Keyless padlock
US3966247A · kind A · utility
7Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1973 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/496
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A keyless padlock seal for shipping containers, highway trailers, railroad box cars and the like, comprising a lock body and a hasp which is spring-locked to said lock body. The hasp cannot be removed from the body without destruction of either the hasp or the body. A code-marked seal may be provided on the lock body and secured thereto in such manner that it cannot be removed or replaced without at least partial destruction of the padlock and evidence of tampering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.