Cylinder lock with changeable keyway
US5088306A · kind A · utility
34Cited by
32References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8595
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cylinder lock is capable of providing a changeable keyway by means of elongated warding members which are insertable into a keyway access slot which has a cross-sectional configuration larger than for a desired key. There may be one or more warding members which are insertable into the plug and extend the length of the keyway access lot to define the cross-sectional area of a desired key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.