Solenoid having low-friction coating internally of the armature

Details Solenoid having low-friction coating internally of the armature Solenoid having low-friction coating internally of the armature

1984-03-01

1985-05-21

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335255, 335270, H01F 708

Patent

active

045189382

ABSTRACT:
Electromagnet solenoid with a housing in which a winding support supporting the magnet winding is arranged, having an armature which supports at least one stem and is mounted to be capable of moving to and fro within the winding support, and with end pieces terminating the housing. For guiding the armature a sleeve made of magnetic material is provided within the winding support, and said sleeve has on its surface directed towards the armature a sliding coating defining an air gap (i.e. a space free of magnetic material,) and in addition to serving for guiding the armature the said sleeve serves for redirecting magnetic flux.

REFERENCES:
patent: 4149132 (1979-04-01), Richter et al.
patent: 4278959 (1981-07-01), Nishimiya et al.

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