Key detection switch for vehicle entry and security systems
US6859138B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Jan 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle entry and security system includes a key cylinder that is operated using a key. A first cable has one end attached to the key cylinder. A mechanical actuator is attached to an opposite end of the first cable. A second cable has one end attached to the mechanical actuator. A latch is connected to an opposite end of the second cable and releases a door or a trunk. The mechanical actuator triggers a switch when the key operates the key cylinder. A vehicle security system triggers an alarm when the door or trunk is opened without using a key fob. The vehicle security system monitors the state of the switch and prevents the alarm from being triggered when the switch is in a second state. When the key is operated a first number of times within a first period, the vehicle security system reprograms the key fob.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.