Lock mechanisms for switches or the like
Abstract
Abstract EACH OF THE ILLUSTRATE LOCK MECHANISMS COMPRISES A LOCK BARREL OR CASING HAVING AN OPENING THEREIN FOR RECEIVING A LOCK CYLINDER WHICH IS FORMED WITH A LONGITUDINAL KEY SLOT. A COMBINED SPRING AND LOCKING MEMBER IS MOUNTED IN THE LOCK CYLINDER. IN ONE EMBODIMENT, THE SPRING AND THE LOCK MEMBER ARE MADE IN ONE PIECE FROM SHEET METAL THE SPRING IS IN THE FROM OF A SLENDER SPRING ARM. THE LOCKIMG MEMBER IS FORMED WITH AN APERATURE FOR RECEIVING THE KEY. THE LOCKING MEMBER HAS A KEY ENGAGING PORTION AT ONE END OF THE APERTURE. A SECOND PORTION IS FORMED AT THE OTHER END OF THE APERTURE AND IS ADAPTED TO BE MOVED BY THE SPRING INTO A LOCK RECESS IN THE BARREL. WHEN A KEY IS INSERTED, THE SECOND PORTION IS MOVED OUT OF THE LOCK RECESS SO THAT THE CYLINDER CAN BE TURNED. IN A SECOND EMBODIMENT, THE SPRING AND THE LOCKING MEMBER ARE FORMED IN ONE PIECE FROM WIRE. THE SPRING IS PERFECTLY U-SHAPED. THE KEY ENGAGING PORTION OF THE LOCKING MEMBER IS PERFERABLY IN THE FORM OF A FINGER BENT LATERALLY THEREFROM. THE SECOND PORTION OF THE LOCKING MEMBER PERFERABLY COMPRISES A U-SHAPED BEND FORMED THEREIN.
Inventors
- 👤 Fred N Schmidt
Bibliographic Details
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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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |