Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1979-05-07
1981-06-09
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 40, F16K 31143
Patent
active
042720524
ABSTRACT:
A flush valve for releasing a predetermined volume of liquid upon actuation thereof includes a valve housing having an inlet, an outlet, a valve seating surface circumventing the inlet and a piston housing portion adjacent to the outlet. The piston is movable between an opened and a closed position and has one end sealable with the valve seating surface when the piston is in the closed position to block the flow of liquid from the inlet to the outlet. Upon actuation of the valve, the piston is unsealed from the seating surface to permit liquid to flow from the inlet to the outlet. The other end of the piston is sealed to the piston housing portion and a control chamber is provided having an expanding portion between the piston and the piston housing portion. Restricted flow of liquid from the control chamber to the outlet is permitted. Means are provided for selectively conducting the pressurized liquid from the inlet to the control chamber to create a resultant force urging the piston to the open position upon actuation of the valve and for disconnecting the pressurized liquid from the inlet to the control chamber when the piston reaches the open position. Means are provided for adjusting the predetermined volume of the liquid released by the flush valve upon actuation thereof and for limiting the volume of liquid released by the flush valve to the predetermined amount.
REFERENCES:
patent: 1394895 (1921-10-01), Griffin
patent: 1934545 (1933-11-01), Langdon
patent: 2502335 (1950-03-01), Metzger
patent: 2613688 (1952-10-01), Knaggs
patent: 3008682 (1961-11-01), Filliung et al.
patent: 3008683 (1961-11-01), Filliung et al.
patent: 3279742 (1966-10-01), Billeter
patent: 3399860 (1968-09-01), Billeter et al.
patent: 3400731 (1968-09-01), McCornack
patent: 3842857 (1974-10-01), McCornack
Hussey Robert R.
Schwadron Martin P.
Walton G. L.
Zurn Industries, Inc.
LandOfFree
Flush valves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flush valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flush valves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1259977