Patent ID: 6691332
Filing Date: 2004-02-17
Classification: E03D

Abstract:
A dual volume discharge apparatus for selectively discharging a full flush or a half flush of liquid from a reservoir, said discharge apparatus including:sealing means pivotable between a closed position, a half flush position and full flush position and having a cam engaging portion engageable with a cam when said sealing means is in said half flush position, said sealing means being biased to said closed position when in said half flush position; actuating means capable of selectively moving said sealing means to either of said half flush or full flush positions; a fluid outlet which is sealed when said sealing means is in said closed position and which allows discharge of said flush from said reservoir when said sealing means is in said half flush or full flush positions; and stop means having a cam and a float mounted to a track thereon, said stop means being pivotable between a first position where said cam co-operates with said cam engaging portion when said float is substantially immersed in said liquid and a second position where said cam disengages with said cam engaging portion when said float is not substantially immersed in said liquid; wherein when the actuating means selectively moves said sealing means to said half flush position, said cam and cam engaging portion co-operate to keep said sealing means in said half flush position until said float is no longer substantially immersed in said liquid, whereupon said sealing means reverts to said closed position.