Water gun

Abstract

A repeatable water gun device for projecting jets of water into ambient surrounding water for the purpose of causing cavitations in the water which when the produced cavities collapse due to ambient water pressure a loud sharp report is caused when the cavities collapse upon themselves. The sharp reports may be used for scaring fish away from the intakes of water pipe lines, for cleaning water wells, and for the removal of zebra mussels or other sea life infestation from water pipes.

What is claimed is: 
     
         1 . A water gun, comprising:
 a hydraulic cylinder supplied by a hydraulic pump;   a reset piston movable using the hydraulic cylinder;   an ejector piston within an air chamber adjacent the hydraulic cylinder, the ejector piston having an air bypass flange;   a water ejection chamber having at least one ejection port; and   wherein the water gun is submerged and the ejector piston is accelerated by air pressure through the air chamber and water ejection chamber forcing water through the at least one ejection port and into ambient surrounding water for the purpose of causing cavitations in the water which due to ambient water pressure produces a loud sharp report when the cavities collapse upon themselves.   
     
     
         2 . The water gun of  claim 1  wherein the air pressure in the air chamber is in a range of pressures from 200 psi to 3,000 psi. 
     
     
         3 . The water gun of  claim 1  wherein the air pressure in the air chamber is in a range of pressures from 3,000 psi to 10,000 psi. 
     
     
         4 . The water gun of  claim 1  wherein the ejector piston is a hollow cylinder having a cup shaped top welded or brazed to close the hollow cylinder. 
     
     
         5 . The water gun of  claim 1  wherein the air bypass flange of the ejector piston further comprising a ring bearing installed around the outer diameter of the flange. 
     
     
         6 . The water gun of  claim 1  wherein the ejector piston body being of consistent finish and diameter to ride within a bearing and seal. 
     
     
         7 . The water gun of  claim 6  wherein said bearing and seal being retained at the lower end of the air chamber and the upper end of the water ejection chamber through which the ejector piston reciprocates. 
     
     
         8 . The water gun of  claim 1  wherein the water ejection chamber having more than four ports. 
     
     
         9 . The water gun of  claim 1  wherein the water ejection chamber has a sleeve bearing liner. 
     
     
         10 . The water gun of  claim 1  wherein the ejector piston has a plastic sleeve of ultra high molecular weight polyethylene. 
     
     
         11 . The water gun of  claim 1  wherein the water ejection chamber is removable to provide various nozzle configurations. 
     
     
         12 . The water gun of  claim 1  wherein the reset piston further comprising a latching seal assembly to reset the ejector piston for firing. 
     
     
         13 . The water gun of  claim 12  wherein the latching seal assembly comprising a latching seal surrounding a flange, the flange having an inlet passage and check valve to evacuate air from a cup formed in the upper portion of the ejector piston and latch the reset piston and ejector piston. 
     
     
         14 . The water gun of  claim 1  wherein the hydraulic cylinder is supplied by a water pump. 
     
     
         15 . The water gun of  claim 1  wherein the water ejection chamber further comprising a dashpot. 
     
     
         16 . The water gun of  claim 1  wherein the water ejection chamber further comprising vents to release any trapped air. 
     
     
         17 . An apparatus for the removal of invasive species comprising:
 a hydraulic cylinder supplied by a hydraulic pump;   a reset piston movable using the hydraulic cylinder;   an ejector piston having an air bypass flange within an air chamber adjacent to the hydraulic cylinder;   a water ejection chamber in communication with the free piston; and   wherein the water gun is submerged and the free piston is accelerated by air pressure through the air chamber and water ejection chamber forcing water out and into ambient surrounding water producing a loud report to kill invasive species within or deter invasive species from entering an area.   
     
     
         18 . A method of operating a water gun, comprising the steps of:
 supplying a water gun with pressurized high pressure fluid through a first high pressure hose line to move a reset piston in a first direction to capture an ejector piston while returning fluid through a second high pressure hose line;   reversing the fluid flow direction so that the second hose will move said reset piston in a second direction while returning fluid through said first hose; and   storing energy within said water gun and firing water gun in the same motion.   
     
     
         19 . A method of removal of invasive species from an area, comprising the steps of:
 forming a cylindrical housing having a piston chamber, a pressurized chamber and a water ejection chamber;   submerging the cylindrical housing to fill the water ejection chamber;   moving a reset piston within the piston chamber to draw an ejector piston having an air bypass flange within the pressurized chamber to a ready to fire position;   accelerating the ejector piston through the air chamber and water ejection chamber to generate a loud report.   
     
     
         20 . The method of removal of invasive species from an area of  claim 19  further comprising the step of affixing a latching seal assembly to the reset piston;
 extending a latching seal assembly out of the piston chamber and into the pressurized chamber; 
 plugging the latching seal assembly into a cup formed in an upper portion of the ejector piston; 
 evacuating air from the cup to form a vacuum and draw the ejector piston to a ready to fire position; 
 halting travel of the ejector piston and pulling the latching seal assembly from the cup thereby breaking the vacuum; 
 providing airflow through the air bypass flange to accelerate the ejector piston through the pressurized chamber and water ejection chamber to generate a loud report. 
 
     
     
         21 . The method of removal of invasive species from an area of  claim 19  further comprising the step of pressurizing the pressurized chamber to a range of pressures from 200 psi to 3000 psi. 
     
     
         22 . The method of removal of invasive species from an area of  claim 19  further comprising the step of pressurizing the pressurized chamber to a range of pressures from 3,000 psi to 10,000 psi. 
     
     
         23 . The method of removal of invasive species from an area of  claim 19  further comprising the step of forming the ejector piston with a protective sleeve. 
     
     
         24 . The method of removal of invasive species from an area of  claim 19  further comprising the step of forming a dashpot in the water ejection chamber. 
     
     
         25 . The method of removal of invasive species from an area of  claim 19  further comprising the step of replacing the water ejection chamber with another water ejection chamber having a different nozzle configuration. 
     
     
         26 . The method of removal of invasive species from an area  claim 19  further comprising the step of moving the reset piston using a water pump.