Patent US3715899A successfully refreshed from Google Patents.
US3715899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rim cylinder lock mechanism
Assignee: Stanley Security Solutions Inc
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Filing: 1971-08-09
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Granted: 1973-02-13
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Expires: 1991-08-09
Abstract
Abstract A LOCK CYLINDER FOR MOUNTING ON THE FACE OF A DOOR WITH MOUNTING SCREWS WHICH ARE CONCEALED BY A FACE PLATE WHICH IS BREECH LOCKED TO THE CYLINDER BODY AND HELD IN LOCKED POSITION BY RECEPTION OF A LOCK CORE IN A NON-CONCENTRIC ALIGNED OPENINGS IN THE FACE PLATE AND BODY. THE CORE AND NONCENTRIC OPENINGS ARE DESIRABLY FIGURE-8 SHAPED, AND THE MOUNTING SCREWS LOCATED BESIDE THE NARROW WAIST PORTION OF THE FIGURE-8 SHAPE, WITHIN A CYLINDRICAL ENVELOPE. A BOLT IS ACTUATED BY A BELL CRANK WHICH SWINGS IN AN ARC BETWEEN THE TWO SCREWS.
Inventors
- 👤 R Mccullum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:08
CPC Classifications
E; E05; E05B; E05B9/00; E05B9/08; E05B9/082; E05B63/00; E05B63/0017; Y; Y10; Y10S; Y10S70/00; Y10S70/57; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7638; Y10T70/765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |