Electromagnetic actuator

Details Electromagnetic actuator Electromagnetic actuator

1986-05-22

1987-12-29

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335281, 335266, H01F 708

Patent

active

047163933

ABSTRACT:
An electromagnetic actuator includes a core structure defining a central pole piece and an annular pole piece surrounding the central pole piece in spaced relationship. A winding is provided which when energized causes the pole faces of the pole pieces to assume opposite magnetic polarity to draw an armature towards the pole faces. A further winding is located about the annular pole piece and an annular core component surrounds the annular pole piece in spaced relationship and extends beyond the pole faces to form a radial air gap 23 with the armature.

REFERENCES:
patent: 2992304 (1961-07-01), Andrews
patent: 4438420 (1984-03-01), Leiber et al.

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