Sector motor having latching means for rotor in multiple positio

Details Sector motor having latching means for rotor in multiple positio Sector motor having latching means for rotor in multiple positio

1983-02-17

1985-02-19

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335254, H01V 708

Patent

active

045008612

ABSTRACT:
A sector motor has a rotor which is rotatable to one of three positions in a housing. The rotor carries field magnets surrounding stationary armature poles carried by the housing. An arcuate 90.degree. slot in one end of the housing receives an arcuate 45.degree. arm projecting from the rotor thereby limiting the rotor to a total angular rotation of 90.degree.. Spaced latching magnets coact in mutual repulsion or attraction or both to latch the rotor at either end of rotor rotation. The motor's inherrent magnetic restoring force assisted by a magnetic detent carried by the housing and rotor and located midway between opposite ends of the 90.degree. slot latch and prevent vibration of the rotor in a central position between opposite ends of its range of rotation.

REFERENCES:
patent: 3375512 (1968-03-01), Watkins et al.
patent: 3553619 (1968-08-01), Skrobisch
patent: 3735303 (1973-05-01), Harden
patent: 3855560 (1974-12-01), Ward

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