Magnetically operated actuator

Details Magnetically operated actuator Magnetically operated actuator

1986-03-31

1987-04-14

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 81, H01F 708

Patent

active

046582304

ABSTRACT:
A magnetically operated actuator which comprises a generally elongated operating element displaceable between first and second positions, an electromagnet assembly for driving the operating element to displace between the first and second positions and comprising an iron core and a solenoid coil disposed around the iron core, a permanent magnet assembly rigidly mounted on the operating element and having a pair of opposite poles different in polarity from each other and having a magnetic field which is developed between the opposite poles, and a stopper member for restricting the stroke of movement of the operating element between the first and second positions. The electromagnet assembly is fixedly supported in position with one of the opposite ends of the iron core situated in the magnetic field developed between the poles of the permanent magnet assembly. The first and second positions are located in the vicinity of the opposite poles of the permanent magnet assembly.

REFERENCES:
patent: 4560966 (1985-12-01), Nagamoto et al.

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