Key board switch assembly having canti-levered leaf spring conta

Details Key board switch assembly having canti-levered leaf spring conta Key board switch assembly having canti-levered leaf spring conta

1976-06-21

1978-07-04

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159A, 200275, H01H 1370

Patent

active

040990370

ABSTRACT:
A push button panel having twelve push buttons arranged in three columns of four push buttons per column. A push button panel of the type described wherein a common signal is connected to the unique combination of two out of seven circuit paths when a given push button is depressed. The panel has a minimum number of individual parts and employs lead frame techniques to facilitate fabrication of the parts in a rapid manner according to well understood procedures. A push button panel arranged to optimize the spring characteristics of the members so as to minimize the likelihood of false signals without requiring excessive force to operate the push buttons.

REFERENCES:
patent: 3600528 (1971-08-01), Leposavic
patent: 3742157 (1973-06-01), Leposavic
patent: 3777082 (1973-12-01), Hatley et al.
patent: 3800104 (1974-03-01), Lien et al.
patent: 3849611 (1974-11-01), Walker, Jr.
patent: 3858019 (1974-12-01), Muri et al.
patent: 3870840 (1975-03-01), Rivetta et al.
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 3996429 (1976-12-01), Chu et al.

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