Self-heated solenoid

Details Self-heated solenoid Self-heated solenoid

1980-03-20

1981-12-22

Michalsky, Gerald A.

Valves and valve actuation

With correlated flow path

With mounting or support

137341, 137375, 335268, F16K 4900, F16K 3106, H01F 716

Patent

active

043067042

ABSTRACT:
A solenoid comprises two coils wound on a common axis and a core within the coils which is supported for movement along the axis. Direct currents are applied substantially continuously to the two coils for resistively heating the solenoid to a temperature substantially above the ambient temperature. The direct currents are applied in the same direction to the two coils to produce additive magnetomotive forces when it is desired to energize the solenoid and in opposite directions to the two coils to produce subtractive magnetomotive forces which tend to cancel, when it is desired that the solenoid be in its unenergized condition.

REFERENCES:
patent: 2069003 (1937-01-01), Beman
patent: 2084680 (1937-06-01), Grosswege et al.
patent: 2152524 (1939-03-01), Miller
patent: 2824922 (1958-02-01), Jennings
patent: 3022400 (1962-02-01), Ahlefeldt
patent: 3148694 (1964-09-01), Casey et al.

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