System with a lock and a key which cooperate according to the tr

Details System with a lock and a key which cooperate according to the tr System with a lock and a key which cooperate according to the tr

1997-02-24

2000-11-21

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 3408257, 70278, 343866, 343867, 180287, G06F 704

Patent

active

061509523

ABSTRACT:
A key and lock system has a key with an integrated transponder coil that is connected to a transponder unit, and a lock with an integrated write/read coil. The key has a key bit portion and a bow portion. When the key bit portion is inserted into an elongated aperture of a key cylinder of the lock, an axis of the write/read coil forms an acute angle with an axis of the transponder coil. The acute angle substantially differs from a zero degree angle.

REFERENCES:
patent: 4980680 (1990-12-01), Knoll et al.

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