Solenoid with armature biased towards the rest position with two

Details Solenoid with armature biased towards the rest position with two Solenoid with armature biased towards the rest position with two

1992-02-24

1993-10-12

Picard, Leo P.

Electrical resistors

Incased, embedded, or housed

Terminal or lead extends into end of elongated casing or...

335260, 335270, H01F 708, H01F 713

Patent

active

052529380

ABSTRACT:
A solenoid having an armature movable with respect to a stator from a rest position to an energized position when a coil is energized. Two return devices, for instance helical compression springs, urge the armature to return to the rest position. Two slidable sleeves are provided between stator and the armature. Ingress of dirt into the armature may jam either sleeve with respect to the stator or the armature without jamming the solenoid, since the other return devices/sleeve combination will still permit movement of the armature.

REFERENCES:
patent: 2753470 (1956-07-01), Armstrong
patent: 2840769 (1958-06-01), Currie
patent: 2859392 (1958-11-01), Van Ryan et al.
patent: 3200222 (1965-08-01), Hawkins
patent: 3265941 (1966-08-01), Lory
patent: 4267897 (1981-05-01), Takeshima
patent: 4540965 (1985-09-01), Hattori et al.
patent: 4579146 (1986-04-01), Tsuru et al.
patent: 4635683 (1987-01-01), Nielsen
patent: 4755781 (1988-07-01), Bogner
patent: 4983941 (1991-01-01), Tanaka

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