US3279836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dead latch construction
Assignee: Newfrey LLC
•
Filing: 1964-02-24
•
Granted: 1966-10-18
•
Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Richard H Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/098; Y10T292/0982; Y10T292/0983; Y10T292/0984; Y10T292/0985; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T292/62; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN A DEAD LATCH MECHANISM, THE COMBINATION OF; A HOUSING HAVING A DOGGING OPENING THEREIN; A LATCH BOLT MOUNTED FOR RECIPROCATION IN SAID HOUSING; A LATCH BOLT EXTENSION SECURED TO SAID LATCH BOLT, SAID EXTENSION DEFINING AN ENCLOSURE; A DOG PIVOTALLY MOUNTED UPON SAID EXTENSION AND IN SAID ENCLOSURE AT ONE SIDE OF THE CENTRAL LONGITUDINAL AXIS OF SAID HOUSING, SAID DOG HAVING PIVOT POINTS ON THE OPPOSITE SIDES THEREOF ENGAGEABLE IN OPPOSITE PORTIONS OF SAID LATCH BOLT EXTENSION; AND A SPRING ENGAGEABLE WITH SAID DOG TO BIAS SAID DOG TO A DOGGING POSITION IN SAID OPENING WHEREBY WHEN SAID LATCH BOLT EXTENSION IS WITHDRAWN INTO SAID HOUSING AN ANGULAR
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |