Lock cylinder
US5339663A · kind A · utility
7Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7718
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock cylinder which can be actuated from one side by a knob and from the opposite side by a key, has a locking-member hub and a cylinder core which has tumblers adapted to be positioned by the key. A free passage is provided between a coupling member and a locking-member hub so that the coupling member entrains the locking-member hub only in one direction of rotation and can be freely turned back from the entrainment end position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.