Push buttons

Details Push buttons Push buttons

1984-02-29

1985-09-10

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200159B, 2003023, 200 5A, H01H 1352, H01H 1306

Patent

active

045408653

ABSTRACT:
A keyboard (61) is provided with rubber (silicone) buttons (64, 66) with collapsible webs (14) connecting the buttons to a base layer (10, 40, 60). A solid finger of rubber (20) underneath each button actuates a membrane switch (23) underneath the button. Additionally or alternatively a conductive member (52) can be attached to the end of the finger (20) to make two contacts (48, 50, 56, 58). The buttons and the finger can be of any suitable section, such as round, rectangular etc., and a variety of types of membrane switches can be used.

REFERENCES:
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3932722 (1976-01-01), Obata et al.
patent: 4021630 (1977-05-01), Taylor
patent: 4347504 (1982-08-01), Murofushi et al.
patent: 4390765 (1983-06-01), Sado et al.
patent: 4491702 (1985-01-01), Kato

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