Patent ID: 7937782
Filing Date: 2011-05-10
Classification: E03D,Y02A

Abstract:
1. In combination with a flush toilet system including: a. a water tank having a drain opening formed in the bottom thereof; b. a valve seat positioned in said drain opening; c. a fill valve assembly in said water tank having an inlet connected to a source of water under pressure; d. a float operatively connected to said fill valve assembly for controlling the operation thereof; e. a toilet bowl below said water tank fluidly connected to said water tank by said drain opening and said valve seat; f. an overflow tube in said water tank having an open upper end and a lower end which is in communication with said drain opening; g. a flapper valve which is movable between a lower closed position wherein it is in sealing engagement with said valve seat to an upper position wherein water in said water tank will drain into the toilet bowl; h. a flush handle movably mounted on said water tank and which is operatively connected to said flapper valve for raising said flapper valve from its said lower closed position; comprising, and a flapper valve limit structure which yieldably limits the upward movement of said flapper valve after it has been moved upwardly from its said lower closed position towards its said upper position thereby reducing the amount of water which will be discharged from said water tank into the toilet bowl during the flushing cycle; said flapper valve limit structure including a horizontally disposed generally U-shaped spring clip which is selectively vertically adjustably mounted on said overflow tube; said flapper valve limit structure also including a horizontally disposed, elongated coil spring having first and second ends; said first end of said coil spring being secured to said spring clip; said flapper valve limit structure including a flapper valve engagement member at the second end of the coil spring which is in the path of said flapper valve as it moves upwardly from its said lower closed position towards its said upper position.