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Publication numberUS3729603 A
Publication typeGrant
Publication dateApr 24, 1973
Filing dateAug 26, 1971
Priority dateAug 26, 1971
Publication numberUS 3729603 A, US 3729603A, US-A-3729603, US3729603 A, US3729603A
InventorsFoltz R
Original AssigneeLawrence Brothers
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hinge plate switch structure
US 3729603 A
Abstract
The present invention relates generally to improvements in door hinge structures and more particularly to improvements in door hinges adapted to control electrical circuits. The hinge disclosed herein includes a pair of hingedly connected hinge plates or leaves having in association therewith contact means for opening and closing an electrical circuit, one hinge leaf being mountable upon the vertical edge of the door and the other mountable upon a door frame.
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Description  (OCR text may contain errors)

United States Patent 1191 Foltz 1 51 Apr. 24, 1973 154] HINGE PLATE SWITCH- STRUCTURE 2,794,085 5/1957 De Angelis ..200/61.7 x 2,921,155 1 1960 Basso ....200/61.76X [75] Inventor steflmg l"- 3,190,982 6/1965 Woodcock ..200/6l.81 [73] Assignee: Lawrence Brothers, Inc., Sterling, 595,963 12/1897 gh .8 [1L 2,710,329 6/1955 Herterick ..200/6l.82X

[22] Filed: 1.971 Primary Examiner-J. R. Scott [21] Appl. NoL: 175,148 Attorney-Roy H. Olson et a1.

52 U.S. c1. ..200/61.7, ZOO/61.82, 339/4 [57] ABSTRACT [51] lnt.Cl.... ..H0lh 3/16 The present invention relates generally to improve- [58] Field of Search ..200/8 R, 8 A, 6 A, ments in door hinge structures and more particularly 200/61.64-61.83; 339/4 toimprovements in door hinges adapted to control electrical circuits. The hinge disclosed herein includes [56] References Cited a pair of hingedly connected hinge plates or leaves having in association therewith contact meansfor UNITED STATES PATENTS opening and closing an electrical circuit, one hinge 1,902,195 3/1933 Swahn ..339/4X leaf being mountable upon the vertical edge of the 3,238,316 3/1966 door and the other mountable upon a door frame. 2,810,114 10/1957 3,124,950 3/1964 Nallinger ..200/8 R X 3 Claims, 11 Drawing Figures Patented April 24, 1973 3,729,603

2 sheetsr-sheet l kbfi Patented April 24, 1973 2 Shets-Sheet 2 1 HINGE PLATE SWITCH STRUCTURE SUMMARY OF THE INVENTION The present invention is concerned primarily with provision of simple and very practical door hinge arrangement adapted to control the opening and closing of an electrical circuit as an incident to the opening and closing of a door member with which the hinge may be associated.

' More specifically, the present invention contemplates a hinge design of the above mentioned type, wherein the hinge leaves are equipped with a novel arrangement of relatively shiftable contact actuating means, adapted upon the swinging of the door member between open and closed position to condition an electrical circuit. I

Still more specifically, the present invention envisions a unique, telescopic arrangement of electrical actuating elements associated with hinge leaves which serve effectively to open and close an electrical circuit.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other objects and advantages of the present invention will be more readily understood when considered in connection with the accompanying drawings wherein:

FIG. 1 is a fragmentary perspective view of a door member and frame equipped with a hinge structure which is representative of one embodiment of the present invention;

FIG. 2 is an enlarged, perspective view of the novel hinge structure contemplated by the present invention;

FIG. 3, is a fragmentary plan view of the hinge device illustrated in FIG. 2, when said hinge is in a closed position,-said view being taken substantially along the line 3-3 of FIG. 1;

FIG. 4, is a fragmentary sectional view taken longitudinally of the telescopic contact actuating elements;

FIG. 5, is a fragmentary perspective view of a door member and frame equipped with a hinge device of modified form contemplated by the present invention;

FIG. 6, is an enlarged perspective view of the modified hinge device;

FIG. 7, is a side elevation view of a Microswitch associated with a hinge leaf secured to a door frame;

FIG. 8 is a view similar to FIG. 6, disclosing the leaf spring operatively engaging a switch actuating plunger;

FIG. 9 is a plan view of the switch device illustrated in FIGS. 7 an 8;

FIG. 10 is a detailed view of the switch actuating plunger; and

FIG. 11 is a view similar to FIG. 8, illustrating a further modified form of switch mechanism secured to a hinge leaf.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings more in detail, wherein like numerals are employed to designate similar parts throughout the various views, it will be seen in FIGS. 1 to 4 inclusive, that one embodiment of a novel hinge device contemplated by the present invention is. designated generally by the numeral 12. In FIG. 1, the hinge device 12 is illustrated in operative association with the vertical edge 14 of a door member l6 and a vertical door frame member 18. A conventional hinge device 20 is attached to the lower portion of the door edge 14 and the door frame 18.

