Valves and valve actuation – Permanent or constantly energized magnet actuator
Patent
1980-04-15
1984-09-04
Rosenthal, Arnold
Valves and valve actuation
Permanent or constantly energized magnet actuator
251129, 251141, F16K 3108
Patent
active
044693044
ABSTRACT:
A pulse actuated solenoid valve having a valve body and cover with a valve plunger formed as a permanent magnet is biased in a closed position to prevent flow through. Said solenoid valve has an electromagnetic coil and core placed adjacent the valve plunger to place the plunger in an open position, permitting flow through said solenoid valve and for releasing it to its closed position. The electromagnetic coil has one end connected to the pole of a single-pole, double-throw switch, while the other end of the electromagnetic coil is connected to one side of a capacitor. One terminal of the double-throw switch is connected to the other side of the capacitor, while the other terminal is connected to one terminal of a power source; the other side of the capacitor is also connected to the other terminal of the power source. Means are provided to time the movement of the double-throw switch from one position to the other. Both A.C. and D.C. power sources, and control means, are provided for charging a capacitor through an electromagnetic coil in one direction and having the same charge be discharged through the electromagnetic coil in the opposite direction when desired.
The mating faces of the valve plunger and core are provided with a groove or vent to prevent hydraulic locking therebetween.
REFERENCES:
patent: 3203447 (1965-08-01), Bremner et al.
patent: 3368788 (1968-02-01), Padula
patent: 3379214 (1968-04-01), Weinberg
patent: 3955795 (1976-05-01), Neely
patent: 4056255 (1977-11-01), Lace
McCarthy Jack N.
Rosenthal Arnold
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