US3208781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
General purpose latch
Assignee: Douglas Aircraft Co Inc
•
Filing: 1963-04-16
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Granted: 1965-09-28
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Expires: 1983-04-16
Abstract
No abstract record available.
Inventors
- 👤 Walter T Appleberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:33
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; E05C3/14; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0934; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A LATCH ADAPTED TO BE RECEIVED IN AN APERTURE IN A PLATE COMPRISING: A LEVER HAVING A NOTCH ADAPTED TO RECEIVE AND ROTATE ON AN EDGE SURROUNDEING SAID APERTURE IN SAID PLATE A COIL SPRING HOLDER ON SAID LEVER FOR HOLDING ONE END OF A COIL SPRING; A STACKABLE COIL SPRING HAVING ONE END ABUTTING SAID COIL SPRING HOLDER AND AN OPPOSITE END ABUTTING SAID PLATE; AND A PROTRUSTION EXTENDING FROM SAID LEVER FROM A POINT SUBSTANTIALLY OPPOSITE SAID NOTCH, THE HEIGHT OF SAID PROTRUSION BEING GREAT ENOUGH THAT IT ABUTS THE EDGE OF SAID PLATE SURROUNDING SAID HOLE WHEN SAID LEVER
Claim 2
Dependent Claim
102 words
A LATCH ADAPTED TO BE RECEIVED IN AN APERTURE IN A PLATE COMPRISING: A LEVER HAVING A NOTCH ADAPTED TO RECEIVE AND ROTATE ON AN EDGE SURROUNDEING SAID APERTURE IN SAID PLATE A COIL SPRING HOLDER ON SAID LEVER FOR HOLDING ONE END OF A COIL SPRING; A STACKABLE COIL SPRING HAVING ONE END ABUTTING SAID COIL SPRING HOLDER AND AN OPPOSITE END ABUTTING SAID PLATE; AND A PROTRUSTION EXTENDING FROM SAID LEVER FROM A POINT SUBSTANTIALLY OPPOSITE SAID NOTCH, THE HEIGHT OF SAID PROTRUSION BEING GREAT ENOUGH THAT IT ABUTS THE EDGE OF SAID PLATE SURROUNDING SAID HOLE WHEN SAID LEVER
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |