Door lock position sensor
US4814557A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1047
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a door lock having a housing and a latch plate which is pivotally connected to the housing through a pivot shaft, there is arranged a position sensor for detecting an angular position of the latch plate. The sensor comprises a rotary switch securely connected to the housing, the rotary switch having a rotating shaft which causes ON and OFF conditions of the switch upon rotation thereof; and a link mechanism operatively arranged between the rotating shaft and the pivotal latch plate so that the pivotal movement of the latch plate induces a simultaneous pivotal movement of the rotating shaft of the switch. The rotary switch is placed at a position other than a position where an axis of the pivot shaft is placed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.