US3704906A - Latch device - Google Patents

Latch device Download PDF

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Publication number
US3704906A
US3704906A US3704906DA US3704906A US 3704906 A US3704906 A US 3704906A US 3704906D A US3704906D A US 3704906DA US 3704906 A US3704906 A US 3704906A
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US
United States
Prior art keywords
lever
housing
closure
opening
spring
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
Jonathan C Abercrombie
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3704906A publication Critical patent/US3704906A/en
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
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/10—Hook fastenings; Fastenings in which a link engages a fixed hook-like member
    • E05C19/12—Hook fastenings; Fastenings in which a link engages a fixed hook-like member pivotally mounted around an axis
    • E05C19/14—Hook fastenings; Fastenings in which a link engages a fixed hook-like member pivotally mounted around an axis with toggle action
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/49—Toggle catches
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/087—Loops
    • Y10T292/0871—Sliding and swinging, lever-operating means

Definitions

  • latch spring detachably connected to it.
  • the spring engages an integrally formed catch on the front surface of the luminaire housing.
  • the lever arm has pivot pins cooperating with spaced upper and lower journal bearings formed on the closure member. The lever arm can be removed through the inner side of the closure member only after the latch spring is detached from the lever arm.
  • LATCH DEVICE The present invention relates 'to a latch device, and more particularly to alatchingmechanism adapted for releasably fastening a closure to a luminaire housing.
  • Another object of theinvention is to provide a latch device of the. above type whereinno fastening hardware isrequirecl to hold the assembly together.
  • the present invention relates in a preferred embodiment to a closure device comprising a housing, closuremeans movably secured to the housing for movement between closedand open positions relative to the housing, and latching means forreleasably securing the closure means to the housing in closed assembly, the latching means comprising a catch on the housing,'upper and lowerjournal bearing means formed on the closure means defining a pivot axisand each comprising spaced journal bearings, the upper and .:lower :journal bearing means defining a laterally extending openingtherebetween, a lever havthe spring means being movable into latched and unlatched positions upon turning of the lever about the pivot axis in snap-over-center movements.
  • FIG. l is an elevational-view partly in section of a luminaire embodyingthe invention
  • FIG. 2 is an enlarged detail view partly in section, of Q the front portion of the FIG. 1 luminaire showing the latching deviceof the invention in latched position;
  • FIG. 1 there is shown a street lighting luminaire in which the invention is embodied and which comprises an elongated upper housing I mounted at its rear end towards the bottom of housing 1, and is suitably FIG. 3 is asimilar view showing the latching device in secured, as by screws 2a or. other means, to the housing.
  • Lamp 5 is arranged within reflector 2 and threadably secured at its baseend to Iampholder 6.
  • the bottom of housing 1 is closed by closure member 4 which is formed at its front end with a retaining frame 4a in which refractor3 is mounted.
  • Closure member 4 is hingedly connected at its rear end to housing 1 by suitable hinge meanstnot shown) for opening and closing movement relativeto the housing.
  • Closure member 4 is releasably attached at its front end by latch mechanism 7.
  • closure member 4 with refractor 3 retained therein may be swung downwardly about its hinge connection at its rearend, as indicated by the interrupted lines, to provide access to the interior of the luminaire housing for re-lamping or other servicing operations.
  • refractor closure 4 and latching it to housing .l Upon closing refractor closure 4 and latching it to housing .l,refractor 3 is brought into tight sealing engagement with the gasketed flange 2b of reflector 2.
  • alatch mechanism 7 comprising an operating lever arm 8 (see FIG. 5) integrally formed at mediate their ends for' respectively receiving the free ends 9a, 9b of a bent generally U-shaped latch spring 9. Between pins 8a, 8b, lever arm 8 is formed with an intermediate journal portion 8m. The end portions of pins 8a, 8b have flat rear surfaces, and those portions of pins 8a, 8b outwardly adjacent to flanges 8c, 8d have flat front. faces 83, 8h. Pins 8a, 8b are further formed with angular projections 8i, 8k spaced inwardly from the ends of the pins. I
  • Closure member 4 is formed at its front end with a recessed portion 11 for receiving, retaining, and defining operational limits of latch lever 8.
