US3266277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortise cylinder dead-lock
Assignee: Individual
•
Filing: 1964-10-05
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Granted: 1966-08-16
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Chesler Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A MORTISE CYLINDER DEAD-LOCK HAVING INNER AND OUTER KNOBS THAT CONTROL MEANS FOR RETRACTING A SPRING LATCH, SAID OUTER KNOB BEING PROVIDED WITH A KEY-OPERATED CYLINDER LOCK, SAID DEAD-LOCK COMPRISING: (A) A ROCKER PLATE PROVIDED WITH A DEAD-LOCKING EXTENSION AND NORMALLY BIASED TO A POSITON IN WHICH THE EXTENSION IS RETRACTED OUT OF THE PATH OF RETRACTIVE MOVEMENT OF THE LATCH, (B) MEANS OPERATED BY THE CYLINDER LOCK, WHEN TURNED IN ONE DIRECTION BY A KEY, TO MOVE THE ROCKER PLATE TO A POSITION IN WHICH THE EXTENSION THEREOF IS PROJECTED INTO THE PATH OF RETRACTIVE MOVEMENT OF THE LATCH TO DEAD-LOCK THE SAME, (C) A TRIP LEVER BIASED TO AUTOMATICALLY LATCH THE ROCKER PLATE IN THE LATTER POSITION, AND (D) CAM MEANS ENGAGED BY THE CYLINDER LOCK-OPERATED MEANS, WHEN TURNED IN THE OPPOSITE DIRECTION BY A KEY, TO TRIP SAID TRIP LEVER AND, THEREBY, RELEASE THE ROCKER PLATE TO ITS NORMAL BIASED POSITION.
Claim 2
Dependent Claim
154 words
A MORTISE CYLINDER DEAD-LOCK HAVING INNER AND OUTER KNOBS THAT CONTROL MEANS FOR RETRACTING A SPRING LATCH, SAID OUTER KNOB BEING PROVIDED WITH A KEY-OPERATED CYLINDER LOCK, SAID DEAD-LOCK COMPRISING: (A) A ROCKER PLATE PROVIDED WITH A DEAD-LOCKING EXTENSION AND NORMALLY BIASED TO A POSITON IN WHICH THE EXTENSION IS RETRACTED OUT OF THE PATH OF RETRACTIVE MOVEMENT OF THE LATCH, (B) MEANS OPERATED BY THE CYLINDER LOCK, WHEN TURNED IN ONE DIRECTION BY A KEY, TO MOVE THE ROCKER PLATE TO A POSITION IN WHICH THE EXTENSION THEREOF IS PROJECTED INTO THE PATH OF RETRACTIVE MOVEMENT OF THE LATCH TO DEAD-LOCK THE SAME, (C) A TRIP LEVER BIASED TO AUTOMATICALLY LATCH THE ROCKER PLATE IN THE LATTER POSITION, AND (D) CAM MEANS ENGAGED BY THE CYLINDER LOCK-OPERATED MEANS, WHEN TURNED IN THE OPPOSITE DIRECTION BY A KEY, TO TRIP SAID TRIP LEVER AND, THEREBY, RELEASE THE ROCKER PLATE TO ITS NORMAL BIASED POSITION.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |