Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1986-03-03
1987-09-01
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
310339, 310319, 307149, H01L 4108
Patent
active
046911170
ABSTRACT:
A contactless electrical switch includes a switch element comprising a piezo-resistive transducer (25). Coded toothed cams (16) operated via a shaft (14) deflect the transducer (25) causing corresponding changes in stress and hence resistance. The output of the transducer is amplified and fed to logic circuitry which determines a corresponding current path.
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Greenwood John C.
Hodges Robert J.
Sheppard Robert
International Standard Electric Company
Ip Shik Luen Paul
Peterson T. L.
Shoop Jr. William M.
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