0863286B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29704103U 1997-03-06
DE29704103U DE29704103U1 (de) 1997-03-06 1997-03-06 Schließer an einer Tür o.dgl.

Publications (3)

Publication Number Publication Date
EP0863286A2 true EP0863286A2 (fr) 1998-09-09
EP0863286A3 EP0863286A3 (fr) 2001-05-02
EP0863286B1 EP0863286B1 (fr) 2004-03-31

Family

ID=8037074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101346A Expired - Lifetime EP0863286B1 (fr) 1997-03-06 1998-01-27 Dispositif de fermeture de porte ou similaire

Country Status (2)

Country Link
EP (1) EP0863286B1 (fr)
DE (2) DE29704103U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9995076B1 (en) 2001-07-13 2018-06-12 Steven M. Hoffberg Intelligent door restraint

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9904845D0 (en) 1999-03-04 1999-04-28 Heath Samuel & Sons Plc Door closers
DE102006002952B4 (de) * 2006-01-21 2008-10-16 Zimmer, Günther Türzuziehgarnitur für Drehtüren
ES2621795T3 (es) 2010-12-11 2017-07-05 Hautau Gmbh Herraje fácil de utilizar y procedimiento para una ventana de deslizamiento paralelo (rebatible)
DE102011000164B3 (de) * 2011-01-16 2012-03-22 Hautau Gmbh Beschlag für parallel verschiebebaren Flügel
DE202016001398U1 (de) 2016-03-04 2016-03-24 Siegenia-Aubi Kg Fenster oder Tür

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE733389C (de) * 1938-08-27 1943-03-25 Wilhelm Auspurg Verdeckt eingebauter Tuerschliesser mit Gestaengeantrieb aus dem Tuerfalz
US3335451A (en) * 1965-04-23 1967-08-15 Independent Lock Co Linear acting door closer
FR2566827A1 (fr) * 1984-06-28 1986-01-03 Houdaille Lelaurain Sa Ferme-porte a freinage hydraulique du type dit invisible

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE733389C (de) * 1938-08-27 1943-03-25 Wilhelm Auspurg Verdeckt eingebauter Tuerschliesser mit Gestaengeantrieb aus dem Tuerfalz
US3335451A (en) * 1965-04-23 1967-08-15 Independent Lock Co Linear acting door closer
FR2566827A1 (fr) * 1984-06-28 1986-01-03 Houdaille Lelaurain Sa Ferme-porte a freinage hydraulique du type dit invisible

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9995076B1 (en) 2001-07-13 2018-06-12 Steven M. Hoffberg Intelligent door restraint

Also Published As

Publication number Publication date
EP0863286A3 (fr) 2001-05-02
DE59811074D1 (de) 2004-05-06
DE29704103U1 (de) 1998-07-02
EP0863286B1 (fr) 2004-03-31

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