H - Electricity
01
H
340/137
H01H 35/02 (2006.01)
Patent
CA 1234895
SWITCH DEVICE Abstract of the Disclosure A contactless electrical switch has 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.
458563
Greenwood John C.
Hodges Robert J.
Sheppard Robert
Greenwood John C.
Hodges Robert J.
Sheppard Robert
Smart & Biggar
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