Panel keyboard with air permeable spacer

Details Panel keyboard with air permeable spacer Panel keyboard with air permeable spacer

1981-06-05

1983-12-20

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200306, 200 86R, H01H 1370

Patent

active

044219580

ABSTRACT:
A membrane switch assembly having an apertured air permeable spacer positioned between a pair of printed circuits. Air may diffuse through the permeable material into and out of the regions which define individual switch cavities during operation.

REFERENCES:
patent: 2954446 (1960-09-01), Wikkerink
patent: 3627927 (1971-12-01), Schmitz et al.
patent: 3898421 (1975-08-01), Suzumura

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