Secured locking device
US5062669A · kind A · utility
16Cited by
15References
15Claims
0Family size
Inventors
Key dates
| Filing date | Jul 16, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Jul 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0869
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock mechanism for safely locking doors, such as trailer-tractor vehicle doors and for controllably releasing same including a reciprocal or rotatable locking member such as a sliding bolt movable up through the floor of a trailer to a first locking position wherein a door is positively locked and a release position wherein the vehicle door is released with the locking member housed in a tamper-proof box with a pivotal panel that is held shut by a latch released by a latch operator means which is activated by an air drive that can be primarily operated only when connected to the air pressure system of a vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.