Solenoid devices

Details Solenoid devices Solenoid devices

1977-04-19

1978-12-26

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

308 26, 335255, H01F 716

Patent

active

041318668

ABSTRACT:
A solenoid device includes a cylindrical armature movable within a core tube the tube and armature being formed from magnetisable material. The armature is smaller in diameter than the interior diameter of the tube and a pair of axially spaced recesses are defined between the tube and the armature, each recess accommodating a circumferentially extending cylindrical member. The members serve to locate the armature within the tube and as relative axial movement occurs the members roll about their circumferential axes. The dimensions of the various parts are such that the members are nipped slightly when the device is assembled.

REFERENCES:
patent: 3318642 (1967-05-01), Peterson
patent: 3510814 (1970-05-01), Nordfors

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