Keyboard with removable modular keys

Details Keyboard with removable modular keys Keyboard with removable modular keys

1985-05-03

1986-07-22

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Actuators

200159B, 200295, H01H 908

Patent

active

046021388

ABSTRACT:
A contact-type keyboard comprises a plurality of modular keys and a support panel (11) provided with openings (12) in which the keys are inserted. Each key is provided with a pair of resilient tongue portions (51, 52) which lock it to the panel (11) and which are deformable to permit the key to be easily removed from the panel (11). Each key further comprises a resilient system formed by a dome-shaped spring and a coil spring, which are interposed between a movable actuator and the subjacent conducting parts of an electrical circuit.

REFERENCES:
patent: 3773998 (1973-11-01), Seeger, Jr. et al.
patent: 3950627 (1976-04-01), Murata et al.
patent: 4117292 (1978-09-01), Hayes et al.
patent: 4170104 (1979-10-01), Yamagata
patent: 4386252 (1983-05-01), Kondo et al.
patent: 4390765 (1983-06-01), Sado et al.
patent: 4439646 (1984-03-01), Bouvrande
patent: 4453061 (1984-06-01), Tamura

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