Vehicle use-locking and unlocking system

Details Vehicle use-locking and unlocking system Vehicle use-locking and unlocking system

1986-04-10

1989-03-07

Caldwell, Sr., John W.

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 70257, 180287, 307 102, G06F 704

Patent

active

048110132

ABSTRACT:
An external controller embodied in a portable card communicates by wireless signal with a controller mounted internally of a vehicle to control locking and unlocking operations of the vehicle doors in response to coincidence between codes respectively stored in the internal vehicle controller and the external controller, and manually entered through door switches mounted externally of the vehicle. Such door opening operation may be performed even with the portable card unintentionally left in the vehicle.

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patent: 4240516 (1980-12-01), Henderson et al.
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patent: 4486806 (1984-12-01), Mochida et al.
patent: 4509093 (1985-04-01), Stellberger
patent: 4670746 (1987-06-01), Taniguchi et al.
patent: 4672375 (1987-06-01), Mochida et al.
patent: 4688036 (1987-08-01), Hirano et al.

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