Electric switch and actuator for an antenna drive system

Details Electric switch and actuator for an antenna drive system Electric switch and actuator for an antenna drive system

1978-04-26

1979-05-08

Hart, Ro E.

Electricity: circuit makers and breakers

Limit switch

H01Q 110

Patent

active

041538250

ABSTRACT:
A dual snap-action electric switch is used in an antenna drive to stop antenna movement when a predetermined resistance to longitudinal movement is encountered. The switch has two actuator arms operated by actuator tabs maintained in spaced relation by a spring. The actuator tabs are movable longitudinally in response to longitudinal movement of an electric motor driven worm shaft to open one or the other of the switches to stop the motor, such as when full extension or retraction of the antenna is reached.

REFERENCES:
patent: 3616884 (1971-11-01), Balz
patent: 3703673 (1972-11-01), Balz
patent: 3720295 (1973-03-01), Balz
patent: 3893125 (1975-07-01), De Bellomayre
patent: 3931484 (1976-01-01), Chace
patent: 3959614 (1976-05-01), Graninger

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