Unlocking system for automobile vehicle doors and the like
US7224259B2 · kind B2 · utility
17Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | May 18, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for unlocking a key cylinderless automobile vehicle door includes a portable object having an identifier and a circuit for interrogating the object. The circuit powers the object and interrogates the object when it is outside the vehicle. The interrogating circuit supplies a signal authorizing unlocking of the door as a function of the identifier. A standby power supply, which is separate from the main power supply of the vehicle, also powers the circuit and the object. As a result, the vehicle door does not require a key cylinder while still ensuring unlocking even if the main power supply of the vehicle fails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.