  • Outer journal bearings 10a and 10b are formed in bearing bosses 10,10 at opposite sides of recess 11 in closure member 4for receiving theends of opposite pins 8a, 8b, thus retaining lever arm 8 (see FIG. 4).
  • a lower ledge extends between bearing bosses 10,10 as seen best in FIG. 6.
  • An upper ledge 12 formed integrally with closure 4 extends above lower ledge 10c parallel thereto and spaced therefrom so as to define an elongated laterally extending opening 14.
  • the ends of ledge 12 which are formed with inner journal bearings 12a, 12b are spaced inwardly of bosses 10,10, the arrangement being such that both inner and outer journal bearings have a common axis.
  • Upper housing 1 is recessed in its front end and is formed therein with an integral ledge or catch 1a (see FIGS. 3 and 4).
  • lever arm 8 is arranged extending downwardly below closure member 4 with its pivot pins 8a, 8b engaging journal bearings 12a,
  • lever arm 8 is turned in the direction of the arrow shown in FIG. 2 so as to release spring 9 from housing catch la as shown in FIG. 3 and permit closure 4 to be swung downwardly to open position.
  • the curved portions of the pivot pins opposite fiat surfaces 83, 8h respectively rotatably bear on upper (inner) journal bearings 12a, 12b, and intermediate journal portion 8m bears on the lower surface of ledge 12, as is evident in FIGS. 2 and 3.
  • projections 8i, 8k on lever arm 8 formed between the pin bearingsurfaces are arranged outwardly adjacent the outer ends of ledge 12, so that during the turning movement of lever arm 8, projections 8i, 8k serve as guides or retaining means for holding lever arm 8 against substantial lateral shifting relative to ledge 12.
  • lever arm 8 with spring 9 removed is inserted as shown in FIG. 7
  • lever arm 8 cannot be disassembled from closure member 4, since any attempt to'move arm 8 back into closure member 4 when in the position shown in FIG. 3 will result in the free ends of spring 9 coming into contact with stop bosses 15, 15a formed at opposite sides of recess 1 1 in closure member 4 (see FIGS. 3 and 4). Only by first removing spring9 from lever 8 can the latter be moved back into closure member 4 for disassembly therefrom. In such reverse movement of lever arm 8, the latter must be in the position shown in FIG. 3 to enable its cut-away pin surfaces to clear the projections of bosses 10, 10' and ledge 12 as previously described, so that lever arm 8 can be entirely removed.
  • a closure device comprising, in combination, a housing, closure means movably secured to said housing for movement between closed and open positions relative to said housing, and latching means for rele sabl securin said losure means and said housing in close assembfi', Sal; latching means comprising a catch on said housing, upper and lower journal bearing means formed on said closure means defining a pivot axis and each comprising spaced journal bearings, said upper and lower journal bearing means defining a laterally extending opening therebetween, a lever having one end thereof formed with opposite laterally projecting pivot pins, said pivot pins arranged in said journal bearings in separable engagement therewith, said lever being turnable about said pivot axis between latched and unlatched positions, said lever being movablethrough said opening when in unlatched position for assembly and disassembly from said closure means, and elongated spring means pivotally secured at one end to said lever and engageable at its other end with said housing catch, said spring means being movable into
  • journal bearings of said upper journal bearing means being laterally spaced from the journal bearings of said lower journal bearing means.
  • journal bearings of said upper journal bearing means being spaced laterally inwardly from the journal bearings of said lower journal bearing means.
  • said projecting pivot pins having recessed end portions for clearing said lower journal bearing means when said lever is moved through said opening in unlatched position.
  • pivot pins having recessed portions inwardly of said end portions for clearing said upper journal bearing means when said lever is moved through said opening in unlatched position.
  • said catch comprising a projection integral with said housing.
  • said elongated spring means being in bent generally U-shaped form having a bight portion engageable with said housing catch and having laterally extending free ends detachably connected to said lever and projecting laterally therefrom, and stop means on said closure means adjacent said lever for preventing movement of said spring means through said opening with said lever, whereby disassembly of said lever from said closure means is enabled only after detachment of said spring means therefrom.
  • stop means comprising surface means arranged in the path of said projecting free ends of said spring means in movement of said lever toward said opening in unlatched position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Sheet Holders (AREA)
US3704906D 1970-09-14 1970-09-14 Latch device Expired - Lifetime US3704906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7190670A 1970-09-14 1970-09-14

