Click-action membrane switch unit

Details Click-action membrane switch unit Click-action membrane switch unit

1992-08-25

1994-03-15

Recla, Henry J.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200521, 200310, H01H 110

Patent

active

052947629

ABSTRACT:
A click-action membrane switch unit comprises a flexible base film having two surfaces, flexible circuits formed on at least one of the two surfaces of the base film and having interdigitating electrode contacts, a resist film formed on the flexible circuits and having a window in the region of the electrode contacts, a dome-shaped click spring made of electrically conducting material and having an edge placed on the circuits, and a layer fixed to the other surface of the base film and having an opening formed in the portion of the layer which aligns with the click spring.

REFERENCES:
patent: 4046981 (1977-09-01), Johnson et al.
patent: 4463234 (1984-07-01), Bennewitz
patent: 4501938 (1985-02-01), Kawauchi
patent: 4618754 (1986-10-01), Gross
patent: 5144104 (1992-09-01), Bedoya

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