Flapper-free toilet flusher

Abstract

A toilet flusher for use with a toilet tank that has a fill valve and a bottom drain hole allowing water to flow out controlled by a toilet flush valve, the flusher being installable as the toilet flush valve and including: a longitudinally extendable siphon tube extending longitudinally from a drain hole fitting to a tube inlet with-in a float, such that, when sealingly attached to the tank drain hole by a drain hole fitting, the siphon tube will longitudinally extend upward as it is pulled up by the float floating on water in the tank. The flusher further includes: a float chamber around the tube inlet, the chamber being closed above a top edge of the tube inlet and open below it; floatation means that positions the floating float with the top edge of the tube inlet above the water and the chamber opening below the water.

1 . A flusher ( 1100 ) for use in combination with a toilet tank ( 1076 ) that has a fill valve ( 1070 ) controlling water flow into the tank, and a bottom drain hole ( 1074 ) allowing water to flow out of the tank as controlled by a toilet flush valve, the flusher being installable as the toilet flush valve and including:
 a longitudinally extendable siphon tube ( 1103 ) extending longitudinally from a sealable drain hole fitting ( 1003 ) to a tube inlet ( 1002 ) within a float ( 1101 ), such that the flusher can be sealingly attached to the tank drain hole by means of the drain hole fitting, and the siphon tube will then longitudinally extend upward as it is pulled up by the float floating on water in the tank;   and, using orientation directions according to when the flusher is installed:   a chamber ( 1001 ) of the float around the tube inlet, the chamber being closed above a top edge ( 1056 ) of the tube inlet and open below the tube inlet top edge;   floatation means ( 1001 ,  1054 ) associated with the float and arranged such that, when the float is floating on water in the tank, the floatation means will position the float with the top edge of the tube inlet above the water and the chamber opening below the water; and   substantially longitudinal alignment of the drain hole fitting, the siphon tube, and the tube inlet such that they form a substantially vertical tubular passage for water to flow down therethrough and out the drain hole to which the drain hole fitting is attached.   
     
     
         2 . The toilet flusher of  claim 1 , further including:
 a flush arm assembly ( 1102 ) characterized by a flush handle ( 1012 ) at one end of an arm ( 1006 ) and a foot ( 1008 ) at an opposed end; and   tank mounting means ( 1013 ) arranged such that pushing on the flush handle causes the foot to push downward on the float;   whereby a flush cycle can be initiated by pushing the float down enough to submerge the top edge of the siphon tube inlet, thereby starting water flow due to siphoning.   
     
     
         3 . The flusher of  claim 2 , wherein:
 the tank mounting means is a pivot ( 1013 ) portion of the arm that passes through the tank when installed, positioning the flush handle outside the tank for manual operation of the flush arm assembly, and positioning the foot above the float.   
     
     
         4 . The flusher of  claim 1 , wherein the siphon tube is further characterized by:
 reinforcement means ( 1010 ) arranged in a flexible membrane wall ( 1004 ) of the siphon tube;   thereby resisting lateral collapse of the siphon tube due to water pressure.   
     
     
         5 . The flusher of  claim 4 , wherein:
 the reinforcement means is a continuous spiral ( 1010   b ).   
     
     
         6 . The flusher of  claim 5 , wherein the reinforcement means is characterized by:
 a longitudinal spring bias.   
     
     
         7 . The flusher of  claim 4 , wherein:
 the reinforcement means is a longitudinally spaced apart series of independent rings ( 1010   a ).