Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1989-09-08
1990-05-01
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 39, 251 46, F16K 3104
Patent
active
049212087
ABSTRACT:
A proportional flow valve wherein inlet fluid pressure urges the valve member toward the valve set. A pressure member, which may be a rolling diaphragm, has an effective area about equal to that of the valve orifice and is also subjected to inlet fluid pressure, when the valve is open, to counterbalance the force of the inlet fluid pressure on the valve member. A spring constantly urges the valve member toward the valve seat, to close the valve, and a solenoid actuator, when energized, moves the valve member way from the valve seat against the force of the spring. The distance which the valve member moves from the seat, and hence the rate of flow through the valve, is proportional to the amount of current applied to the solenoid actuator. A pilot valve controls the flow of inlet fluid pressure to the pressure member.
REFERENCES:
patent: 1394895 (1921-10-01), Griffin
patent: 1505032 (1924-08-01), Klein
patent: 1658000 (1928-01-01), Langdon
patent: 1892565 (1932-12-01), Browne
patent: 1894267 (1933-01-01), Foresman
patent: 2554158 (1951-05-01), Spence
patent: 2624542 (1953-01-01), Ghormley
patent: 3667722 (1972-06-01), Katz et al.
patent: 4311296 (1982-01-01), Scheffel
patent: 4746093 (1988-05-01), Scanderbeg
patent: 4776561 (1988-10-01), Braunlich et al.
Automatic Switch Company
Levine Alan H.
Walton George L.
LandOfFree
Proportional flow valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Proportional flow valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proportional flow valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-825122