Rotary solenoid

Details Rotary solenoid Rotary solenoid

1978-01-26

1979-06-05

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335228, H01F 708

Patent

active

041575210

ABSTRACT:
A rotary solenoid has a substantially constant clearance air gap, adapted to proportional operation, includes a generally cup-shaped case of ferromagnetic material, an energizing coil is received in the case adjacent, an annular stator member is received in the open end of said case adjacent said coil and has at least one arcuately formed pole member, an armature has sector-shaped poles corresponding in arcuate spacing and in number to the stator poles, a plate is carried on one end of said armature and defines with the case at least one pair of cooperating non-inclined, arcuately-extending ball bearing recesses, and can conveniently define the extent of rotation of said armature.

REFERENCES:
patent: 3027772 (1962-04-01), Smith
patent: 3264530 (1966-08-01), Leland et al.
patent: 3743987 (1973-07-01), Yost

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