Keyless vehicle door latch system with powered backup unlock feature
US9909344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jul 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00769
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A keyless door latch system for doors of motor vehicles includes a backup electrical power supply to unlock the door latch in the event the primary power supply fails, thereby eliminating the need for a lock cylinder. The latch system includes a user input device having first and second user input features. The door latch system is configured to supply electrical power from the primary electrical power supply to unlock the latch upon actuation of the first user input feature, and to supply electrical power from the backup electrical power supply to unlock the latch upon actuation of the second user input feature. The user input device may comprise a wireless portable device that generates first and second wireless signals upon actuation of the first and second user input features, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.