Key system for a vehicle

Details Key system for a vehicle Key system for a vehicle

1991-02-20

1992-05-26

Levy, Stuart S.

Registers

Coded record sensors

Particular sensor structure

235449, 235493, 70278, G06K 700, G06K 1906, E05B 4900

Patent

active

051170973

ABSTRACT:
A key system provided with the key, a magnetic core, a cylinder body and the magnetic field generation coil. In the key system communication is performed through magnetic coupling between the key and a cylinder so as to drive a controlled object. An inductance and capacitance resonance (LC) circuit having intrinsic resonance points as key information is mounted in the head of the key. The magnetic core is secured to the outside circumferential surface of a rotor at the key insertion hole thereof so as to form a magnetic circuit in cooperation with the key when the key is inserted into the key insertion hole.

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patent: 4686358 (1987-08-01), Secuinger et al.
patent: 4810861 (1989-03-01), Herriott et al.
patent: 4918955 (1990-04-01), Kimura et al.
patent: 4937437 (1990-06-01), Ferguson
patent: 5003801 (1991-04-01), Stinar et al.

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