Patent US3208781A successfully refreshed from Google Patents.
US3208781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
General purpose latch
Assignee: Douglas Aircraft Co Inc
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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 08:18
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
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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 |