Flush valve leakage prevention and detection device

A flush valve leakage prevention and detection device for utilization in a toilet tank having a flush lever movable to flush the toilet tank and a float controlled water inlet valve assembly operated by a float lever comprising

• latch means for holding the float lever in a raised position corresponding to a closed position for the water inlet valve assembly when the float lever is at an upper position and preventing movement of the float lever to a lowered position corresponding to an open position for the water inlet valve assembly when the water in the toilet tank is lowered from a predetermined level;
• support means having pivot means for pivotally mounting said latch means within the toilet tank;
• and
• control means operatively connected with said latch means for rotationally biasing said latch means to hold the float lever in the raised position and for being directly engaged by the flush lever, said control means being movable by the flush lever to flush the toilet tank, thereby simultaneously rotating said latch means against the rotational bias to release the float lever from said latch means whereby the float lever is allowed to move to a lowered position corresponding to an open position for the water inlet valve assembly.

A flush valve leakage prevention and detection device for utilization in a toilet tank having front and rear walls, a flush lever movable to flush the toilet tank and float controlled water inlet valve assembly operated by a float lever extending within the toilet tank in the same direction as the flush lever comprising

• latch means for holding the float lever in a raised position corresponding to a closed position for the water inlet valve assembly where the float lever is at an upper position;
• means for pivotally supporting said latch means within the toilet tank;
• and
• control means operatively connected with said latch means and extending within the toilet tank in a direction transverse to the flush lever, said control means being biased into supporting engagement upon the flush lever, said control means being movable by the flush lever in response to movement of the flush lever to flush the toilet tank, thereby rotating said latch means to release the float lever to permit opening of the water inlet valve assembly whereby the float lever is allowed to move to a lowered position corresponding to an open position for the water inlet valve assembly.

A flush valve leakage prevention and detection device for a toilet tank having a flush lever movable within the toilet tank for opening a flush valve to flush the toilet tank comprising

• a water inlet valve assembly mounted in the toilet tank and including a ball cock valve movable between closed and open positions to supply water to the toilet tank;
• a lever arm pivotally mounted on said water inlet valve assembly to move said ball cock valve between said closed and open positions in response to pivotal movement of said lever arm, said lever arm being movable between a raised position wherein said ball cock valve is in said closed position and a lowered position wherein said ball cock valve is in said open position;
• a float carried on said lever arm for maintaining said lever arm in said raised position when the water level in the toilet tank is at a predetermined level and for moving said lever arm to said lowered position in response to lowering of the water level in the toilet tank from the predetermined level;
• latch means in the toilet tank for holding said lever arm in said raised position ;
• and
• support means on said water inlet valve assembly for pivotally mounting said latch means upon said water inlet valve assembly, said latch means including a control arm biased into resting engagement upon the flush lever and a locking section positioned by said bias to hold said lever arm to lock said lever arm in said raised position and prevent movement of said lever arm to said lowered position in response to lowering of the water level in the toilet tank from the predetermined level, said control arm being movable by the flush lever upon opening the flush valve to flush the toilet tank to move said locking section out of holding engagement with said lever arm to permit said lever arm to move to said lowered position in response to lowering of the water level in the toilet tank from the predetermined level.