Membrane type keyboard with improved multiple key arrangement

Details Membrane type keyboard with improved multiple key arrangement Membrane type keyboard with improved multiple key arrangement

1996-07-02

1998-06-09

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200343, 200345, 200517, H01H 1370

Patent

active

057638411

ABSTRACT:
In a keyboard which drives membrane switches by selectively depressing key tops, hinge portions are formed integrally with a housing in an array of hinge receiving holes made therein in correspondence with a desired array of key tops, a top panel having openings corresponding to the hinge receiving holes is bonded to the top of the housing, and the key tops are each disposed to cover the corresponding opening and the entire length of the corresponding hinge portion and is fixedly engaged with the free end of the hinge portion through the opening. By the application of pressure to and its removal from each key top, the lower end of the free end of the corresponding hinge portion operates to make and break the underlying membrane switch.

REFERENCES:
patent: 4351988 (1982-09-01), Allbright
patent: 4582967 (1986-04-01), Brumit et al.
patent: 5144103 (1992-09-01), Suwa
patent: 5340955 (1994-08-01), Calvillo et al.
patent: 5430263 (1995-07-01), English et al.
patent: 5481074 (1996-01-01), English

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