Toilet flushing arrangement

Abstract

A flushing arrangement ( 30 ) including an opened topped housing ( 32 ) surrounding the flush valve ( 12 ). An opening ( 40 ) is provided in a lower part of the housing ( 32 ) with a selectively openable gate ( 44 ). The arrangement ( 30 ) is configured such that for a low volume flush the gate ( 44 ) is closed and only water in the housing ( 32 ) or located thereabove will be flushed, and for a high volume flush the gate ( 44 ) is open wherein substantially all of the water in the cistern ( 20 ) above the lowest part of the opening ( 40 ) is flushed.

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       17 . A toilet flushing arrangement comprising an open topped sleeve locatable in a toilet cistern to surround the flush outlet, with a selectively openable opening provided in a lower part of the sleeve, such that the arrangement provides two flushing modes: 
 a low volume flush with the opening closed, wherein substantially only the water within the sleeve plus the volume of any water located above the top of the sleeve, is flushed; and    a high volume flush with the opening open, wherein substantially the volume of the water in the cistern, whether or not in the sleeve, above the lowest part of the opening is flushed,    a control arrangement being provided with a pivotally moveable handle, such that a first pivotal movement thereof causes a rotation of a cam member that rotates a lever bar resulting in said low volume flush, and further pivotal movement of said handle in the same direction causes said cam to open a closure member covering said selectively openable opening to allow said high volume flush.    
   
   
       18 . The toilet flushing arrangement of  claim 17  wherein said cam member is rotatably attached to a shaft fixedly attached to said movable handle such that pivotal movement in the handle produces pivotal movement in said cam member.  
   
   
       19 . The toilet flushing arrangement of  claim 17  wherein said closure member is movably connected to a biasing member for holding the closure member in a closed position over said selectively openable opening until said further pivotal movement of said cam member occurs opening said closure member from said selectively openable to allow said high volume flush.  
   
   
       20 . The toilet flushing arrangement of  claim 17  wherein said cam member has first and second lobes, the first lobe rotating said lever bar in said low volume flush and said second lobe rotating a linkage assembly during said high volume flush.  
   
   
       21 . The toilet flushing arrangement of  claim 20  wherein said lever bar includes first and second ends, the first end engaging said first lobe and second end adjustably connected to a flush valve, a pivot point is located in said lever bar between said first and second ends such that first pivotal movement in said handle provides downward movement in said first lobe of said cam member resulting in downward movement in said first end of lever bar resulting in upward movement of said second end, thereby raising the flush valve for a low volume flush.  
   
   
       22 . The toilet flushing arrangement of  claim 20  wherein said linkage assembly comprises first and second links, the first link being attached to said second lobe of said cam member and to said second link, the second link being further connected to said closure member such that rotation of the second lobe results in rotation of the first and second links thereby opening the selectively openable opening for a high volume flush.  
   
   
       23 . The toilet flushing arrangement of  claim 19  wherein said closure member includes a pair of vertical pins rotatably attached to said housing.  
   
   
       24 . A toilet flushing arrangement comprising: 
 an open top housing surrounding a flush outlet having a high volume flush opening along the side of said housing;    a control arrangement rotably connected to a cam assembly having first and second lobes;    the first lobe rotating a first linkage assembly during a low volume flush and the second lobe rotating a second linkage assembly during a high volume flush, the second linkage assembly being connected to a selectively operable gate covering said high volume flush opening during a low volume flush and is rotated away from the high volume opening during a high volume flush.    
   
   
       25 . The toilet flushing arrangement of  claim 24  wherein said gate is biased to a closed position by a biasing member.  
   
   
       26 . The toilet flushing arrangement of  claim 25  wherein said biasing member is a spring.  
   
   
       27 . The toilet flushing arrangement of  claim 24  wherein said first linkage assembly further comprises a pivotal bar having first and second ends separated by a pivot point between first and second ends, the first end connectable to said first lobe and said second end of said pivotal bar being connectable to a flush valve.  
   
   
       28 . The toilet flushing arrangement of  claim 24  wherein said second linkage assembly further comprises a cam link and a gate link, the cam link being connectable to said second lobe and said gate link being connectable to said selectively operable gate such that rotation of said second cam lobe produces movement of said gate link and cam link resulting in the opening of said selectively operable gate.  
   
   
       29 . The toilet flushing arrangement of  claim 24  characterized in that the control arrangement is provided such that a first operation thereof causes a low volume flush, and a second operation thereof causes a high volume flush.  
   
   
       30 . The toilet flushing arrangement of  claim 29  characterized in that the control arrangement is with a pivotally movable handle, such that a first pivotal movement thereof causes a low volume flush, and further pivotal movement in the same direction causes a high volume flush.  
   
   
       31 . The toilet flushing arrangement of  claim 24  wherein said selectively operable gate includes a pair of vertical pins rotatably attached to said housing.  
   
   
       32 . The toilet flushing arrangement according to  claim 30  characterized in that the control arrangement is configured such that after a first pivotal movement the handle a spring urging of the selectively operable gate can be felt and must be overcome to cause a high volume flush.  
   
   
       33 . A toilet flushing assembly having multi-volume flush capability comprising: 
 a housing positioned in a toilet tank surrounding an outlet valve, the housing having a high volume opening near the base thereof;    a closure member for the high volume opening, the closure when in use being moveable between a closed position blocking flow through the opening and an open position allowing flow through the opening;    a lever arrangement connectable to a cam assembly connectable to the outlet valve for both a high volume and low volume flush, the cam assembly also being connectable to said closure member to move the closure member to its open position to permit flow through the opening for a high volume flush, such that rotation of the lever arrangement results in a first rotation of said cam assembly producing a low volume flush and further rotation of the lever arrangement to a second rotation of the cam assembly in the same direction producing a high volume flush.    
   
   
       34 . The toilet flushing assembly of  claim 33  wherein said cam assembly includes a first lobe separated from a second lobe by a pivot point, the first lobe being connectable to the outlet valve and the second lobe being connectable to the closure member such that rotation of the first lobe results in said low volume flush and rotation of the second lobe results in said high volume flush.  
   
   
       35 . The toilet flushing assembly of  claim 34  wherein the distance from the pivot point to the perimeter of said first and second lobes is greater for said second lobe than said first lobe.  
   
   
       36 . The toilet flushing assembly of  claim 33  wherein said cam assembly includes a first lobe connected to a first linkage assembly comprising a pivotal bar having first and second ends separated by a bar pivot point between first and second bar ends, the first bar end connected to said first lobe and said second bar end being connected to said flush outlet, further wherein said cam assembly includes a second lobe connected to a second linkage assembly comprising a cam link and a closure link, the cam link being connected to said second lobe and said closure link being connected to said closure member such that rotation of said second cam lobe produces movement of said closure and cam links resulting in the opening of said closure member.