Solenoid having a plunger non-fixedly adjoining an end of the ar

Details Solenoid having a plunger non-fixedly adjoining an end of the ar Solenoid having a plunger non-fixedly adjoining an end of the ar

1985-03-27

1987-02-24

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335262, 335265, H01K 708

Patent

active

046460438

ABSTRACT:
A solenoid is disclosed which uses a plastic coil bobbin as the bearing surface for the armature, the body of which extends coaxially through the central cylindrical cavity of the bobbin. Extending into this cavity, from the end opposite the armature, is a plug which is rigidly fixed to the bobbin by an outer housing that surrounds the bobbin and has a skirt which captures a flanged end of the plug. A plunger that extends through an axial bore in the plug floats freely, coaxially of the bobbin. The interior end of the plunger has an enlarged head that is received within a bore in the armature body. A bias spring is situated between this plunger head and a counterbore in the plug.

REFERENCES:
patent: 1817592 (1931-08-01), Sokoloff
patent: 2405396 (1946-08-01), Bazley
patent: 3713059 (1973-01-01), Tada
patent: 3735302 (1973-05-01), Eckert

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