The hinge device 12 includes two hinge plates or leaves 22 and 24 pivotally connected by a pin 26. Projecting laterally of and secured to the hinge leaf 22 is an electrically nonconductive sleeve 28 in which is mounted a metallic plug or electrical contact element 30. The insulating sleeve 28 extends into a complementary aperture 32 in the door member 16. The free extremity of the member 30 is suitably coupled with an electrical conductor 34, as by means of a crimped sleeve device 31. An insulating sleeve 36 is secured to and projects laterally of the hinge leaf 24 into an opening 38 of the frame 18. A metallic contact member or plunger 40 is longitudinally shiftable within the sleeve 36. A coil spring 42 encircles a reduced extremity of the shiftable contact member 40. When the hinge leaves 22 and 24 occupy the door closing position shown in FIGS. 3 and 4, of the contact member or plug 30, the spring 42 is compressed and thus serves to maintain good electrical contact between the members 30 and 40. The free extremity of the contact member 40 is coupled in any suitable manner with an electrical conductor 44, as by means of a crimped sleeve device 46. Outward movement of the contact member 40 is limited by the abutment of the extremity of the coupling sleeve device 46 with the extremity of the sleeve 36.

From the foregoing it will be apparent that when the door member 16 is in closed position the contact members 30 and 40 will function to close the electrical circuit of which the conductors 34 and 44 form a part. Such a circuit could include a signaling device or other electrically controlled mechanism (not shown). Also, as illustrated in FIG. 2, a plurality of circuit controlling devices could be mounted in the door member 16 and the door frame 18, to accommodate a variety of electrical circuits.

In FIGS. 5 to 10 inclusive a modified form of hinge device 12a is shown. The elements of the hinge device 12a, corresponding with the elements of the previously described hinge device 12, are designated by like numerals bearing the suffix (a). Whereas the previously described hinge device 12 employs the contact elements 30 and 40, the hinge device 12a incorporates a Microswitch mechanism designated generally by the numeral 48. The switch mechanism 48 is suitably mounted upon a hinge leaf 24a by mean of a bracket 50. As the hinge plate or leaf 22a moves from open to closed position, as illustrated in FIGS. 7 and 8 respectively, said plate engages the projecting extremity of an electrically nonconducting or insulating pin 40a, so as to close the switch mechanism 48 by deflecting a yieldable switch element 52. Terminal members54'are adapted to accommodate electrical conductors (not shown).

In FIG. I I, a slightly modified switch mechanism 48b is illustrated wherein the switch housing is mounted flush with a hinge plate 24b. A button or pin 40b forming an element of the switch mechanism is engaged by the other hinge plate 22b as said plate approaches its door closing position. Depression of the button 40b effects actuation of the switch mechanism 48b.

From the foregoing description, it will be understood that the present invention contemplates the provision of an improved and unique hinge device for swinging doors which is adapted to control an electrical circuit. Obviously such electrical circuits may be designed for use in a wide variety of environments, as for example for signaling the open and closed condition of a swinging door at a remote location. The structural simplicity of the hinge device contemplated by the present invention enables'the economical production thereof. The embodiments of the invention as illustrated in FIGS. 1 to 4, inclusive, incorporate cylindrical contact members which are composed of electrically conductive metallic material, and hence require the use ofthe sleeves 28 and 36 to electrically insulate the contact members 30 and 40 from the metallic hinge plates 22 and 24, respectively. However, when the switch mechanisms 48 and 48b are employed, the shiftable cylindrical members 40a and 40b are electrically nonconductive, and it is unnecessary to equip the hinge plates 22a and'22b with the cylindrical contact member 30 illustrated in FIGS. 1 to 4, inclusive. This obviously makes for simplicity in design and requires only slight movement of the door member to effect closing of the switch mechanisms 48 and 48b.

The invention is claimed as follows:

1. An electrical circuit control hinge device including first and second pivotally connected hinge plates, the first of said plates being apertured to accommodate fastener elements such as screw members for attachment to the vertical edge of a swingable door member and the second being apertured to accommodate fastener elements such as screw members for attachment in a fixed position upon a vertical door frame, electrical circuit control means mounted on said second hinge plate including an electrically nonconductive control member projectable from the exposed surface of said second hinge plate and shiftabletransversely of said second hinge plate as an incident to the approach thereto of said first hinge plate, means for connecting said control means with an electrical conductor, and means for biasing said control member toward the projecting position thereof.

2. An electrical circuit control hinge device as set forth in claim 1, electrical circuit control means includes switch means operable as an incident to the movement of said electrically nonconductive shiftable member.