Publications (1)

Publication Number Publication Date
US3704906A true US3704906A (en) 1972-12-05

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Application Number Title Priority Date Filing Date
US3704906D Expired - Lifetime US3704906A (en) 1970-09-14 1970-09-14 Latch device

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US (1) US3704906A (es)
ES (1) ES197309Y (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915913A (en) * 1984-05-22 1990-04-10 Genesis Medical Corporation Medical sterilizer device with improved latch mechanism
US20070212277A1 (en) * 2006-03-07 2007-09-13 Riley Edward D Medical instrument container system
US20080116095A1 (en) * 2006-03-07 2008-05-22 Riley Edward D Medical Instrument Container System
US20160010817A1 (en) * 2014-07-10 2016-01-14 H4X E.U. Luminaire, assembly for a grid ceiling, method for installing a luminaire, method for removing a luminaire, and removal tool
US10473307B2 (en) 2017-06-19 2019-11-12 Axis Lighting Inc. Removable positioning of light fixtures
US11300276B1 (en) 2020-09-29 2022-04-12 Axis Lighting Inc. Luminaire structure
US11867384B2 (en) 2017-06-19 2024-01-09 Axis Lighting Inc. Removable positioning of light fixtures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US323830A (en) * 1885-08-04 Heney a
US1901974A (en) * 1932-10-07 1933-03-21 Walter C Macy Sash latch
US2154001A (en) * 1937-09-15 1939-04-11 George R Green Closure fastening device
US3479701A (en) * 1967-08-16 1969-11-25 Gen Electric Latch device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US323830A (en) * 1885-08-04 Heney a
US1901974A (en) * 1932-10-07 1933-03-21 Walter C Macy Sash latch
US2154001A (en) * 1937-09-15 1939-04-11 George R Green Closure fastening device
US3479701A (en) * 1967-08-16 1969-11-25 Gen Electric Latch device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915913A (en) * 1984-05-22 1990-04-10 Genesis Medical Corporation Medical sterilizer device with improved latch mechanism
US20070212277A1 (en) * 2006-03-07 2007-09-13 Riley Edward D Medical instrument container system
US20080116095A1 (en) * 2006-03-07 2008-05-22 Riley Edward D Medical Instrument Container System
US7871582B2 (en) * 2006-03-07 2011-01-18 Symmetry Medical Usa Medical instrument container system
US8349271B2 (en) * 2006-03-07 2013-01-08 Symmetry Medical Manufacturing, Inc. Medical instrument container system
US9726339B2 (en) * 2014-07-10 2017-08-08 H4X E.U. Luminaire, assembly for a grid ceiling, method for installing a luminaire, method for removing a luminaire, and removal tool
US20160010817A1 (en) * 2014-07-10 2016-01-14 H4X E.U. Luminaire, assembly for a grid ceiling, method for installing a luminaire, method for removing a luminaire, and removal tool
US10222013B2 (en) 2014-07-10 2019-03-05 H4X E.U. Luminaire, assembly for a grid ceiling, method for installing a luminaire, method for removing a luminaire, and removal tool
US10473307B2 (en) 2017-06-19 2019-11-12 Axis Lighting Inc. Removable positioning of light fixtures
US10995939B2 (en) 2017-06-19 2021-05-04 Axis Lighting Inc. Removable positioning of light fixtures
US11359800B2 (en) 2017-06-19 2022-06-14 Axis Lighting Inc. Removable positioning of light fixtures
US11867384B2 (en) 2017-06-19 2024-01-09 Axis Lighting Inc. Removable positioning of light fixtures
US11300276B1 (en) 2020-09-29 2022-04-12 Axis Lighting Inc. Luminaire structure

Also Published As

Publication number Publication date
ES197309Y (es) 1975-10-01
ES197309U (es) 1975-04-16

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