Radio type locking/unlocking device
US7336151B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Aug 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides an automatic locking/unlocking device which locks an opening/closing body when a normal response signal is received in response to a request signal sent to a predetermined zone around a vehicle body, comprising detector for detecting that the opening/closing body is closed, wherein the request signal is sent within the vehicle compartment in response to closing of the opening/closing body before the request signal is sent to the predetermined zone around the vehicle body and if the normal response signal is received in response to this request signal, transmission of the request signal to the predetermined zone around the vehicle body is prohibited, thereby suppressing consumption of power in the portable unit and ensuring a secure automatic locking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.