KEYLESS VEHICLE DOOR LATCH SYSTEM WITH POWERED BACKUP UNLOCK FEATURE

• US 20180051493A1
• Filed: 11/01/2017
• Published: 02/22/2018
• Est. Priority Date: 08/26/2014
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Krishnan, Venkatesh, Puscas, Livianu Dorin
• Granted Patent: US 10,526,821 B2
• Time in Patent Office: Days
• CPC Class Codes: B60R 25/245 where the antenna reception area plays a role
• CPC Class Codes: B60R 25/403 Power supply in the vehicle
• CPC Class Codes: E05B 81/56 Control of actuators
• CPC Class Codes: E05B 81/80 characterised by the power supply; Emergency power operation
• CPC Class Codes: E05B 81/82 using batteries other than the vehicle main battery
• CPC Class Codes: E05B 81/86 using capacitors
• CPC Class Codes: G07C 2009/00634 Power supply for the lock
• CPC Class Codes: G07C 2009/00769 with data transmission performed by wireless means
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks

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.

Claims