Patent ID: 9540798
Date: 2017-01-10
CPC Classifications: E03D,Y10T

Claim:
1. A flush valve system, comprising: a reservoir comprising a drain opening for egress of liquids disposed in the reservoir into a surrounding toilet tank; a lock mechanism movably received by the reservoir, wherein the lock mechanism is translatable between one or more fixed positions on the reservoir, and wherein translating the lock mechanism into the reservoir at increasing depths causes a size of the drain opening to be reduced; a receiver coupled to the reservoir adjacent to the drain opening, wherein the receiver on the reservoir movably receives the lock mechanism, wherein the lock mechanism further comprises: one or more bias arms that extend longitudinally along one or more edges of the lock mechanism, each arm comprising an inwardly or outwardly facing projection, wherein one of the bias arms comprises a locking tab; a detent arm substantially parallel to one of the bias arms to receive the locking tab; wherein the receiver further comprises one or more grooves associated with the one or more bias arms to slidably receive the projections of the bias arms between the one or more fixed positions; and wherein the lock mechanism is locked in one of the fixed positions when the detent arm receives the locking tab.