Patent ID: 8397319
Filing Date: 2013-03-19
Classification: E03D,Y02A

Abstract:
1. A water-conserving flush valve control mechanism for a toilet of the type generally having a water reservoir, an outflow orifice that discharges into a toilet bowl located below, a pivotally operated flapper valve seated on said outflow orifice, a flush handle disposed external to the water reservoir, a flush handle extension disposed within the reservoir and coupled to the flush handle, and an original linkage disposed between the flush handle extension and the flapper type valve to control the movement of the flapper valve with respect to said outflow orifice by operation of the flush handle, the water conserving flush valve control mechanism comprising: an add-on linkage disposed between the flush handle extension and the flapper valve for urging the valve directly downward along its natural arc of motion by returning the flush handle to its original pre-flush position, regardless of the location of the valve along the base of the reservoir, the add-on linkage further comprising: a vertical rigid spine including an upper end termination and a lower end termination, the lower end termination contacting the flapper valve and encircling the original linkage to allow for free movement of said linkage, the vertical rigid spine configured to urge said flapper valve into contact with said outflow orifice when the flush handle is moved toward its original pre-flush position; a lateral extension arm including first and second end terminations, the second end termination coupled through a rotatable pivot connection arrangement to the upper end termination of the vertical rigid spine, the rotatable pivot connection configured to confine the pivoting movement of the vertical rigid spine to follow the natural arc of motion of the flapper valve; wherein the rotatable pivot arrangement of the lateral extension arm and vertical spine is configured to be adjustable in position along the length of the lateral extension arm; and a clamping arrangement for attaching the first end termination of the lateral extension arm to the flush handle extension through a horizontally rotatable attachment that can be locked at any position of horizontal rotation, the horizontally rotatable attachment providing lateral displacement of the vertical rigid spine and ensuring proper location of said vertical rigid spine directly above the flapper valve.