Push button door lock
Abstract
Abstract A COMPACT PUSH BUTTON DOOR LOCK IS PROVIDED WHICH CAN BE INSTALLED IN AN ORDINARY DOOR WITHOUT ENLARGING THE NORMAL OPENING THROUGH WHICH A CONVENTIONAL LOCK IS INSTALLED AND UTILIZING A STANDARD LATCH. THE LOCK INCLUDES A PLURALITY OF FRICTION DRIVEN DISCS EACH OF WHICH HAS A CONTROL BUTTON. A LARGE NUMBER OF PERMUTATIONS ARE POSSIBLE DESPITE THE SMALL SIZE OF THE LOCK MAKING IT ALMOST IMPOSSIBLE FOR SOMEONE WHO DOES NOT KNOW THE COMBINATION TO OPEN THE LOCK. IN ACCORDANCE WITH ONE EMBODIMENT OF THE PRESENT INVENTION, THE DISCS ARE PROVIDED WITH BREAKOUT MEMBES SO THAT THE HOME OWNER CAN PROVIDE HIS OWN COMBINATION. THE LOCK CAN ALSO BE OPENED IN THE USUAL MANNER WITH A KEY. D R A W I N G
Inventors
- 👤 Thomas K Mcgourty
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |