US3089720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination latch bolt and friction latch
Assignee: Schlage Lock Co LLC
•
Filing: 1961-02-21
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Granted: 1963-05-14
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Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Schlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:22
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/10; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0987; Y10T292/68; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5381
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A DOOR LOCK, SAID LOCK HAVING A RETRACTOR, SAID RETRACTOR HAVING A FIXED STROKE, AND A LATCH BOLT, SAID LATCH BOLT HAVING A LONGER STROKE, A LINK CONNECTING THE LATCH BOLT WITH THE RETRACTOR, A STRIKE PLATE TO RECEIVE THE LATCH BOLT, SAID RETRACTOR WHEN FULLY RETRACTED RETRACTING THE LATCH BOLT SUBSTANTIALLY THREE-QUARTERS OF ITS STROKE WITH RELATION TO THE STRIKE PLATE, A YIELDING CONNECTION BETWEEN THE LATCH BOLT AND THE RETRACTOR PERMITTING MOVEMENT OF THE LATCH BOLT BEYOND THAT CAUSED BY THE RETRACTOR, SAID YIELDING MOVEMENT PERMITTING FULL RETRACTION OF THE LATCH BOLT WHEN A PUSH OR PULL IS APPLIED TO THE DOOR.
Claim 2
Dependent Claim
105 words
IN A DOOR LOCK, SAID LOCK HAVING A RETRACTOR, SAID RETRACTOR HAVING A FIXED STROKE, AND A LATCH BOLT, SAID LATCH BOLT HAVING A LONGER STROKE, A LINK CONNECTING THE LATCH BOLT WITH THE RETRACTOR, A STRIKE PLATE TO RECEIVE THE LATCH BOLT, SAID RETRACTOR WHEN FULLY RETRACTED RETRACTING THE LATCH BOLT SUBSTANTIALLY THREE-QUARTERS OF ITS STROKE WITH RELATION TO THE STRIKE PLATE, A YIELDING CONNECTION BETWEEN THE LATCH BOLT AND THE RETRACTOR PERMITTING MOVEMENT OF THE LATCH BOLT BEYOND THAT CAUSED BY THE RETRACTOR, SAID YIELDING MOVEMENT PERMITTING FULL RETRACTION OF THE LATCH BOLT WHEN A PUSH OR PULL IS APPLIED TO THE DOOR.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |