Data entry switch

Details Data entry switch Data entry switch

1983-05-04

1985-01-29

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 16A, 200159B, H01H 900, H01H 1350, H01H 1500

Patent

active

044968035

ABSTRACT:
A new and improved switch incorporating an integral contact and return spring element for use in data entry keyboards is disclosed. The unitary contact and return spring element includes a spring member and a contact member. At rest, only the spring member contacts the underlying circuit board at a first terminal. If the spring contact is compressed a suitable distance, however, the contact member contacts a second portion of the circuit board to complete a circuit between the first and second terminal. The unitary contact and return spring element may include a plurality of spring contact members overlying an equal number of circuit board terminals. The use of multiple spring and contact elements allows use of double-pole, double-throw and double-pole, break-before-make embodiments.

REFERENCES:
patent: Re30923 (1982-05-01), Durkee et al.
patent: 3780237 (1973-12-01), Seeger, Jr. et al.
patent: 3809838 (1974-05-01), Coppola
patent: 3857008 (1974-12-01), Van Der Donk
patent: 3941964 (1976-03-01), Yoder
patent: 3973091 (1976-08-01), Kaminski
patent: 4000389 (1976-12-01), Misson et al.
patent: 4129763 (1978-12-01), Murata
patent: 4418252 (1983-11-01), Daigle

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