3. An electrical circuit control hinge device as set forth in claim 1, wherein said electrical circuit control means includes a switch spring adapted to be engaged and moved by said electrically nonconductive shiftable member.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US595963 *Nov 27, 1896Dec 21, 1897 David wiley mccaughet
US1902195 *May 6, 1932Mar 21, 1933Adolph SwahnLocking system for strong boxes
US2710329 *Jul 23, 1952Jun 7, 1955United Carr Fastener CorpElectrical assembly
US2794085 *Aug 4, 1955May 28, 1957American Optical CorpOphthalmic mounts
US2810114 *Dec 31, 1953Oct 15, 1957Borg WarnerFloating electrical connector for a cabinet door
US2921155 *Feb 10, 1958Jan 12, 1960James A HerringtonSelf-adjusting switch
US3124950 *Mar 17, 1964 figure
US3190982 *Jan 23, 1962Jun 22, 1965Stewart Warner CorpAdjustable plunger switch
US3238316 *Nov 12, 1963Mar 1, 1966Western Electric CoSpherical shaped multiple contact switch with pivot arm and plunger mechanism
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4049934 *Jul 30, 1976Sep 20, 1977Lawrence Brothers Inc.Security hinge having adjustable cam operator and reciprocable cam follower actuated switch
US4066857 *Jul 24, 1975Jan 3, 1978Stanley WorksSwitch activating hinge having reciprocating cam follower switch actuator
US4168409 *Aug 14, 1978Sep 18, 1979Lawrence Brothers, Inc.Security hinge with sealed switch and operator concealed therein
US4417776 *Jul 30, 1981Nov 29, 1983Olympus Optical Co., Ltd.Connection terminal device for electrical implements
US4455462 *Jan 25, 1982Jun 19, 1984Delucia Victor EArc proof dual interlock safety switch
US5229560 *Aug 5, 1992Jul 20, 1993Demarco Stephen RVehicle door-jamb switch assembly
US6083010 *Jun 30, 1998Jul 4, 2000Lucent Technologies, Inc.Hinge with integrated grounding feature
US6503751Aug 14, 2001Jan 7, 2003Thermo Forma Inc.Controlled atmosphere incubator
US6797900Sep 19, 2002Sep 28, 2004Drew HoffmanModular contact switch
US6867382Feb 9, 2004Mar 15, 2005Lawrence Andrew HoffmanModular contact switch
US6878177Aug 28, 2001Apr 12, 2005Thermo Forma, Inc.Incubator having combined HEPA and VOC filter
US7136281 *Dec 21, 2004Nov 14, 2006Hannspree Inc.Display and electrical connection structure thereof
US7271358 *Sep 25, 2006Sep 18, 2007Bernstein AgSwitching hinge
US7361855 *Sep 3, 2004Apr 22, 2008Magcode AgDevice for establishing an electrical connection
US7507922 *Dec 18, 2006Mar 24, 2009Elesa S.P.A.Hinge with built in safety switch
US8220202 *Jul 17, 2012James W RileyHinge pin mounted door switch
US8510989 *Jun 29, 2012Aug 20, 2013Robert Bosch GmbhHinge pin mounted door switch
US8776439Jun 9, 2010Jul 15, 2014Hill Phoenix, Inc.Modular door system for refrigerated case
US8845045 *May 9, 2011Sep 30, 2014Hill Phoenix, Inc.Door closing control and electrical connectivity system for refrigerated case
US9157675May 4, 2011Oct 13, 2015Hill Phoenix, Inc.Insulated case construction
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US20040159531 *Feb 9, 2004Aug 19, 2004Hoffman Lawrence AndrewModular contact switch
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US20070051601 *Oct 4, 2005Mar 8, 2007Hu-Sen WangCloseable electronics device
US20070063586 *Sep 3, 2004Mar 22, 2007Hermann NeidleinDevice for establishing an electrical connection
US20070068780 *Sep 25, 2006Mar 29, 2007Bernstein AgSwitching hinge
US20070157431 *Dec 18, 2006Jul 12, 2007Elesa S.P.A.Hinge with built in safety switch
US20100115844 *Nov 13, 2008May 13, 2010Bosch Security Systems, Inc.Hinge pin mounted door switch
US20110304254 *Dec 15, 2011Hill Phoenix, Inc.Door closing control and electrical connectivity system for refrigerated case
US20120266411 *Oct 25, 2012Robert Bosch GmbhHinge Pin Mounted Door Switch
USRE30716 *Aug 10, 1978Aug 18, 1981The Stanley WorksSwitch activating hinge having reciprocating cam follower switch actuator
DE3635179A1 *Oct 16, 1986Apr 21, 1988Geze GmbhStop device for door closers
EP0304241A2 *Aug 12, 1988Feb 22, 1989John Leon BrownHinge switch arrangement
EP1455038A2 *Dec 13, 2003Sep 8, 2004Carl Fuhr GmbH & Co. KGLocking system, in particular door lock, window lock or similar
EP1455038A3 *Dec 13, 2003May 9, 2007Carl Fuhr GmbH & Co. KGLocking system, in particular door lock, window lock or similar
Classifications
U.S. Classification200/61.7, 200/61.82, 439/31
International ClassificationH01H3/16
Cooperative ClassificationH01H3/162
European ClassificationH01H3/16B1
Legal Events
DateCodeEventDescription
Aug 29, 1995ASAssignment
Owner name: LASALLE NATIONAL BANK, ILLINOIS
Free format text: LICENSE MORTGAGE;ASSIGNOR:LAWRENCE BROTHERS, INC.;REEL/FRAME:007613/0037
Effective date: 19950725