Electrically and mechanically activatable lock mechanism
US5148691A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Dec 27, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock mechanism of the narrow-profile-lock kind comprises a pivotal latch hook (4) which can be manipulated by a key via a cylinder-lock follower (19), a rack element (18), a follower (17) and a spring-activated drive element (6). The lock plunger can also be activated via an electric motor (11), an output shaft (10), and a worm gear (9) which is in meshing engagement with a dogging element (8) which is pivotally mounted on the same shaft (7) as the follower element (17) and has dogs or projections (8b) which enter sector-shaped slots (17b) having a figure-eight configuration. When the electric motor is started the dogging element (8) is rotated through 90.degree. and the latch hook (4) adopts its locking position. The electric motor returns immediately the dogging element (8) to its starting position, while the follower element (17) remains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.