Key sensing system

Details Key sensing system Key sensing system

1986-02-07

1987-12-29

Grimley, A. T.

Communications: electrical

Condition responsive indicating system

Specific condition

70456R, G08B 1314

Patent

active

047164000

ABSTRACT:
The present keysensor (1) includes a base (2) for placing a keyholder (4) with a magnet (7) contained and a magnetic sensor (3) installed on a reverse side thereof, thus, it is possible to facilitate the use and to employ a fixed-type keyholder.

REFERENCES:
patent: 2589349 (1952-03-01), Diefenbach
patent: 3007568 (1961-11-01), Kurland
patent: 4150350 (1979-08-01), Fong
patent: 4213110 (1980-07-01), Holce

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