Single pleat drain plunger

Abstract

A drain plunger including an elongate handle having a first end and a second end. A generally cylindrical chamber having a continuous side wall defining a void and having a first end coupled to the handle. A second end of the chamber forms a nozzle defining an opening in communication with the void. Only a single pleat formed in the side wall intermediate the first end of the chamber and the second end of the chamber, the single pleat encircling the void and movable between a compressed position and an expanded position.

1 . A drain plunger comprising: 
 a chamber defining a void;    an elongate handle having a first end forming a grip, and a second end coupled to a first end of the chamber;    a second end of the chamber forming a nozzle defining an opening in communication with the void; and    only a single pleat formed in the chamber intermediate the first end of the chamber and the second end of the chamber, the single pleat encircling the void and movable between a compressed position and an expanded position.    
     
     
         2 . A drain plunger as claimed in    claim 1    wherein the chamber includes a first volume with the pleat in the expanded position and a second volume with the pleat in the compressed position.  
     
     
         3 . A drain plunger as claimed in    claim 2    wherein the volume of the chamber is uniformly reduced when the single pleat is moved from the expanded position to the compressed position.  
     
     
         4 . A drain plunger as claimed in    claim 1    wherein the nozzle is semi-rigid, permitting deformation to sealing engage a drain.  
     
     
         5 . A drain plunger as claimed in    claim 1    wherein the second end of the handle is removably engaged to the first end of the chamber.  
     
     
         6 . A drain plunger as claimed in    claim 1    wherein the handle is hollow and in communication with the void via an aperture formed in the first end of the chamber.  
     
     
         7 . A drain plunger as claimed in    claim 6    further including a closable aperture formed in the handle in communication with the void via the hollow handle.  
     
     
         8 . A drain as claimed in    claim 7    wherein the aperture is formed proximate the first end of the handle.  
     
     
         9 . A drain plunger as claimed in    claim 1    wherein the single pleat is formed proximate the first end of the chamber whereby the single pleat is above water level when in use.  
     
     
         10 . A drain plunger comprising: 
 an elongate handle having a first end and a second end;    a generally cylindrical chamber having a continuous side wall defining a void;    a first end of the chamber coupled to the second end of the handle;    a second end of the chamber forming a nozzle defining an opening in communication with the void; and    only a single pleat formed in the side wall intermediate the first end of the chamber and the second end of the chamber, the single pleat encircling the void and movable between a compressed position and an expanded position.    
     
     
         11 . A drain plunger as claimed in    claim 10    wherein the chamber includes a first volume with the pleat in the expanded position and a second volume with the pleat in the compressed position.  
     
     
         12 . A drain plunger as claimed in    claim 11    wherein the volume of the chamber is uniformly reduced when the single pleat is moved from the expanded position to the compressed position.  
     
     
         13 . A drain plunger as claimed in    claim 10    wherein the nozzle is semi-rigid, permitting deformation to sealing engage a drain.  
     
     
         14 . A drain plunger as claimed in    claim 10    wherein the second end of the handle is threadably engaged to the first end of the chamber.  
     
     
         15 . A drain plunger as claimed in    claim 10    wherein the handle is hollow and in communication with the void via an aperture formed in the first end of the chamber.  
     
     
         16 . A drain plunger as claimed in    claim 15    further including a closable aperture formed in the handle in communication with the void via the hollow handle.  
     
     
         17 . A drain as claimed in    claim 16    wherein the aperture is formed proximate the first end of the handle.  
     
     
         18 . A drain plunger as claimed in    claim 10    wherein the single pleat is formed proximate the first end of the chamber whereby the single pleat is above water level when in use.