Solenoid with retainer stop

Details Solenoid with retainer stop Solenoid with retainer stop

1984-04-12

1985-05-21

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335263, 335279, H01F 708

Patent

active

045189390

ABSTRACT:
A solenoid is provided having a simplified construction which gives precise, uniform and reliable performance. The solenoid includes a base member which supports a bobbin. The bobbin is a one-piece, integrally molded unit with a hexagonal bore that extends through its entire length and a resilient retainer or catch that extends over and partially closes the bore at one end of the bobbin but flexes to admit a plunger. The catch and a plug in the bore at the opposite end of the bobbin confine the plunger between predetermined limits. The plunger has a hexagonal cross section sized to fit closely into the bore, allowing sliding movement of the plunger in the bore and preventing rotation of the plunger. The bobbin supports a coil that produces the magnetic flux to move the plunger longitudinally in the bore of the bobbin.

REFERENCES:
patent: 2239312 (1941-04-01), Berges
patent: 2415739 (1947-02-01), Fuchs
patent: 3259811 (1966-07-01), Dunn
patent: 4262271 (1981-04-01), Bowers

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