Anti-theft locking device
US4221025A · kind A · utility
54Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Dec 20, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7057
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A locking device which includes a housing, a spring biased insert, arcuately spaced retaining balls, and cup means which is securely mounted in the housing and retains the balls and the lower end of the insert. The tapered side walls of the cup means provide a cam surface upwardly along which the balls can move when a pin is inserted in the lock. When the pin is released the balls tightly frictionally engage the pin under the bias of the spring, thereby preventing unauthorized removal of the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.