Spring bolt combination lock
US4328689A · kind A · utility
14Cited by
4References
9Claims
0Family size
Inventors
Key dates
| Filing date | Dec 20, 1979 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Dec 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7316
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A combination lock having a lock housing with a spring bolt. A manually operable combination dial is provided outside the housing to operate a standard combination mechanism and a bolt retracting cam. A bolt retracting element is secured to the bolt and engageable by the bolt retracting cam when the combination mechanism is operated to a predetermined condition. By turning the dial the retracting cam is operated and the bolt is retracted. A disengagement mechanism disengages the bolt retracting element from the retracting cam, after the dial is released and the bolt is then displaced to its locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.