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US3335248A - Threepole-switch for wall mounting with contact dampening means - Google Patents

Threepole-switch for wall mounting with contact dampening means Download PDF

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Publication number
US3335248A
US3335248A US540380A US54038066A US3335248A US 3335248 A US3335248 A US 3335248A US 540380 A US540380 A US 540380A US 54038066 A US54038066 A US 54038066A US 3335248 A US3335248 A US 3335248A
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United States
Prior art keywords
lever
switch
housing
contact
threepole
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US540380A
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Bassani Ermanno
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/12—Distribution boxes; Connection or junction boxes for flush mounting
    • H02G3/123—Distribution boxes; Connection or junction boxes for flush mounting in thin walls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/24—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with two operating positions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/044—Mounting through openings

Definitions

  • a switch for wall mounting comprising a housing, at least one fixed contact, at least one movable contact in the housing movable in and out of engagement with the fixed contact and provided with dampening means to prevent rebounding of the movable contact during engagement with the fixed contact.
  • This invention relates to a threepole-switch conceived, built and sized so as to be set on a small frame to be placed under the wall plaster, in substitution for, or in combination with other such electric devices new or already used in the same manner, as, f.i., unipolar-switches, bells, sockets and the like.
  • the object of this invention is to obtain a threepoleswitch especially adapted for supporting electric powers up to four and five kw., of reduced size, so as to be set into a wall, with the system comprising other such electric devices.
  • a further object of this invention is to provide a threepole-switch of the aforesaid kind suitable for large series manufacturing at low cost, whereby the switch although of reduced size, it is in condition to ensure a quick opening and closing of its contacts, without any rebounding so as to assure a long life of the threepole-switch.
  • the threepole-switch comprises an external casing of such size so that it may be mounted along side of further electric devices and set-up together with them onto a supporting frame for their enclosing into a wall.
  • a further characteristic of this invention is that the mobile contacts are supported by elastic, arcuated blades for conducting the electric current, and fastened to small levers, whereon an insulating member is due to act with the help of appropriate compression springs after it has acquired a certain speed, thus ensuring a clear and rapid opening of the contacts, and consenting to the closing of the contacts, due to the action of said springs, together with the elastic contact holders, they compose an elastic damping system which impedes any rebounding of the mobile contacts, when they connect with the fixed contacts.
  • Still a further characteristic of the invention is that the fixed contacts which are located adjacent each other are separated from one another by appropriate electrically insulating walls.
  • Another characteristic is that in the rear portion of the casing of the threepole-switch, there are provided, on opposed rows, the terminals for the connection of the electric conductors, said terminals being separated and protected by insulating walls.
  • FIGURE 1 shows the threepole-switch with a small supporting frame, whereon it is set up
  • FIGURES 2 and 3 represent partially in cross section, the disposition and the movement of the mobile contacts
  • FIGURE 4 represents in perspective view the threepoleswitch
  • FIGURE 5 is a perspective view of the threepole-switch in combination with other electric devices to be enclosed within a wall;
  • FIGURE 6 shows the setting-up of the threepole-switch on a supporting frame for the disposition of a unique device.
  • the switch according to the invention is constituted by a casing 1 having a rectangular cross section, presenting a front lever 2 for control purpose, projecting from said casing and being surrounded by a fastening band 3 connected to said casing by means of clasping means 4 encompassing projections 5 protruding from said casing.
  • Said clasping band 3 is provided at its upper and lower portions with small tongues 6 and 7, by means of which it is fastened on a small supporting frame 8 of known kind, to support electric devices of various nature.
  • Said small frame shows one or more small windows or apertures 9 set next to each other.
  • each aperture 9 there is provided a lower split 10, wherein tongue 7 is introduced, and an upper split 11, wherein tongue 6 is fitted and locked by means a wedge like tongue 12 conveniently bent by means of an appropriate tool. Fastening of said clasping band 3 in the said manner will result that lever 2 projects through the aperture 9 and from the window of a plate 13 (FIGURES l and 5), which has so many small windows as said small frame and coinciding with the windows of the latter.
  • the represented devices are (FIGURE 5) a bell contact 14, a simple electric switch 15 and a socket 16, to which a small plug 17 is connected.
  • lever 2 instantly displaces either to the one -or the other direction a rigid member 18 by means of a catch per se known.
  • the member 18 has the function to move the movable contacts of the threepole-switch, only two of which are visible on the drawing.
  • These movable contacts 19 are supported by elastic arcuated blades 20, respectively integral with small levers 21 fulcrumed at 22, and provided at their upper portions with projections to interfere with the aforesaid member 18.
  • the opening and closing of the threepole-switch will be thus free of any sparking which could provoke welding or destroying of the contacts in short time.
  • the fixed contacts are respectively separated by electrically insulating walls 26, which protect the contacts against the formation of electric arcs, in particular during the opening step.
  • the fixed contacts and the movable contacts are connected to terminals 27', 28, respectively, to which the electric Wires are attached. Said terminals are separated from each other by means of separating walls 29, whereby said contacts are electrically and mechanically insulated.
  • FIGURE 6 illustrates how a threepole-switch can be installed as single device.
  • the small frame 30 used will receive the form as shown in FIGURE 6, that is with a single window or aperture for the passage of lever 2, and with means for fastening to said small frame 30 by means of a plate or cover of adequate sizes.
  • Said small frame is also manufactured with slits 10, 11 for the insertion of the small tongues 6, 7, respectively.
  • a switch comprising, in combination, a housing; at least one fixed contact in said housing; at least one movable contact means in said housing and comprising a lever pivotally mounted at one end in said housing, an arcuate blade integrally connected at one end to said lever inter mediate the ends of the latter and projecting therefrom towards said fixed contact, and a contact portion fixed to the other end of said blade, said lever being turnable between an open position in which said contact portion is spaced from said fixed contact and a closed position in which said contact portion engages said fixed contact; biasing means cooperating with said lever and being biassed so as to tend to move the latter to said closed position; and operating means extending from the exterior of the housing into the latter and including a member cooperating with the other end of said lever and being movable from an active position engaging said other end of said lever to move the latter against the force of said biasing means to said open position, and an inactive position spaced from said other end of said lever so that 4 the latter will rapidly move under the influence of said biasing means to said closed position, where
  • said biasing means comprises a compression spring.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Aug. 8, 1967 E. BASSANI 3,335,248 THREEPOLE-SWITCH FOR WALL MOUNTING WITH CONTACT DAMPENING MEANS Filed April 5, 1966 2 Sheets-Sheet l E. BASSANI SWI Aug. 8, 1967 THREEPOLE TCH FOR WALL MOUNTING WITH CONTACT DAMPENING MEANS 2 Sheets-Shem Filed April 5, 1966 INVENTOR.
/71; .4 m7 0 ,3 Qf 3:2 1:
United States Patent 3,335,248 THREEPOLE-SWITCH FOR WALL MOUNTING WITH CONTACT DAMPENING MEANS Ermanno Bassani, Corso di Porta Vittoria 9, Milan, Italy Filed Apr. 5, 1966, Ser. No. 540,380
Claims priority, application Italy, Apr. 12, 1965, 8,138/65 6 Claims. (Cl. 200-166) ABSTRACT OF THE DISCLOSURE A switch for wall mounting comprising a housing, at least one fixed contact, at least one movable contact in the housing movable in and out of engagement with the fixed contact and provided with dampening means to prevent rebounding of the movable contact during engagement with the fixed contact.
This invention relates to a threepole-switch conceived, built and sized so as to be set on a small frame to be placed under the wall plaster, in substitution for, or in combination with other such electric devices new or already used in the same manner, as, f.i., unipolar-switches, bells, sockets and the like.
The object of this invention is to obtain a threepoleswitch especially adapted for supporting electric powers up to four and five kw., of reduced size, so as to be set into a wall, with the system comprising other such electric devices.
A further object of this invention is to provide a threepole-switch of the aforesaid kind suitable for large series manufacturing at low cost, whereby the switch although of reduced size, it is in condition to ensure a quick opening and closing of its contacts, without any rebounding so as to assure a long life of the threepole-switch.
According to the invention, the threepole-switch comprises an external casing of such size so that it may be mounted along side of further electric devices and set-up together with them onto a supporting frame for their enclosing into a wall.
A further characteristic of this invention is that the mobile contacts are supported by elastic, arcuated blades for conducting the electric current, and fastened to small levers, whereon an insulating member is due to act with the help of appropriate compression springs after it has acquired a certain speed, thus ensuring a clear and rapid opening of the contacts, and consenting to the closing of the contacts, due to the action of said springs, together with the elastic contact holders, they compose an elastic damping system which impedes any rebounding of the mobile contacts, when they connect with the fixed contacts.
Still a further characteristic of the invention is that the fixed contacts which are located adjacent each other are separated from one another by appropriate electrically insulating walls.
Another characteristic is that in the rear portion of the casing of the threepole-switch, there are provided, on opposed rows, the terminals for the connection of the electric conductors, said terminals being separated and protected by insulating walls.
An embodiment of a switch according to the invention is shown by way of a non limiting example on the herewith attached drawings and described hereinunder, as follows.
Of said drawings:
FIGURE 1 shows the threepole-switch with a small supporting frame, whereon it is set up;
FIGURES 2 and 3 represent partially in cross section, the disposition and the movement of the mobile contacts;
FIGURE 4 represents in perspective view the threepoleswitch;
FIGURE 5 is a perspective view of the threepole-switch in combination with other electric devices to be enclosed within a wall; and
FIGURE 6 shows the setting-up of the threepole-switch on a supporting frame for the disposition of a unique device.
In FIGURE 1, the switch according to the invention is constituted by a casing 1 having a rectangular cross section, presenting a front lever 2 for control purpose, projecting from said casing and being surrounded by a fastening band 3 connected to said casing by means of clasping means 4 encompassing projections 5 protruding from said casing. Said clasping band 3 is provided at its upper and lower portions with small tongues 6 and 7, by means of which it is fastened on a small supporting frame 8 of known kind, to support electric devices of various nature. Said small frame shows one or more small windows or apertures 9 set next to each other.
In correspondence of each aperture 9 there is provided a lower split 10, wherein tongue 7 is introduced, and an upper split 11, wherein tongue 6 is fitted and locked by means a wedge like tongue 12 conveniently bent by means of an appropriate tool. Fastening of said clasping band 3 in the said manner will result that lever 2 projects through the aperture 9 and from the window of a plate 13 (FIGURES l and 5), which has so many small windows as said small frame and coinciding with the windows of the latter.
Within the remaining windows of said small frame there may be placed further devices to complete the desired combination of controls.
In the example of embodiment shown, the represented devices are (FIGURE 5) a bell contact 14, a simple electric switch 15 and a socket 16, to which a small plug 17 is connected.
As shown in FIGURES 2 and 3, lever 2 instantly displaces either to the one -or the other direction a rigid member 18 by means of a catch per se known. The member 18 has the function to move the movable contacts of the threepole-switch, only two of which are visible on the drawing. These movable contacts 19 are supported by elastic arcuated blades 20, respectively integral with small levers 21 fulcrumed at 22, and provided at their upper portions with projections to interfere with the aforesaid member 18.
As shown in FIGURE 2, when contacts 19 are contacting with the fixed contacts 24, the member 18 is remote from said projections 23. Thus, when lever 2 is actuated for the opening of the threepole-switch, the member 18 will acquire a certain speed before it engages proso as to displace the latter with considerable quick opening of the movable contacts, against the force of springs 25 acting on levers 21.
When lever 2 is actuated for the closure of the threepole-switch as per this invention, the member 18 will be rapidly displaced, under the action of springs 25, so that the latter can turn said levers until contacts 19 will engage with contacts 24. The elastic blades 20 form together with said springs 25 a damping system to avoid any rebounding of the movable contacts from the fixed confacts.
The opening and closing of the threepole-switch will be thus free of any sparking which could provoke welding or destroying of the contacts in short time.
As it may be observed from FIGURES 2 and 3, the fixed contacts are respectively separated by electrically insulating walls 26, which protect the contacts against the formation of electric arcs, in particular during the opening step.
As shown in FIGURES 2, 3 and 4, the fixed contacts and the movable contacts are connected to terminals 27', 28, respectively, to which the electric Wires are attached. Said terminals are separated from each other by means of separating walls 29, whereby said contacts are electrically and mechanically insulated.
FIGURE 6 illustrates how a threepole-switch can be installed as single device. In this case, the small frame 30 used will receive the form as shown in FIGURE 6, that is with a single window or aperture for the passage of lever 2, and with means for fastening to said small frame 30 by means of a plate or cover of adequate sizes. Said small frame is also manufactured with slits 10, 11 for the insertion of the small tongues 6, 7, respectively.
Of course the invention may be realized in various forms differing from that described in the specification and illustrated without departing in any way from the spirit of the invention.
What is claimed is:
1. A switch comprising, in combination, a housing; at least one fixed contact in said housing; at least one movable contact means in said housing and comprising a lever pivotally mounted at one end in said housing, an arcuate blade integrally connected at one end to said lever inter mediate the ends of the latter and projecting therefrom towards said fixed contact, and a contact portion fixed to the other end of said blade, said lever being turnable between an open position in which said contact portion is spaced from said fixed contact and a closed position in which said contact portion engages said fixed contact; biasing means cooperating with said lever and being biassed so as to tend to move the latter to said closed position; and operating means extending from the exterior of the housing into the latter and including a member cooperating with the other end of said lever and being movable from an active position engaging said other end of said lever to move the latter against the force of said biasing means to said open position, and an inactive position spaced from said other end of said lever so that 4 the latter will rapidly move under the influence of said biasing means to said closed position, whereby said arcuate blade will prevent rebounding of said contact portion from said fixed contact after engagement with the latter.
2. A switch as defined in claim 1, wherein said biasing means comprises a compression spring.
3. A switch as defined in claim 1, and including at least one pair of terminals respectively connected to said fixed contact and to said lever and extending to the outside of said housing.
4. A switch as defined in claim 1, wherein said housing has an open end, and including a cover fixed to said housing at said open end, said cover being formed with an aperture therethrough through which said operating means projects, and means on said cover for connecting the same to a wall frame.
5. A switch as defined in claim 1, wherein said switch includes three fixed contacts spaced from each other, and three movable contacts respectively cooperating with said fixed contacts and biasing means for each of said movable contacts; and including separating walls respectively extending between said fixed contacts and between said movable contacts.
6. A switch as defined in claim 5, and including a terminal for each of said contacts, the terminals for the fixed contacts being arranged in one row at one side of said housing and the terminals for said movable contacts being arranged in another row at the other side of said housing, and separating walls between the terminals of each row.
References Cited UNITED STATES PATENTS 2,788,869 1/1957 Bentley 174-53 2,969,418 1/1961 Benander 174-53 3,172,972 3/1965 Schleicher 200166 FOREIGN PATENTS 1,274,117 9/1961 'France.
ROBERT K. SCHAEFER, Primary Examiner.
H. O, JONES, Assistant Examiner,

Claims (1)

1. A SWITCH COMPRISING, IN COMBINATION, A HOUSING; AT LEAST ONE FIXED CONTACT IN SAID HOUSING; AT LEAST ONE MOVABLE CONTACT MEANS IN SAID HOUSING AND COMPRISING A LEVER PIVOTALLY MOUNTED AT ONE END IN SAID HOUSING, AN ARCUATE BLADE INTEGRALLY CONNECTED AT ONE END TO SAID LEVER INTERMEDIATE THE ENDS OF THE LATTER AND PROJECTING THEREFROM TOWARDS SAID FIXED CONTACT, AND A CONTACT PORTION FIXED TO THE OTHER END OF SAID BLADE, SAID LEVER BEING TURNABLE BETWEEN AN OPEN POSITION IN WHICH SAID CONTACT PORTION IS SPACED FROM SAID FIXED CONTACT AND A CLOSED POSITION IN WHICH SAID CONTACT PORTION ENGAGES SAID FIXED CONTACT; BIASING MEANS COOPERATING WITH SAID LEVER AND BEING BIASSED SO AS TO TEND TO MOVE THE LATTER TO SAID CLOSED POSITION; AND OPERATING MEANS EXTENDING FROM THE EXTERIOR OF THE HOUSING INTO THE LATTER AND INCLUDING A MEMBER COOPERATING WITH THE OTHER END OF SAID LEVER AND BEING MOVABLE FROM AN ACTIVE POSITION ENGAGING SAID OTHER END OF SAID LEVER TO MOVE THE LATTER AGAINST THE FORCE OF SAID BIASING MEANS TO SAID OPEN POSITION, AND AN INACTIVE POSITION SPACED FROM SAID OTHER END OF SAID LEVER SO THAT THE LATTER WILL RAPIDLY MOVE UNDER THE INFLUENCE OF SAID BIASING MEANS TO SAID CLOSED POSITION, WHEREBY SAID ARCUATE BLADE WILL PREVENT REBOUNDING OF SAID CONTACT PORTION FROM SAID FIXED CONTACT AFTER ENGAGEMENT WITH THE LATTER.
US540380A 1965-04-12 1966-04-05 Threepole-switch for wall mounting with contact dampening means Expired - Lifetime US3335248A (en)

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IT813865 1965-04-12

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US (1) US3335248A (en)
BE (1) BE679038A (en)
ES (1) ES325372A1 (en)
FR (1) FR1515834A (en)
GB (1) GB1127526A (en)
NL (1) NL6604845A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471670A (en) * 1967-12-26 1969-10-07 Slater Electric Inc Electrical switch
US3562468A (en) * 1968-10-30 1971-02-09 Gen Electric Switch mounting means
US3670118A (en) * 1969-01-17 1972-06-13 Lucas Industries Ltd Windscreen wiper motors
US3699236A (en) * 1970-05-20 1972-10-17 Nihon Kaiheiki Ind Co Ltd Switch flourish plate
US3964705A (en) * 1970-12-23 1976-06-22 Bassani S.P.A. Frame for the mounting of interchangeable electrical units
US5457286A (en) * 1991-12-13 1995-10-10 Flasz; Igor Face plate assembly for electrical receptacle
EP0750371A2 (en) * 1995-06-22 1996-12-27 Panduit Corporation Connector mounting receptacles
US20060237616A1 (en) * 2005-04-11 2006-10-26 Tyco Electronic Corporation Switch package assembly with mounting base adapter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2132820B1 (en) * 1971-04-10 1976-08-06 Bassani Spa
DE3139701C2 (en) * 1981-10-06 1985-02-14 Sds-Elektro Gmbh, 8024 Deisenhofen Switch with a switch housing and a fastening device for the switch housing
GB2134723B (en) * 1983-02-07 1986-09-03 Lee Long River Mounting push-in electricity supply devices
GB9300338D0 (en) * 1993-01-09 1993-03-03 Mk Electric Ltd Mounting electrical accessories
GB2328316B (en) * 1997-08-12 2001-09-12 Otter Controls Ltd Improvements relating to thermal controls for electric heating elements
GB2351845A (en) * 1999-07-07 2001-01-10 Schneider Electric Ltd Mounting of circuit breaking devices

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788869A (en) * 1955-01-21 1957-04-16 Chicago Railway Equipment Co Railway brake gear safety structure
US2969418A (en) * 1958-03-03 1961-01-24 Gen Electric Interchangeable wiring devices
FR1274117A (en) * 1960-11-22 1961-10-20 Bassani Spa Clearance-free clamping devices for fixing interchangeable electrical wall devices to the support frames
US3172972A (en) * 1963-05-02 1965-03-09 Arrow Hart & Hegeman Electric Snap-action electrical switch with contact dampening means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788869A (en) * 1955-01-21 1957-04-16 Chicago Railway Equipment Co Railway brake gear safety structure
US2969418A (en) * 1958-03-03 1961-01-24 Gen Electric Interchangeable wiring devices
FR1274117A (en) * 1960-11-22 1961-10-20 Bassani Spa Clearance-free clamping devices for fixing interchangeable electrical wall devices to the support frames
US3172972A (en) * 1963-05-02 1965-03-09 Arrow Hart & Hegeman Electric Snap-action electrical switch with contact dampening means

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471670A (en) * 1967-12-26 1969-10-07 Slater Electric Inc Electrical switch
US3562468A (en) * 1968-10-30 1971-02-09 Gen Electric Switch mounting means
US3670118A (en) * 1969-01-17 1972-06-13 Lucas Industries Ltd Windscreen wiper motors
US3699236A (en) * 1970-05-20 1972-10-17 Nihon Kaiheiki Ind Co Ltd Switch flourish plate
US3964705A (en) * 1970-12-23 1976-06-22 Bassani S.P.A. Frame for the mounting of interchangeable electrical units
US5457286A (en) * 1991-12-13 1995-10-10 Flasz; Igor Face plate assembly for electrical receptacle
EP0750371A2 (en) * 1995-06-22 1996-12-27 Panduit Corporation Connector mounting receptacles
US5672074A (en) * 1995-06-22 1997-09-30 Panduit Corp. Connector mounting receptacles
US5738539A (en) * 1995-06-22 1998-04-14 Caveney; Jack Edward Connector mounting receptacle
EP0750371A3 (en) * 1995-06-22 1998-05-27 Panduit Corporation Connector mounting receptacles
US5766034A (en) * 1995-06-22 1998-06-16 Panduit Corp. Connector mounting receptacles
EP1143576A1 (en) * 1995-06-22 2001-10-10 Panduit Corporation Connector mounting receptacles
US20060237616A1 (en) * 2005-04-11 2006-10-26 Tyco Electronic Corporation Switch package assembly with mounting base adapter
US7642472B2 (en) * 2005-04-11 2010-01-05 Tyco Electronics Corporation Switch package assembly with mounting base adapter

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Publication number Publication date
DE1590102B1 (en) 1972-09-14
BE679038A (en) 1966-09-16
NL6604845A (en) 1966-10-13
ES325372A1 (en) 1967-01-01
GB1127526A (en) 1968-09-18
FR1515834A (en) 1968-03-08

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