Communications: electrical – Audible indication – Ultrasonic pest control
Patent
1974-06-28
1977-04-05
Caldwell, John W.
Communications: electrical
Audible indication
Ultrasonic pest control
200314, G09F 914
Patent
active
040165612
ABSTRACT:
A switch comprises a housing and a shaft movable into and out of the housing with two circuit paths carried by the housing and adapted to be interconnected only during movement of one of the paths across the other path. Means are provided for moving the one path across the other path; in one embodiment, this means comprises a cam and bevel arrangement carried by the shaft.
REFERENCES:
patent: 3272951 (1966-09-01), O'Brien
patent: 3274354 (1966-09-01), Stevens
patent: 3560689 (1971-02-01), Matson
patent: 3567888 (1971-03-01), Long
patent: 3598948 (1971-08-01), Bowen
Hoskins Daniel B.
Parker Ralph L.
Caldwell John W.
TRW Inc.
Wannisky William M.
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