Telephone lock guard
US5862216A · kind A · utility
0Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M17/026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A lock guard for use in connection with a lock assembly having a bolt action mechanism comprises a rigid plate bounded by upper and lower walls, the plate fitting against a side of the bolt mechanism, the side walls embracing and surround the top and bottom edges of the mechanism. A front panel embraces and covers a bolt plate to be engaged by the bolt. The guard prevents access to the lock mechanism and bolt plate. The lock assembly is of particular utility in connection with key lock units used in coin-operated pay telephones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.