Manually operated water-pic

Abstract

A manually operated water-pic including: a body being a hollow tube; a nozzle disposed at a first end of the hollow tube: a plunger inserted into a second end of the hollow tube so as to be movable relative to the hollow tube between a retracted position and an extended position, the plunger having a seal substantially disposed at an end of the plunger; wherein the seal sealingly engaging with an inner surface of the hollow tube; and the seal defines an inner cavity in the hollow tube for holding a fluid, the inner cavity being in fluid communication with the nozzle such that fluid in the inner cavity is discharged from the nozzle when the plunger is moved towards the retracted position and fluid is drawn into the inner cavity when the plunger is moved towards the extended position.

What is claimed is: 
     
         1 . A manually operated water-pic comprising:
 a body comprising a hollow tube;   a nozzle disposed at a first end of the hollow tube:   a plunger inserted into a second end of the hollow tube so as to be movable relative to the hollow tube between a retracted position and an extended position, the plunger having a seal substantially disposed at an end of the plunger;   wherein the seal sealingly engaging with an inner surface of the hollow tube; and   the seal defines an inner cavity in the hollow tube for holding a fluid, the inner cavity being in fluid communication with the nozzle such that fluid in the inner cavity is discharged from the nozzle when the plunger is moved towards the retracted position and fluid is drawn into the inner cavity when the plunger is moved towards the extended position.   
     
     
         2 . The manually operated water-pic of  claim 1 , wherein the tube has a first hollow portion and a second hollow portion, the first hollow portion having a larger inner diameter than the second hollow portion, the plunger being movable only within the first hollow portion, and the nozzle being disposed on an end of the second hollow portion. 
     
     
         3 . The manually operated water-pic of  claim 1 , wherein the seal is a piston. 
     
     
         4 . The manually operated water-pic of  claim 1 , wherein the hollow tube is disposed to extend along a longitudinal axis and the nozzle is configured to direct fluid in a direction offset from the longitudinal axis. 
     
     
         5 . The manually operated water-pic of  claim 1 , further comprising a handle disposed at an other end of the plunger. 
     
     
         6 . The manually operated water-pic of  claim 5 , wherein the handle is a knob. 
     
     
         7 . The manually operated water-pic of  claim 1 , wherein the seal comprises first and second seals spaced apart in a longitudinal direction of the plunger. 
     
     
         8 . A toothbrush comprising:
 a head having bristles at a first end; and   a water pic at a second end, the water pic comprising:   a shaft extending from the head, the shaft having a first seal substantially disposed at a free end of the shaft;   a holding tube movably disposed over the shaft, the holding tube comprising an inner cavity for holding a fluid, the inner cavity having a surface upon which the first seal sealingly engages;   a nozzle disposed at a first end of the holding tube for discharging the fluid; and   an end cap releasably secured to the first end to conceal the nozzle when secured to the first end and to expose the nozzle when releasably removed from the first end.   
     
     
         9 . The toothbrush of  claim 8 , wherein the end cap is removably secured on the first end of the holding tube by a detent mechanism. 
     
     
         10 . The toothbrush of  claim 8 , wherein the holding tube having a second end, the second end having a detent mechanism for releasably securing the head to the second end of the holding tube.