Water ejectable umbrella

Abstract

A water ejectable umbrella includes a water conduit which is disposed in a tubular stem and which has axially extending water drawing and expelling ducts that are communicated with each other by a transit chamber formed in a handle end portion of the stem. A plunger has a plunger head which is disposed in and which is movable relative to the transit chamber to perform a drawing stroke, during which a reduced pressure is created in the chamber for drawing water through the water drawing duct into the chamber, and an expelling stroke, during which the water in the chamber is pressurized to rush through the water ejecting duct so as to be ejected out of a spout proximate to an upper end of the stem.

1 . A water ejectable umbrella comprising: 
 a tubular stem elongated along an axis, and including a canopy mounting end portion, a handle end portion opposite to said canopy mounting end portion along the axis, and a middle runner sliding portion disposed between said handle end portion and said canopy mounting end portion, said canopy mounting end portion confining a passage which extends along the axis to said middle runner sliding portion and which terminates at upper and lower ports that are respectively formed in said canopy mounting end portion and said middle runner sliding portion, said handle end portion confining therein a transit chamber which extends along the axis and which is communicated with said lower port for receiving water therein;    a runner slidably sleeved on said middle runner sliding portion of said stem, and movable between upper and lower positions, which are respectively proximate to said canopy mounting end portion and said handle end portion;    a canopy and rib assembly mounted pivotally on said canopy mounting end portion, and coupled to and moved with said runner between spread-out and collapsed positions, which correspond to the upper and lower positions, respectively;    a water conduit including a water drawing duct which extends parallel to the axis and which is disposed upstream of said transit chamber so as to draw water from a reservoir into said transit chamber, and a water ejecting duct which is disposed in said passage and downstream of said transit chamber and which extends along the axis to terminate at a spout that is proximate to said upper port; and    a plunger having a plunger head which is disposed in said transit chamber, and which is movable within said transit chamber relative to said handle end portion to perform a drawing stroke, during which a reduced pressure is created in said transit chamber, thereby drawing water from the reservoir through said water drawing duct into said transit chamber, and to perform an expelling stroke, during which the water in said transit chamber is pressurized to rush through said water ejecting duct so as to be ejected out of said spout, and an actuated shank which extends from said plunger head outwardly of said handle end portion and which is operable to move said plunger head.    
   
   
       2 . The water ejectable umbrella of  claim 1 , wherein said water drawing duct is disposed in said passage, and is formed integrally with said water expelling duct, said spout being configured to permit passage of water drawn through said spout into said transit chamber.  
   
   
       3 . The water ejectable umbrella of  claim 2 , wherein said plunger extends along the axis such that said plunger head is movable along the axis away from said passage to increase volume of said transit chamber so as to create the reduced pressure in said transit chamber during the drawing stroke, and is movable along the axis close to said passage to decrease the volume of said transit chamber so as to pressurize the water therein during the expelling stroke.  
   
   
       4 . The water ejectable umbrella of  claim 3 , wherein said water conduit has an inner diameter which is smaller than that of said transit chamber.  
   
   
       5 . The water ejectable umbrella of  claim 1 , wherein said water conduit has upper and lower segments disposed at two opposite ends of said transit chamber along the axis to serve as said water expelling duct and said water drawing duct, respectively.  
   
   
       6 . The water ejectable umbrella of  claim 5 , wherein said handle end portion defines a water storage space therein, and has an opening for introducing water into said water storage space, 
 said lower segment of said conduit being disposed in said water storage space to communicate said water storage space with said transit chamber,    said umbrella further comprising:    a first check valve disposed between said lower segment of said conduit and said transit chamber so as to permit water to flow only from said water storage space into said transit chamber during the drawing stroke,    a second check valve disposed between said transit chamber and said upper segment of said conduit so as to permit water to flow only from said transit chamber into said upper segment during the expelling stroke.    
   
   
       7 . The water ejectable umbrella of  claim 6 , wherein said plunger extends in a radial direction relative to the axis such that said plunger head is movable in the radial direction away from the axis to increase volume of said transit chamber so as to create the reduced pressure with in said transit chamber during the drawing stroke, and close to the axis to decrease the volume of said transit chamber so as to pressurize the water therein during the expelling stroke.  
   
   
       8 . The water ejectable umbrella of  claim 7 , further comprising a biasing member disposed to bias said plunger head away from the axis.