Membrane keyboard switch mounting

Details Membrane keyboard switch mounting Membrane keyboard switch mounting

1984-05-29

1986-08-12

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200306, H01H 1370

Patent

active

046058281

ABSTRACT:
A multilayer membrane switch structure is disclosed wherein the flexible membrane is fixedly attached to a support frame member by a pattern of adhesive regions, the regions positioned in locations corresponding to the switch locations of the structure. The adhesive engagement of the bottom surface of the membrane structure stabilizes the bottom electrical contact and, at the same time, leaves open regions between the adhesive regions which will accommodate air which is exhausted from the switch cavity through a hole formed in the bottom layer of the multilayered switch structure into communication with the open regions between the adhesive regions. Thus, the open regions act to exhaust the air in a switch cavity when the switch is activated.

REFERENCES:
patent: Re31332 (1983-08-01), Larson
patent: 3860771 (1975-01-01), Lynn et al.
patent: 4046975 (1977-09-01), Seeger, Jr.
patent: 4118611 (1978-10-01), Harris
patent: 4362911 (1982-12-01), Sears et al.
patent: 4365130 (1982-12-01), Christensen
patent: 4373122 (1983-02-01), Frame
patent: 4375018 (1983-02-01), Petersen
patent: 4415780 (1983-11-01), Daugherty
patent: 4485279 (1984-11-01), Nakamura
patent: 4489227 (1984-12-01), Lamarche

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