High security locking mechanism
US3996774A · kind A · utility
42Cited by
10References
2Claims
0Family size
Inventor
Key dates
| Filing date | Feb 24, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Feb 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7921
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A high security lock to secure the eyes of a hasp and keeper. The lock is of a short cylindrical shape with a rear cavity to receive and enclose the hasp and keeper eyes, and contains a locking bolt to engage such eyes. The lock and the hasp and keeper assembly interact to give high security. The lock encloses and closely embraces the eyes of the hasp and keeper and lies close against the pads of the hasp and keeper. Shroud plates overlying the pads closely surround the rear edge of the lock. The shrouds and plates of the hasp meet those of the keeper at a separation plane offset from that of the eyes and of the door and its jamb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.