Ignition switch key cylinder

Details Ignition switch key cylinder Ignition switch key cylinder

1996-10-03

2000-08-01

Zimmerman, Brian

Registers

Coded record sensors

Particular sensor structure

34082531, 340426, H04Q 100

Patent

active

060954159

ABSTRACT:
A key identifying for an ignition switch key cylinder. The apparatus has a lock member that is unlocked by the key including a signal transmitter outputting an identifying signal. A computer determines an appropriate key for an unlocking use based on the identifying signal. The lock member includes a rotor being arranged to be rotated by the key, a case for accommodating the rotor, a cap secured to the case to detachably hold the rotor in the case and an antenna member receiving the identified signal from the transmitter and providing the determining means with information indicative of the identified signal, said antenna means being located in a position relatively constant with respect to the case.

REFERENCES:
patent: 4918955 (1990-04-01), Kimura
patent: 5023605 (1991-06-01), McColl
patent: 5311757 (1994-05-01), Spahn
patent: 5373718 (1994-12-01), Schwerdt
patent: 5433096 (1995-07-01), Janssen et al.
patent: 5461386 (1995-10-01), Knebelkamp
patent: 5532522 (1996-07-01), Dietz
patent: 5724028 (1998-03-01), Prokup

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