Rubber cone layer of a keyboard

Details Rubber cone layer of a keyboard Rubber cone layer of a keyboard

1996-04-18

1998-06-02

Berhane, Adolf

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200512, H01H 1370, H01H 110

Patent

active

057603510

ABSTRACT:
A rubber cone layer for use in a computer keyboard, having fine grains distributed over the top and bottom sides thereof to prevent sticking to the membrane circuit of the computer keyboard, and a plurality of rubber cones raised from the top side corresponding to the key switches of the computer keyboard for compression by the key switches to trigger respective contact points at the membrane circuit, each of the rubber cones having a downward plunger terminating in a conductive element and spaced above one contact point of the membrane circuit.

REFERENCES:
patent: 4354068 (1982-10-01), Sobol, III
patent: 4701579 (1987-10-01), Kurachi et al.
patent: 5246512 (1993-09-01), Seki et al.
patent: 5286937 (1994-02-01), Santo et al.
patent: 5418530 (1995-05-01), Moor et al.
patent: 5565865 (1996-10-01), So

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