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US 4,987,277 AGranted
Normally closed pressure-actuated switch
AssigneeTapeswitch Corporation of America
InventorEdward W. Duhon
Life of this patent
Estimating the term…
Abstract
A normally-closed electrical switch having a plurality of electrically conductive contacts normally arranged in overlapping electrical communication. A preferred embodiment of the present invention also comprises a pressure directing mechanism for directing and actuating pressure to specific portions of the electrically conductive elements. The normally-closed electrical switch of the present invention interrupts an electrical circuit in response to an applied pressure.
Claims23
A normally-closed electrical switch comprising:
- a plurality of electrically conductive contacts normally arranged in overlapping electrical communication,
- wherein said contacts are separable in response to an applied pressure which thereby interrupts said electrical communication.
A normally-closed pressure-sensitive electrical switch comprising:
- a plurality of electrically conductive contacts arranged in overlapping electrical communication, and
- at least one pressure directing member disposed above a contact for directing an applied pressure to said contact thereby interrupting said electrical communication.
Dependencies are inferred from the claim text.