Key device and a detector device for use therewith

Details Key device and a detector device for use therewith Key device and a detector device for use therewith

1987-08-06

1989-10-10

Wolfe, Robert L.

Locks

Operating mechanism

Key

70277, 70411, E05B 1900

Patent

active

048723290

ABSTRACT:
A key device which comprises a base (11) having seven substantially circular apertures (12,13,14,15, 16,17,18) therein. Each aperture (12-18) is adapted to receive a respective element (12a-18a). The base (11) and the elements (12a-18a) are made from a non-electrically conductive material. Each of the elements (12a-18a) has seven predetermined locations on sites (21-27) adapted for the receipt of a metal pin. Thus the electrical characteristic of each site (21-27) may be altered by the presence or absence of the metal pin. A key device can be assembled by a user having a particular combination of pins present. The combination of the pins present together with the orientation of the key device when presented to a detector means, which is adapted and programmed to determine the presence or absence of a pin at each site, may be used to actuate, for example, a lock.

REFERENCES:
patent: 3403380 (1968-09-01), Welch
patent: 3793565 (1974-02-01), Smith
patent: 3955388 (1976-05-01), Stackhouse
patent: 4177657 (1979-12-01), Aydin
patent: 4411144 (1983-10-01), Aydin
patent: 4534194 (1985-08-01), Aydin

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