US3257136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible latch unit for a unit lock
Assignee: Individual
•
Filing: 1963-10-28
•
Granted: 1966-06-21
•
Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Fred J Russell
- 👤 Roger J Nolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:32
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1097; Y10T292/62; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8459; Y10T70/8541; Y10T70/8865
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A UNIT LOCK OF THE TYPE ADAPTED TO BE INSTALLED IN A CUTOUT RECESS AT THE EDGE OF A DOOR HAVING A BEVELLED SWINGING EDGE COMPRISING A RETRACTOR ASSEMBLY AND A LATCH BOLT ASSEMBLY, SAID LATCH BOLT ASSEMBLY COMPRISING A LATCH HOUSING HAVING AN END FACE SET AT AN ANGLE TILTED TRANSVERSELY TO CORRESPOND WITH THE BEVEL ON THE SWINGING EDGE OF THE DOOR IN A SELECTED DIRECTION, A RELEASABLE CONNECTION BETWEEN SAID HOUSING, SAID CONNECTION COMPRISING MEANS ON ONE OF SAID HOUSING FORMING A PAIR OF HORIZONTALLY SPACED RECESSED TRACKS AND HAVING A SPACE THEREBETWEEN, SAID TRACKS EXTENDING IN PLANES PARALLEL TO THE FACES OF THE DOOR AND HAVING OUTWARDLY OPEN SIDES FACING RESPECTIVE FACES OF THE DOOR, AND MEANS ON THE OTHER OF SAID HOUSING COMPRISING A PAIR OF HORIZONTALLY SPACED SHOES EXTENDING IN DIRECTIONS PARALLEL TO THE FACES OF THE DOOR, SAID MEANS BEING
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |