Lock device
US4011742A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1975 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | Aug 4, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7316
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock device comprises a latch bolt assembly movably mounted for movement from a closed position to a open position. A combination lock system is operatively connected to the latch bolt for retentively engaging the latch bolt against movement to its open position, and for releasing the latch bolt assembly in response to a predetermined rotational movement of a dial on the lock mechanism. A handle or knob is operatively connected to the latch for opening the latch whenever the lock mechanism has released the latch. A reset mechanism is connected to the knob and also engages the lock mechanism so as to reset the lock mechanism each time the handle opens the latch whereby the lock mechanism will automatically move into retentive engagement with the latch bolt after the latch bolt has been opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.