Single-phased compact linear electromagnetic actuator

Details Single-phased compact linear electromagnetic actuator Single-phased compact linear electromagnetic actuator

1990-01-18

1992-08-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Reciprocating

335272, 360105, H02K 1316, G11B 555, G11B 2112

Patent

active

051361949

ABSTRACT:
A compact electromagnetic actuator having at least one stable position in the absence of current and an area of constant torque or force under a constant current. The actuator includes a movable member having at least one thin portion magnetized normal to the displacement direction thereof, as well as a stator structure defining an air gap therebetween. The stator structure includes first and second magnetic circuits separated by an air gap. The first magnetic circuit includes at least one energization electric coil and polar portions. At least one of the polar portions has a side bevelled strip inducing an adjustment for displacements near limit-stop of the movable member.

REFERENCES:
patent: 3536941 (1970-10-01), Eaton et al.
patent: 4500827 (1985-02-01), Merritt et al.
patent: 4924123 (1990-05-01), Hamajima et al.
patent: 4937481 (1990-06-01), Vitale
patent: 4945269 (1990-07-01), Kamm
patent: 4985652 (1991-01-01), Oudet et al.

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