Tumbler wheel, changeable combination key lock construction
US3991596A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1976 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Jan 30, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7548
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tumbler wheel type lock mechanism for use in key locks, dial operated combination locks and the like, including plural tumbler wheels in a lock casing having gated rim portions encircling hub portions which may be adjusted to different angular positions relative to their associated rim portions. A pivoted fence lever is normally releasably latched in a raised inactive position, and a releasing spring is activated by a control cam to impact against a shoulder formation on the fence lever for releasing the latter from such latched condition and impelling it to coupled relation with the control cam when the tumbler wheels occupy a predetermined alignment whereby the lock cam can be unlocked by operation of the control cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.