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Primary Examiner: Scott, James R.
Assistant Examiner:
Attorney: Lettvin; Norman, Geren; Gerald S.

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Title: Flexible pressure sensitive switch actuator module adaptable to a keyboard surface having fixed contact array

Abstract: A flexible, self-biasing switching element is disclosed herein for closing a circuit by flexing the element from an initial non-contacting position to a second contacting position and for opening the circuit by releasing the element and permitting it to return to a non-contacting position from the contacting position. The element includes a flexible non-conductive substrate having on one side thereof a plurality of spaced conductive contacts or areas. A two-sided pressure sensitive adhesive film for mounting the element is die cut and applied to the substrate in a manner so as to surround the conductive contact areas. The adhesive film provides an insulating medium between the contact points so as to prevent transmission of current between the contact points.


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Inventors: Riniker, James P. (Sparta, WI, US)

Application Number: 620955
Filing Date: 1975-10-09
Publication_date: 1977-07-12
Assignee: Northern Engraving Company, Inc. (Sparta, WI)
Primary Class(es): 200/5A 200/294, 200/308, 200/329, 200/512
Other Classes:
US Patent Ref:
3538389Nov, 1970Levesque et al.174/68.
3591749Jul, 1971Comstock200/308.
3627927Dec, 1971Schmitz et al.200/159.
3718791Feb, 1973Szablowski200/86.
3732389May, 1973Kaelin et al.200/159.
3769869Nov, 1973Nelso, Jr.200/159.
3811025May, 1974Bach200/317.
3860771Jan, 1975Lynn et al.200/5.
3862382Jan, 1975Glaister et al.200/5.
3886012May, 1975Slater200/5.

Other Refs: Other References: 184 USPA 707, Circuit-Stik, Inc. et al.