Wide-angle actuator

Details Wide-angle actuator Wide-angle actuator

1982-07-28

1984-07-24

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335272, H01F 714

Patent

active

044620144

ABSTRACT:
A limited-rotation actuator in which the rotor pole faces and corresponding stator pole faces are spaced apart along the axis of rotation, the rotor pole faces are permeably connected by a flux path having an axial component through the rotor, and the rotor and stator pole faces each subtend an angle of between about 90.degree. and about 180.degree. around the axis. The invention enables wide angle excursions of the rotor and inexpensive fabrication.

REFERENCES:
patent: Re26749 (1970-01-01), Montagu
patent: 2289227 (1942-07-01), Walker
patent: 2364656 (1944-12-01), Price
patent: 2987657 (1961-06-01), Buchtenkirch et al.
patent: 3434082 (1969-03-01), Montagu
patent: 3624574 (1969-11-01), Montagu
patent: 3753180 (1973-08-01), Sommer
patent: 3970979 (1976-07-01), Montagu
patent: 4103191 (1978-07-01), Kawamura et al.
Mizoshita et al., "Mechanical and Servo Design of a 10 Inch Disk Drive", IEEE Transactions on Magnetics, vol. MAG-17, No. 4, Jul., 1981, pp. 1387-1391.
Winfrey et al., "Design of a High Performance Rotary Positioner for a Magnetic Disk Memory", IEEE Transactions on Magnetics, vol. MAG-17, No. 4, Jul., 1981, pp. 1392-1395.

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