Molded ferromagnetic return circuit for a solenoid

Details Molded ferromagnetic return circuit for a solenoid Molded ferromagnetic return circuit for a solenoid

1986-05-15

1987-03-03

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335281, 29608, H01F 700

Patent

active

046478906

ABSTRACT:
An improved solenoid is disclosed. The improvement consists of injection molding one or more components of the magnetic return circuit of the solenoid, particularly the magnetically permeable can, from a polymer having a filler of soft magnetic material at preferably a 20-63% by volume loading level. The injection molded polymer filled solenoid has higher efficiencies than expected based on the decrease in total metal content.

REFERENCES:
patent: 3043994 (1962-07-01), Anderson et al.
patent: 3201729 (1965-08-01), Blanchi et al.
patent: 3775841 (1973-12-01), Lathouwers et al.

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