Lock arrangement
US4922737A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Sep 20, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8027
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lock arrangement which includes a lock casing (5), a key-operated cylinder lock (1) mounted on one side of the casing, and a knob or finger-turn mechanism (7-10) mounted on the other side of the casing, this knob or finger-turn mechanism being effective in activating a lock mechanism activator device, such as a follower (6) located in the lock casing (5), through the intermediary of a cylinder-lock dogging element (4) and a knob dogging element (8). The cylinder-lock dogging element (4) and the knob dogging element (8) are axially movable and are in end-to-end connection with one another. When the knob or finger-grip is turned to secure the lock, the knob dogging element is moved axially in a direction which causes the cylinder-lock dogging element also to move in its axial direction, to a position which prevents a standard key from being inserted fully into the cylinder lock. A specially configured management key, however, can be inserted into the cylinder lock for appropriate manipulation of the lock components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.