Water closet flush valve
OwnerCarl E. Imlerinventor
Life of this patent
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Abstract
Disclosed herein is a ballcock type flush valve that has all moving parts above the water line of the tank, thereby eliminating corrosion. The valve configuration is such that it is designed to shut-off the flow of water, thereby providing a positive shut-off, and further it is unique in that it has no seat or seal to leak that is below the water line. Fail safe features include a flush mechanism that will remain inoperative until the tank has regenerated its water supply, thereby providing a full flush. Anti-syphon means are included in addition to prevent back flow of bowl water into the water system. The ballcock flush valve combination is so constructed that ingress of additional water due to a faulty seal is impossible thereby conserving water.
Claims7
A ballcock flush valve comprising a water inlet connected to a lower housing provided with an outlet, and sealing means to close said outlet, an upper body portion communicating with said outlet having a piston means slidably disposed therein which rests on said sealing means, means on said piston disposed at an extremity remote from said sealing means to provide downward displacement of said piston and therefore said sealing means, valve stem means sequentially disposed on said piston means and displaceable in the same sense as said piston means, means connected to said valve stem means remote from said piston means to provide displacement of said valve stem means relative to said piston means, passage means disposed between said piston means and said valve stem means to provide a fluid passage when said piston means or said valve stem means moves relative to each other, syphon tube means communicating with said fluid passage to carry away the fluid which passes therethrough, and plunger means communicating with said upper body portion through a channel which serves to fill a tank reservoir when said sealing means is displaced allowing incoming water to enter into said upper portion.
Dependencies are inferred from the claim text.