Re-keyable lock with improvements for preventing incomplete re-keying
US7975518B2 · kind B2 · utility
6Cited by
16References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Aug 3, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7734
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A re-keyable cylinder lock includes a plug inserted into a lock housing and having a plurality of radial holes connected to a key hole. The lock housing has a first engaging element provided in an inner surface thereof. A limit unit has a second engaging element and is inserted into one of the radial holes located at a predetermined depth of the key hole. The first engaging element engages the second engaging element to limit the plug from rotating when a replacement key which is inserted into the key hole for re-keying does not reach a predetermined depth of the key hole. Incomplete re-keying can therefore be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.