Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Patent
1977-02-28
1978-11-07
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
251176, F16K 3106
Patent
active
041241924
ABSTRACT:
A valve assembly including a housing having an inlet passage in communication with an outlet passage with valve seat members disposed in the passages on opposite sides of the lower end of a plunger. The plunger has a bore therein for receiving a pair of valve sealing elements which are biased apart by a spring for engagement with the valve seat members. The plunger is biased to the closed position by a spring and is moved to the open position by the magnetic field generated by the coil of a solenoid. The solenoid coil is disposed about a plastic bobbin which is, in turn, disposed about a nonmetallic tube which is inserted into a counterbore in the housing. A plunger seat member having a conical lower end for engaging the plunger is soldered within the nonmetalic tube and includes a head abutting the upper end of the tube and the upper end of the bobbin. A wave-like washer is disposed adjacent the bottom of the bobbin for urging the bobbin upwardly against the head of the plunger seat member. A casing is disposed about the solenoid assembly and includes a cover secured to the head of the plunger seat member by a fastener threaded into the plunger seat member. A circuit is disposed within the casing and includes a resistor in series with a capacitor with both the resistor and capacitor in parallel with the coil of the solenoid and with a power source so that when the solenoid is actuated by electrical power the capacitor is charged through the resistor. Upon the termination of the electrical power from the power source, the capacitor will discharge through the resistor to the coil of the solenoid to maintain the plunger in the open position for a predetermined period of time immediately after the termination of electrical power, i.e., as the capacitor discharges.
REFERENCES:
patent: 1324351 (1919-12-01), Haynes
patent: 1654642 (1928-01-01), Geissinger
patent: 2828937 (1958-04-01), Kreitchman
patent: 3254871 (1966-06-01), Limon
patent: 3446473 (1969-05-01), Barker
patent: 3906294 (1975-09-01), Lourigan
patent: 3917220 (1975-11-01), Gilmore
Ambac Industries Incorporated
Rosenthal Arnold
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