US3704906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch device
Assignee: General Electric Co
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Filing: 1970-09-14
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Granted: 1972-12-05
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Expires: 1990-09-14
Abstract
Abstract Latch device for street lighting luminaires for latching a refractor closure to the luminaire housing. Latch lever arm extending through opening in front of closure member has 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.
Inventors
- 👤 Jonathan C Abercrombie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/10; E05C19/12; E05C19/14; Y; Y10; Y10S; Y10S292/00; Y10S292/49; Y10T; Y10T292/00; Y10T292/08; Y10T292/087; Y10T292/0871
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
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 releasably securing said closure means and said housing in closed assembly, said 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 movable through 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 latched and unlatched positions upon turning of said lever about said pivot axis in snap-over-center movements.
Claim 2
Dependent Claim
185 words
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 releasably securing said closure means and said housing in closed assembly, said 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 movable through 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 latched and unlatched positions upon turning of said lever about said pivot axis in snap-over-center movements.
Claim 3
Dependent Claim
29 words
A device as defined in claim 1, the journal bearings of said upper journal bearing means being laterally spaced from the journal bearings of said lower journal bearing means.
Claim 4
Dependent Claim
30 words
A device as defined in claim 1, the journal bearings of said upper journal bearing means being spaced laterally inwardly from the journal bearings of said lower journal bearing means.
Claim 5
Dependent Claim
62 words
A device as defined in claim 1, said spring means being detachably secured at said one end to said lever, 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.
Claim 6
Dependent Claim
24 words
A device as defined in claim 3, said lever at said one end having projecting retaining means arranged outwardly adjacent said upper journal bearings.
Claim 7
Dependent Claim
33 words
A device as defined in claim 5, 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.
Claim 8
Dependent Claim
36 words
A device as defined in claim 6, said 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.
Claim 9
Dependent Claim
16 words
A device as defined in claim 1, said catch comprising a projection integral with said housing.
Claim 10
Dependent Claim
83 words
A device as defined in claim 1, 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.
Claim 11
Dependent Claim
37 words
A device as defined in claim 9, said 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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |