Full travel keyboard

Details Full travel keyboard Full travel keyboard

1983-01-24

1985-05-07

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200340, H01H 1370

Patent

active

045159998

ABSTRACT:
A full travel membrane keyboard is presented having membrane switches with an elastomeric layer between the membrane switching array and upper mechanical elements of the key, the elastomeric layer serving to evenly distribute actuation forces, contribute to the sensation of pretravel and provide the sensation of overtravel. The assembly results in reduced cost and reduced number of components.

REFERENCES:
patent: 3699294 (1972-10-01), Sudduth
patent: 3780237 (1973-12-01), Seeger, Jr. et al.
patent: 3829632 (1974-08-01), Klehm
patent: 3862382 (1975-01-01), Glaister et al.
patent: 3879586 (1975-04-01), Du Rocher et al.
patent: 3969600 (1976-07-01), Sims, Jr.
patent: 4129758 (1978-12-01), Gilano et al.
patent: 4251697 (1981-02-01), Rico Gonzalez
patent: 4439646 (1984-03-01), Bouvrande

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