US3257831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction lock cylinder
Assignee: Schlage Lock Co LLC
•
Filing: 1964-04-13
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Granted: 1966-06-28
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Schlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/005; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7446; Y10T70/7452; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7684; Y10T70/7729; Y10T70/7734
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A CONSTRUCTION LOCK CYLINDER COMPRISING A CYLINDER BODY HAVING A PLUG BORE THEREIN, A CYLINDER PLUG ROTATABLY DISPOSED IN SAID PLUG BORE, MEANS DEFINING A KEY CHANNEL EXTENDING AXIALLY ALONG THE PERIPHERY OF SAID CYLINDRICAL PLUG, A PARTIAL RING ROTATABLY ENGAGING SAID CYLINDER BODY AND HAVING ENDS ADAPTED TO LIE ON OPPOSITE SIDES OF SAID KEY CHANNEL, AND MEANS ON SAID CYLINDER PLUG FOR ROTATING SAID RING TO MOVE SAID ENDS TO LIE ON THE SAME SIDE OF SAID KEY CHANNEL.
References Cited (Backward Citations)
US1650568A
Cited
US1788834A
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US1913963A
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US1914639A
Cited
US2748590A
Cited
US2877638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |