Abstract:
A liquid valve assembly for a toy water gun is provided, the assembly comprising: a conduit being designed to transport liquid therethrough from a liquid source, the conduit comprising an inlet and terminating in a tube, the tube having opposing ends, one of the ends forming a closed tip; and a movable sleeve, the tube being inserted within the sleeve, the sleeve having an outer end, the outer end having a central passage, the sleeve being movable relative to the tube from a first position to a second position, in the first position, the sleeve locates the closed tip and forms a fluid tight connection with the central passage thereby preventing flow of liquid through the central passage, in the second position, the sleeve locates the outer end spaced from the tube thereby permitting flow of liquid through the central passage.

Description:
RELATED APPLICATIONS 
     This application is a divisional application of U.S. patent application Ser. No. 09/526,004 filed Mar. 15, 2000 entitled “Hand Operated Water Gun”, which is a continuation-in-part of U.S. patent application Ser. No. 09/296,183 filed Apr. 26, 1999 now abandoned, entitled “Hand Operated Water Gun”. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a valve assembly for a toy water gun. More specifically, the present invention relates to a valve assembly in a hand operated water gun for conducting liquid from a liquid source, comprising an inlet conduit terminating in a tube and a movable sleeve surrounding the tube whereby the movement of the sleeve relative to the tube dictates the stoppage and the flow of the liquid through a central passage. 
     2. Description of the Related Art 
     Water guns have long been known. The prior art water guns usually include a hollow housing fashioned in the shape of a pistol or rifle. The housing is designed to hold a quantity of water. A trigger on the housing is typically connected to a pump built into the housing. Movement of the trigger causes an amount of water to be forced outwardly through a nozzle that is mounted on or in the housing. However, water guns which utilize a pump type trigger suffer from a drawback in that the power available to expel the water is necessarily less than that which can be supplied by the trigger finger of the user and thus the shooting range and volume of water expelled are quite limited. 
     To increase the pressure and volume of the water released, it has been proposed that an external energy source could be used, such as a battery or cylinder of compressed gas. Obviously, this would add to the complexity and cost to the water gun and make it less convenient to use and possibly make it unsafe. 
     A more practical method of increasing volume and range of a water gun has been successfully marketed in which the user can store energy by using a manually operated pump to compress air within a chamber in the water gun. The compressed air can then force a copious quantity of water out the nozzle when a valve is opened by a trigger. One disadvantage of this system is that it is relatively complex, having to deal with compressed air and water. Also, the active compressing of the air requires a large pump, which makes the toy bulky and adds to the cost. Also, in order to build up sufficient pressure, it takes many strokes of the pump, which diminishes the fun of the toy water gun. Furthermore, continued pumping could lead to an unsafe external pressure. 
     Another way to store energy that has been proposed is to use an elastic bladder, such as an elastic bladder, such as a length of latex rubber tubing, to store pressurized water. This eliminates the need to pressurize air, which is used in the propelling medium. However, there is a problem with the pressurized water being supplied to a latex bladder in that if the bladder is subjected to excessive pressure, it will rupture. This problem of excessive pressure has been addressed by adding a pressure relief valve. In addition, this problem has been resolved with the use of external pressurized water source, such as household tap water, to fill the elastic bladder, which is inconvenient. 
     SUMMARY OF THE INVENTION 
     In one embodiment, the present invention relates to a valve assembly adapted for use with a toy water gun. In another embodiment, the valve assembly comprises an inlet conduit for conducting of liquid from a liquid source, the inlet conduit terminating in a tube and the tube having a longitudinal axis and the tube having a free end formed into a closed tip. In still another embodiment, the tube has a sidewall extending to the closed tip and the sidewall has at least one liquid conducting opening. In yet another embodiment, the assembly further comprises a sleeve surrounding the tube and the sleeve is attached to the inlet conduit; the sleeve may be spaced from the tube. In still yet another embodiment, the sleeve terminates at an outer end and the outer end includes a central passage; the sleeve is longitudinally movable relative to the longitudinal center axis from a first position to a second position; the first position locates the closed tip in fluid tight connection with the central passage preventing flow of liquid through the central passage; the second position locates the outer end spaced from said tube permitting flow of liquid through the central passage. 
     In a further embodiment, the sleeve of the valve assembly of the present invention comprises an elastic bellows, which permits adjusting movement of the sleeve between the first and second positions. In still yet a further embodiment, the central passage of the valve assembly of the present invention comprises an annular ridge secured to the outer end and the annular ridge is in tight connection with the closed tip when the sleeve is in the first position. 
     In another further embodiment, the present invention relates to a liquid valve assembly in a toy water gun, the assembly comprising: a conduit being designed to transport liquid therethrough from a liquid source, the conduit comprising an inlet and terminating in a tube, the tube having opposing ends, one of the ends forming a closed tip; and a movable sleeve, the tube being inserted within the sleeve, the sleeve having an outer end, the outer end having a central passage, the sleeve being movable relative to the tube from a first position to a second position, in the first position, the sleeve locates the closed tip and forms a fluid tight connection with the central passage thereby preventing flow of liquid through the central passage, in the second position, the sleeve locates the outer end spaced from the tube thereby permitting flow of liquid through the central passage. 
     In yet another further embodiment, the present invention relates to a method of manufacturing a liquid valve assembly in a toy water gun, the method comprising: providing a conduit being designed to transport liquid therethrough from a liquid source, the conduit comprising an inlet and terminating in a tube, the tube having opposing ends, one of the ends forming a closed tip; inserting the tube within a movable sleeve, the sleeve having an outer end, the outer end having a central passage, the sleeve being movable relative to said tube from a first position to a second position; in the first position, allowing the sleeve to locate the closed tip and form a fluid tight connection with the central passage thereby preventing flow of liquid through the central passage; and in the second position, allowing the sleeve to locate the outer end spaced from the tube thereby permitting flow of liquid through the central passage. 
     In still yet another further embodiment, the tube has a longitudinal center axis, and the method further comprises allowing the sleeve to longitudinally move relative to the tube parallel to the longitudinal center axis from the first position to the second position. In a further embodiment, the method further comprising providing the sleeve with an elastic bellows which permits adjusting movement of the sleeve between the first position and the second position, and providing the central passage with an annular ridge secured to the outer end, the annular ridge is in tight connection with the closed tip when the sleeve is in the first position. 
     In another embodiment, the present invention relates to an arm mounted water gun comprising: a water reservoir; a base section designed to be mounted on an upper arm of a user; a pump means and an elastic bladder, the reservoir connecting with the pump means, the pump means being operable to cause flow of water from the reservoir to the elastic bladder to thereby cause the elastic bladder to expand when the volume of water within the elastic bladder exceeds the internal volume of the elastic bladder in its unexpanded state; a movable section attached to the pump means, movement of the movable section causes operation of the pump means, the movable section designed to be mounted on a lower arm of the user, whereby movement of the user&#39;s lower arm relative to the upper arm causes activation of the pump means and storage of water within the elastic bladder; a discharge nozzle designed to receive water from the elastic bladder and to dispense water; and a manually operated shut-off valve having a closed position and an open position; in a closed position, the valve prevents flow of water through the discharge nozzle, and in an open position, the valve allows flow of water through the discharge nozzle to thereby allow the gun to dispense water. In still another embodiment, the movable section is attached to the base section and the discharge nozzle is designed to be operated by the hand of the user. 
     In yet another embodiment, the present invention relates to an arm mounted water gun comprising: a water reservoir; a base section designed to be mounted on an upper arm of a user; a pump means and an elastic bladder, the reservoir connecting with the pump means, the pump means being operable to cause flow of water from the reservoir to the elastic bladder to thereby cause the elastic bladder to expand when the volume of water within the elastic bladder exceeds the internal volume of the elastic bladder in its unexpanded state; a movable section attached to the pump means, movement of the movable section causes operation of the pump means; a discharge nozzle designed to receive water from the bladder and to dispense water; the discharge nozzle being mounted on the movable section; and a manually operated shut-off valve having a closed position and an open position, in a closed position, the valve prevents flow of water through the discharge nozzle, and in an open position, the valve allows flow of water through the discharge nozzle to thereby allow said gun to dispense water. 
     In still yet another embodiment, the arm mounted water gun of the present invention further comprises a pressure relief valve for preventing over expansion of the elastic bladder. In a further embodiment, the pressure relief valve is connected to the elastic bladder and the gun further comprising a water supply tube, the pressure relief permitting free flow of water between the elastic bladder and the water supply tube by means of a return tube upon the elastic bladder being expanded to its maximum expanded state. In still a further embodiment, the pressure relief valve utilizes the expandable feature of the elastic bladder to hold open a water inlet valve member when the elastic bladder is at its maximum expanded state permitting free flow of water from the elastic bladder to the reservoir to prevent rupture by over expansion of the elastic bladder. 
     In yet a further embodiment, the present invention relates to a water gun comprising: a water reservoir; a base section connected to the reservoir by a water supply tube; a movable section being pivotally connected to the base section; and a discharge nozzle connected to the movable section by an outlet water tube, whereby pivotal movement of the movable section relative to said base section causes water to be moved from the reservoir through said water supply tube to the movable section and, upon activation of the discharge nozzle, through the outlet water tube and discharged from the discharge nozzle. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The accompanying drawings are included to provide a further understanding of the present invention. These drawings are incorporated in and constitute a part of this specification, illustrate one or more embodiments of the present invention, and together with the description, serve to explain the principles of the present invention. 
     FIG. 1 is a top plan view of the first embodiment of the water gun of this invention showing the hand operated water gun in its uninstalled position; 
     FIG. 2 is a side elevational view taken along line  2 — 2  of FIG. 1 showing the installation of one of the embodiments of the hand operated water gun of this invention on a user&#39;s arm; 
     FIG. 3 is a top plan view of another embodiment of the hand operated water gun of the present invention; 
     FIG. 4 is a side cross-sectional view taken along line  4 — 4  of FIG. 3 of another embodiment of the hand operated water gun of the present invention; 
     FIG. 5 is a side elevation view of still another embodiment of the water gun in the normal position of discharging a stream of water; 
     FIG. 6 is a view similar to FIG. 5, specifically depicting movement of the user&#39;s arm in order to pump liquid into the elastic bladder; 
     FIG. 7 is a cross-sectional view through the elastic bladder of another embodiment of the present invention showing the inclusion of the pressure release valve associated in conjunction with the elastic bladder taken along line  7 — 7  of FIG. 5 showing the elastic bladder I an unexpanded state; 
     FIG. 8 is a cross-sectional view similar to FIG. 7 specifically showing the elastic bladder in the maximum expanded configuration; 
     FIG. 9 is a front view of another embodiment of the water gun of the present invention; 
     FIG. 10 is a cross-sectional view showing the connection between the inlet valve of the elastic bladder with a fill valve that is mounted in conjunction with the reservoir taken along line  10 — 10  of FIG. 6; 
     FIG. 11 is a cross-sectional view through one of the pistons that is utilized in conjunction with the pumping apparatus included within another embodiment of the water gun taken along line  11 — 11  of FIG. 5; 
     FIG. 12 is a cross-sectional view through the hand held trigger and discharge nozzle, which is utilized in conjunction with the other embodiment of this invention taken along line  12 — 12  of FIG. 9; 
     FIG. 13 is an isometric view of the fill valve that is shown in FIG. 10 emphasizing the fill valve in the closed position preventing flow of liquid from the reservoir; 
     FIG. 14 is a side elevational view of yet another embodiment of the water gun of the present invention where the discharge nozzle is not hand held but is mounted on a movable section of the water gun structure; 
     FIG. 15 is a top view of a configuration of the reservoir of the present invention that can be used in conjunction with the water gun of the present invention; 
     FIG. 16 is a cross-sectional view taken along line  16 — 16  of FIG. 15 showing one embodiment of the valve plate that is mounted in conjunction with the reservoir in a displaced position permitting entry of liquid from a source into the internal chamber of the reservoir; 
     FIG. 17 is a top view similar to FIG. 15 showing another further embodiment of the reservoir of the present invention; 
     FIG. 18 is a cross-sectional view taken along line  18 — 18  of FIG. 17 again showing the valve plate connected with the reservoir in a displaced position permitting entry of liquid from a liquid source; 
     FIG. 19 is a top plan view similar to FIG. 17 showing still a further embodiment of the valve plate that is mounted in conjunction with the reservoir of the present invention; 
     FIG. 20 is a cross-sectional view taken along line  20 — 20  of FIG. 19 showing the valve plate of an embodiment of this invention in the closed position; and 
     FIG. 21 is a partial cross-sectional view of the valve plate within the configuration of the reservoir shown in FIG. 20 with the valve plate in a displaced position permitting entry of liquid from a source to within the internal chamber of the reservoir. 
    
    
     Among those benefits and improvements that have been disclosed, other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings. The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof 
     DETAILED DESCRIPTION OF THE INVENTION 
     As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various forms. The figures are not necessary to scale, some features may be exaggerated to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention. 
     Referring particularly to FIGS. 1 and 2 of the drawings, there is shown one embodiment  10  of the present invention. The first embodiment  10  is constructed primarily of a base section  12  and a movable section  14 . The base section  12  forms a cradle, which is constructed of a pair of rigid elongated metal or plastic strips  16  and  18 , which are connected together by rigid metal or plastic arcuate strips  20  and  22 . Strips  16  and  18  are parallel. In between the elongated strips  16  and  18  and against the inside surface of the arcuate strips  20  and  22  is to be located the user&#39;s upper arm  24 . This cradle formed by the strips  16 ,  18 ,  20  and  22 , is fixedly mounted on the upper arm  24  by means of fastening straps  26  and  28 . These fastening straps  26  and  28  are mounted between the elongated strips  16  and  18  and extend underneath the upper arm  24 . These fastening straps  26  and  28  can terminate in a fastening type of connection such is commonly sold under the trade name of Velcro. 
     Fixedly mounted on the arcuate strip  20  is a tubing  30 . Tubing  30  includes an enlarged fore end  32  and an enlarged rear end  34 . The enlarged fore end  32  is what is actually fixedly secured to the arcuate strip  20 . Fixedly mounted on the strip  22  is a tubing connector  36 . Mounted between the tubing connector  36  and the enlarged fore end  32  is an elastic bladder  38 . The elastic bladder  38  includes an internal chamber  40 . 
     Inside of the enlarged fore end  32  is a spring  42 . The at-rest position of the spring  42  is to force valve plate  44  in a tightly seated position closing off of passage  46  formed within the tubing  30 . In a similar manner, contained within the enlarged rear end  34  is a spring  48 . The spring  48  exerts a continuous bias against valve plate  5 , which closes passage  46 . 
     A reservoir  52  is designed to contain a quantity of water  54 . The reservoir  52  has a connector  56 . Connecting with the connector  56  is a water supply tube  58 . The water supply tube  58  passes through on/off valve  60  and connects with passage  46 . 
     The tubing connector  36  includes an outlet passage  62  and also a pressure relief passage  64 . The outlet passage  62  connects with outlet tube  66 . The pressure relief passage  64  includes a plunger  70  and a bias spring  72 . The return tube  74  is connected to interconnecting tube  76 , which connects between the on/off valve  60  and the enlarged rear end  34 . The pressure relief valve  68  is mounted on arcuate strip  22 , which is pivotally mounted by pivot pin  11  to elongated strip  16 . As the elastic bladder  38  expands, it not only gets wider but axially longer. This causes the plunger  70  to pivot toward stop member  69 . Stop member  69  comprises a solid member fixed to elongated strip  16  by fasteners  71  and is positioned to be in the path of the movement of plunger  70 . When the user makes a pumping action at this time with the elastic bladder  38  fully expanded, the stop member  69  will contact the plunger  70  activating relief valve  68  and releasing some of the water from within the elastic bladder  38  through return tube  74  into interconnecting tube  76 . Upon release of a sufficient amount of water from within the internal chamber  40  to cause the elastic bladder  38  to be deflated to a safe level, the plunger  70  is automatically release by counterclockwise movement of arcuate strip  22 , which will prevent the flow of water from internal chamber  40  into return tube  74 . 
     Fixedly mounted onto the elongated strip  16  is a cylinder  78 . A similar cylinder  80  is fixedly mounted onto the elongated strip  18 . The cylinders  78  and  80  can be constructed of transparent plastic material if such is desired. The internal chamber of the cylinder  78  connects through tube  82  to tubing  30 . In a similar manner, the internal chamber of the cylinder  80  connects through tube  84  to the tube  30 . Movably mounted within the internal chamber of the cylinder  78  is a piston  86 . In a similar manner, piston  88  is movably mounted within the internal chamber of the cylinder  80 . The piston  86  is attached to a piston rod  90 . In a similar manner, the piston  88  is attached to a piston rod  92 . It is to be understood that piston rod  90  is capable of a limited amount of pivoting movement relative to the piston  86 . In a similar manner, the piston rod  92  is capable of a limited amount of pivoting movement relative to the piston  88 . Piston rod  90  is pivotally attached to elongated strip  96  of the movable section  14 . The elongated strips  94  and  96  can either be constructed of rigid metal or plastic material. Also, the strips  94  and  96  are located parallel to each other and are designed to be located on opposite sides of a forearm  98  of the user. Fastening straps  100  and  102  are designed to secure the elongated strips in position on the forearm  98 . 
     The rear end of the elongated strip  94  is connected by a pivot joint  104  to the elongated strip  16 . In a similar manner, the elongated strip  96  is connected by pivot joint (not shown) to the elongated strip  18 . It is these pivot joints, such as pivot joint  104 , that permit the movable section  14  to be pivoted relative to the base section  16 . Pivoting of the movable section  14  is in a manner, which is typical of the hinge type movement that is permitted of a forearm  98  relative to an upper arm  24 . The piston rod  90  is pivotally attached to elongated strip  94  by the means of a pivot pin  106 . A similar pivot pin  108  pivotally connects the piston rod  92  to the elongated strip  96 . Adjacent the rear end of elongated strips  94  and  96  is a cross brace  99 . Cross brace  99  will rest against the upper surface of the forearm  98 . 
     The fore end of the elongated strips  94  and  96  are joined together by connecting platform  101  and a cross brace  103 . Cross brace  103  will also rest on the upper surface of the forearm  98 . Mounted on the connecting platform  101  is a discharge valve housing  112 . The outlet tube  66  connects with the discharge valve housing  112  with the internal passage  114  of the outlet tube  66  connecting with the internal chamber  116  of the discharge valve housing  112 . The discharge valve housing  112  includes a dispensing spout  118 . Located within the internal chamber  116  is a valve plug  120 , which is normally seated closing off dispensing passage  122  of the dispensing spout  118 . Valve plug  120  defines a shut-off valve. The valve plug  120  is connected to a rod  124  with a spring  126  being located about the rod  124 . The function of the spring  126  is to exert a continuous bias tending to locate the plug  120  in position to close the dispensing passage  122 . The outer end of the rod  124  is integrally connected to a cross rod  128 . One end of the cross rod  128  is attached to a link  130  with the opposite end of the cross rod  128  being attached to a link  132 . The lower end of the link  130  pivotally connected to the elongated strip  94  with the lower end of the link  132  being pivotally connected to the link  96 . Connected between the links  130  and  132  is an actuating rod  134 . The outer end of the actuating rod  134  connects to bulbous handle  136 . the bulbous handle  136  is positioned to rest within the user&#39;s hand  138 . 
     The operation of the first embodiment  10  of this invention is as follows: the on/off valve  60  is located in the open position which permits water to be capable of flowing from the reservoir  52  through water supply tube  58  adjacent the valve plate  50 . The movable section  14  may be located in a right-angled position relative to the base section  12 . In FIG. 2 of the drawings, the movable section  14  is located in an elongated position relative to the base section. The user then may proceed to move the user&#39;s arm  98  to the position shown in FIG.  2 . This will cause the pistons  86  and  88  to be moved to the lower end of their respective cylinders  78  and  80 . This creates a suction within the cylinders  78  and  80  with this suction being supplied within the passage  46 . This suction will cause the valve plate  46  to be unseated which will permit water to flow into passage  46  through tubes  82  and  84  to within the internal chambers of the cylinders  78  and  80 . Now, when the movable section  14  is moved in the reverse direction from the elongated position shown in FIG. 2 to a right angled position (which is not shown), the pistons  86  and  88  will force the water through the passage  46  seating valve plate  50  and then unseating valve plate  44  which will then permit the water to flow within the internal chamber  40  of the elastic bladder  38 . The elastic bladder  38  will then expand similar to the dotted line position shown in FIG.  2 . In one embodiment, it will require approximately one to three pumps by the forearm  98  to result in complete desired expansion of the elastic bladder  38 . 
     With the expansion of the elastic bladder  38  now occurring, the user may then point the dispensing spout  118  in the desired direction of the target and then move rearwardly the bulbous handle  136 , which will cause the links  130  and  132  to pivot clockwise, as shown in FIG. 2, which will move rod  124  rearwardly unseating plug  130  from the dispensing passage  122 . As a result, the water will be shot in the form of a stream of water from the dispensing passage  122  into the ambient. When it is desired to terminate the expelling of the water in a stream, the user only needs to release the bulbous handle  136  which will result in the valve plug  120  again moving to a position to close dispensing passage  122 . 
     Referring particularly to FIGS. 3 and 4 of the drawings, there is shown another embodiment of the present invention. This embodiment  140  includes a rigid base section  142 . Fixedly mounted on the aft end of the base section  142  is a reservoir  144 . The reservoir  144  is to contain water  146 . Supplying of water  146  to within the reservoir  144  is to be accomplished by removing of the cap  148  and pouring of the water  146  through the inlet  150 . Extending within the internal chamber  152  of the reservoir  144  and submerged within the water  146  is a tube  154 . The tube  154  has a passage  156 . The tube  154  extends exteriorly of the reservoir  144  and connects to a valve housing  158 . Mounting within the valve housing  158  is a valve plate  160 . Valve plate  160  connects with a spring  162 , which is located within the internal chamber  164  of the valve housing  158 . It is the function of the spring  162  to normally locate the valve plate  160  to close off passage  156 . 
     Valve housing  158  connects to an interconnecting tube  166 . Interconnecting tube  166  connects to a second valve housing  168 . Included within the second valve housing  168  is an internal chamber  170 . Located within the internal chamber  170  is a spring  172  and a valve plate  174 . Valve plate  174  functions to close off the passage  176  of the interconnecting tube  166 . 
     Internal chamber  170  connects with a short tube  178 . The short tube  178  is attached to one end of an elastic bladder  180 . The internal passage  182  of the short tube  178  connects with the internal chamber  184  of the elastic bladder  180 . The opposite end of the elastic bladder  180  is mounted to an outlet tube  186 . The open ends of the elastic bladder  180  are secured as by clamping band  246  to short tube  178  and by clamping band  248  to the outlet tube  186 . The outlet tube  186  has an internal passage  188 , which connects with the internal chamber  184 . The passage  188  also connects with internal chamber  190  located within a discharge valve housing  192 . Located within the discharge valve housing  192  is a plug  194 , which is located to close off spout passage  196  of a dispensing spout  198 . The plug  194  is attached to a rod  200 , which extends exteriorly of the internal chamber  190 . Within the internal chamber  190  and located about the rod  200  is a spring  202 . The function of the spring  202  is to maintain a continuous bias against the plug  194  tending to have it be seated so as to close off the spout passage  196 . 
     The rod  200  is pivotally connected to a link  204  with one end of the link  204  being pivotally mounted on the base section  142 . Also connecting with the link  204  in a pivotally connected manner is an actuating link  206 . The link  206  is also pivotally connected to the inner end of a lever  208 . The lever  208  is also pivotally mounted by means of a pivot pin  210  to the base section  142 . 
     Positioned directly adjacent the elastic bladder  180  is an actuating lever  212 . This actuating lever  212  is connected to a pressure relief valve (not shown), which is located within the pressure relief valve housing  214 . Tube  216  connects between outlet tube  186  and pressure relief valve housing  214 . A return tube  218  connects between the pressure relief valve housing  214  and tube  154 . 
     A cylinder  220  is fixedly mounted by strap  222  to the base section  142 . Movably mounted within the cylinder  220  is a piston  224 . The outer end of the cylinder  220  connects by way of a tube  226  to the interconnecting tube  166 . The tube  226  contains an internal passage  228 . 
     Piston  224  is pivotally connected to a piston rod  230 . The piston rod  230  extends exteriorly of the cylinder  220  through enlarged opening  232  and connects with handle  234 . The inner end of the handle  234  is pivotally connected by pivot pin  236  to the base section  142 . 
     The operation of this second embodiment  140  of the invention is as follows: The handle  234  may be grasped by one hand of the user with the opposite hand of the user holds onto the base section  142 . The handle  234  is in the retracted position  238 , which is shown in dotted lines. In this position, the piston  224  is located directly adjacent the passage  228 . As the user proceeds to move the handle  234  from the dotted line position  238  in the direction of arrow  230  to the solid line position shown in FIG.  4 . While this occurs, water  146  is being sucked from the internal chamber  152 , through the passage  156 , unseating valve plate  160  and flows into the internal chamber  164 . From the internal chamber  164 , the water is conducted into the passage  176 , down the passage  228  to within the internal chamber  242  of the cylinder  220 . From the solid line position, the handle  234  is then moved back to the retracted position, shown in dotted line at  238 . This will cause the water contained within the internal chamber  242  to be moved through the passage  228 , through the passage  176 , unseating of valve plate  174  and compressing the spring  172 , to within the internal chamber  170 . From the internal chamber  170 , the water will flow through passage  182  to within the internal chamber  184  of the elastic bladder  180 . Because at this time there is no outlet for the water from the internal chamber  244  shown in FIG. 4 of the drawings. 
     It is to be noted that this second embodiment  140  utilizes only a single piston  24  and a single cylinder  220  which means there may be required a greater number of pumping movements by the user&#39;s hand in order to achieve the desired inflation of the elastic bladder  180 . If, per chance, the elastic bladder  180  becomes over inflated, it will automatically press against actuating lever  212  which will open relief valve (not shown) contained within the pressure relief valve housing  214 , which will cause water to be conducted from passage  188 , through the tube  216  and through tube  218  into passage  156  of the tube  154 . This will cause the elastic bladder  180  to partially deflate, and upon a desired level of deflation being achieved, the actuating lever  212  will automatically be moved so that the pressure relief valve (not shown) contained within the pressure relief valve housing  214  to be closed not permitting the conducting of water from the passage  188  into passage  176 . 
     When the user presses on lever  208 , the actuating link  206  is moved linearly and the link  204  is pivoted. The pivoting of link  204  will cause linear movement of the rod  200  which will unseat plug  194  from the spout passage  196 . This will cause water to be ejected from the spout passage  196  into the ambient. When such dispensing of the water has occurred from the spout passage  196 , the lever  208  is released which will cause the plug  194  to be again seated closing off the spout passage  196  and the user can then, again, manually move the handle  234  between the solid line position and the dotted line position  238 , shown in FIG. 4, to achieve reinflating of the elastic bladder  180  with water. 
     Referring particularly to FIGS. 5,  6  and  9  of the drawings, there is shown still yet another embodiment  250  of the water gun of the present invention. This embodiment  250  includes a base section  252  and a movable section  254 . The base section  252  has a pair of main arms  256  and  258 . One main arm  256  is fixedly mounted on one side of a valve housing  260  with the other main arm  258  being mounted on the diametrically opposite side of the valve housing  260 . The user&#39;s arm  262  is mounted in between the main arms  256  and  258 . A U-shaped bracket  264  is also secured between the main arms  256  and  258  with the user&#39;s arm  262  to be located within the area confined by the bracket  264 . Mounted against the backside of the user&#39;s arm is a strap assembly  266 . The strap assembly  266  may be disengageable so as to permit disconnection of the base section  252  from the user&#39;s arm  262 . The function of the strap assembly  266  is to securely mount the base section  252  onto the user&#39;s arm  262 . 
     Pivotally mounted on the portion of the main arm  256  that is furthest from its connection with the valve housing  260  is the main arm member  268  of the movable section  254 . A similar arm member  270  is pivotally mounted in a similar position onto the main arm  258 . The arm members  268  and  270  are connected together by wrist strap  272 . The wrist strap  272  is comprised of a pair of strap members, which are connected together and are to be located around the wrist of the user&#39;s forearm  274 . 
     Referring particularly to FIGS. 7 and 8, mounted on U-shaped bracket  264  is a valve outer housing  276 . The valve outer housing  276  includes a stem  278 , which is to be connected to a flexible tube  280 . Within the flexible tube  280  is a liquid conducting passage  282 . The passage  282  connects with the passage  284  formed within the stem  278 . The passage  284  connects with the internal chamber  286  of the valve outer housing  276 . The flexible tube  280  is fixedly mounted by a securing sleeve  288  to the stem  278 . The valve outer housing  276  is threadably secured t cap  290 . The cap  290  functions to mount one end of a tubular elastic bladder  292  to the valve outer housing  276 . 
     The tubular elastic bladder  292  is constructed of an inner bladder  293  and an outer bladder  295  which are mounted so their longitudinal central axes coincide. The inner bladder  293  is mounted within outer bladder  295  with the bladders  293  and  295  abutting. Expansion of bladder  292  produces simultaneous expansion of bladders  293  and  295 . If a rupture occurs of bladder  293 , bladder  295  will still function and vice versa. This is a safety feature to insure that operation of the water gun will continue. 
     Mounted within the internal chamber  286  is an inner housing  294 . The inner housing  294  has a hole  296 . Mounted within the hole  296  and locatable within the internal chamber  286  is barb end  298  of the valve stem  300 . Relative movement I possible between the valve stem  300  and the inner housing  294 , and when the elastic bladder  292  is expanded to the maximum configuration, the barb end  298  will abut against the inner housing  294  as is clearly shown in FIG. 8 of the drawings. When the elastic bladder  292  is in anything other than the maximum expanded configuration, the barb end  298  will be located deep within the internal chamber  286 , as is clearly shown in FIG. 7 of the drawings. 
     The valve stem  300  is connected to a box end  302 . The box end  302  is slidably mounted within chamber  304  of the entrance housing  306 . Located about the valve stem  300  is a coil spring  308 , one end of which is to abut against the entrance housing  306  and the opposite end of which abuts against the box end  302 . A cap  310  is to be secured to a threaded section of a valve inner housing  312  with the cap  310  functioning to securely mount the inner end of the elastic bladder  292  onto the entrance housing  306 . 
     The box end  302  includes an internal chamber  314  within which is movably mounted the aft end  316  of a headed valve member  318 . The headed valve member  318  is capable of seating against seat  320  of the retainer  322 . The entrance housing  306  is mounted within valve housing  260 . The entrance housing  306  includes a plurality of annularly spaced-apart ribs  324 . One end of the retainer  322  abuts against the ribs  324 . Mounted within the valve housing  260  is a valve disk  326 . The valve disk  326  is movable a limited amount within the chamber  328 . The valve disk  326  will normally be constructed of a resilient material such as a rubber or plastic. 
     The valve housing  260  includes a forward tube  330 , which includes a through passage  332 . The valve housing  260  also includes tube connectors  334  and  336 . The tube connector  334  has a through passage  338  and the tube connector  336  has a through passage  340 . Formed on the inside surface of the valve housing  260  are a plurality of ribs  342 . The ribs  342  and  324  cooperate to form the chamber  328  within which is located the valve disk  326 . 
     Referring particularly to FIGS. 10 and 13, the forward tube  330  is to be insertable within a conical connector  344 . The conical connector  344  has a central passage  346 . Formed within the central passage  346  and integral with the wall of the central passage  346  is an annular rib  348 . The free peripheral edge of the conical connector  344  is attached to a hard ring  350 . It is to be understood that the hard ring  350 , as well as most of the structural items making up the water gun of this invention, is to be constructed of plastic. The function of the hard ring  350  is to maintain the established shape of the conical connector  344  since the conical connector  344  is to be constructed of an elastomeric material. 
     The conical connector  344  is integral with bellows  352 . The bellows  352  has an internal chamber  354 . A rigid tube  356 , constructed of hard plastic, is to be located within the internal chamber  354 . The rigid tube  356  has a pair of holes  358  and  360  formed within its sidewall. The rigid tube  356  terminates in its outer end at a pointed closed end  362 . The aft end of the rigid tube  356  is fixedly secured to inlet tube  364  and also the aft end of the bellows  352 . the inlet tube  364  connects to reservoir  366 . 
     The reservoir  366  constitutes a flexible walled bag, which is to be worn on the back of the user  368 . The reservoir  366  is maintained in that position by straps  370  and  372 . The inlet tube  364  is held in position relative to the reservoir  366  by means of a cap  374 , which is mounted within the fill opening of the reservoir  366 . Water  376 , that is contained within the reservoir  366 , is to be sucked through the inlet tube  364  through the internal passage  378  and be dispensed through the holes  358  and  360  into the internal chamber  354 . From the internal chamber  354  the water is to flow through holes  380  and  382  of the forward tube  330  and into the through passage  332 . The conical connector  344  is mounted on the exterior surface of the forward tube  330  with the annular rib  348  forming a fluid tight connection with the forward tube  330 . The water is to then flow into contact with the valve disc  326  displacing such rearwardly which will permit the water to flow past the valve disk  326 , alongside of the ribs  324  and  342  to within the chamber  328 . This water will then be caused to move within the through passages  338  and  340  with through passage  338  connecting with tubing  384  and through passage  340  connecting with tubing  386 . When the conical connector  344  is installed on the forward tube  330 , the pointed portion of the closed end  362  is inserted within the through passage  332  forming a connection between the rigid tube  356  and the forward tube  330 . 
     Referring particularly to FIG. 11, the tubing  384  connects to a cylinder  388 . The cylinder  388  is mounted on the main arm  258 . In a similar manner, the tubing  386  connects to a cylinder  390 . The cylinder  390  is fixedly mounted to the main arm  256 . Movably mounted within the cylinder  388  is a piston  392  with there being a piston  394  mounted within cylinder  390 . The piston  394  is connected by piston rod  404  to arm member  270 . The tubing  386  is connected by a connector  396  to rigid tube  398  which is connected to the cylinder  390 . The rigid tube  398  is secured to the main arm  256 . 
     The reservoir  366 , in FIG. 14, is a bottom dispensing bag that does not include a tube that extends within the confines of the bag. The water is dispensed from the bag by gravity from the lower edge of the reservoir  366  in FIG. 14, which is different from the reservoir  366  in FIGS. 5,  6  and  9  where the water  376  is dispensed from the top edge of the reservoir  366 . 
     Arm member  268  is mounted by pivot joint  406  to the main arm  256 . In a similar manner, the main arm  258  is pivotally mounted to the arm member  270 . The pivot joints, such as  406 , permit the arm members  268  and  270  to be extended to an obtuse angle relative to the main arms  256  and  258 . The obtuse angle is shown in solid line position in FIG.  6 . With the movable section  254 , which is composed of main arms  256  and  258  in the obtuse position shown in FIG. 6, the pistons  392  and  394  are located within the lower end of their respective cylinders  388  and  390 . This has caused a sucking action to occur and water  376  is drawn from the reservoir  366  through the elastic bellows  352  and through the tubing  384  and  386  to within the cylinders  388  and  390 . Now when the user&#39;s forearm  274  begins to move toward the acute angle position shown in dotted lines in FIG. 6, the pistons  392  and  394  proceed to move toward the upper end of their respective cylinders  388  and  390 . This will cause water contained within the cylinders  388  and  390  to be moved forcefully under pressure to within chamber  328 . This water under pressure will cause valve disk  326  to be seated closing off through passage  332 . This water will then flow around the headed valve member  318  around the box end  302  to within the elastic bladder  292 . Water  376  then flows into internal chamber  386  and out through passage  284  and into flexible tube  280 . Water is not discharged from flexible tube  280  when hand held trigger valve assembly  408  is closed which is shown primarily in FIG.  12 . As a result, the elastic bladder  292  will expand, and when finally the elastic bladder  292  is expanded to the maximum configuration shown in FIG. 8, the barb end  298  will come in contact with the inner housing  294 . 
     As the elastic bladder  292  continues to expand just slightly, the valve stem  300  will cause the headed valve member  318  to be held in the open position, compressing coil spring  308 , permitting flow of water  376  between the tubing  384  and  386  and the elastic bladder  292 . With the elastic bladder  292  in the maximum expanded configuration of FIG. 8, and let it be assumed that the user  368  continues to exert a pumping action by moving of the user&#39;s forearm back and forth between the obtuse angular position, that the water  376  is being merely sucked from within the elastic bladder  292  and then pumped back into the elastic bladder  292  by the pistons  392  and  394 . No new water  376  is being conducted from the reservoir  366 . Therefore, the elastic bladder  292  does not further expand. 
     When the user  368  presses button  410  on the trigger valve assembly  408 , valve member  412  is moved away from seat  414  of the discharge passage  416  mounted within the discharge nozzle  418 . The valve member  412  is moved against the action of a coil spring  420 , which is mounted within the discharge valve housing  422 . The water  376  is caused to flow from the passage  282  of the flexible tube  280  into the internal chamber  424 , through discharge passage  416  to be discharged in the form of a stream of water from the discharge nozzle  418 . This will cause the internal volume and therefore the length of the elastic bladder  292  to decrease so that the barbed end  298  is now moved away from the inner housing  294  allowing coil spring  308  to push headed valve member  318  to a position which seats against seat  320  preventing the flow of water  376  from the elastic bladder  292  and into chamber  328 . When the user&#39;s forearm  274  is moved from the dotted fine position in FIG. 6 to the solid line position shown in FIG. 6, the pistons  392  and  394  will suck water from the reservoir  366  with this water not flowing into the elastic bladder  292  at this time because the pressure in the cylinders  388  and  390  is less than that in the elastic bladder  292 . Therefore, this water flows into the cylinders  388  and  390 . When the user&#39;s forearm  274  moves from the dotted fine position to the solid line position shown in FIG. 6, the water is forced from the cylinders  388  and  390  into the elastic bladder  292 , and when the cylinders  388  and  390  are substantially empty of water and the user&#39;s forearm  274  is again in the dotted line position shown in FIG. 6, the headed valve member  318  will again move to the seated position assuming that the elastic bladder  292  is not in the fully expanded configuration. Therefore, as the user&#39;s forearm  274  again moves from the dotted line position to the solid line position shown in FIG. 6, more water  376  will be drawn from the reservoir  366  displacing valve disk  326  and again filling the cylinders  388  and  390 . As the user&#39;s forearm  274  now moves again to the dotted line position in FIG. 6, the water that is contained within the cylinders again will be forced into the elastic bladder  292 . However, once the elastic bladder  292  is in the maximum expanded position as shown in FIG. 8, because the barb end  298  is placed in contact with the inner housing  294 , the valve stem  300  will position the headed valve member  318  in the continuously open position permitting free flow between the elastic bladder  292  and the cylinder  388  and  390 . This functions as a pressure relief device preventing over expansion of the elastic bladder  292  and rupture of such. 
     When the user  368  is not utilizing the third embodiment of the invention, the reservoir  366  with straps  370  and  372  can be separated from the base section  252  by physically disengaging conical connector  344  from the forward tube  330 . Immediately, the elastic bellows  352  will retract until the closed end  362  comes into tight abutting and fluid tight connection with the annular rib  348 . This will now prevent any water leaking from the reservoir  366 . When the user  368  desires to refill the reservoir  366 , it is only necessary to insert the outer end of the garden hose, which is not shown, or a faucet, which is also not shown, to within the outer portion of the connector  344  connecting with the outer portion of the connector  344  connecting with the central passage  346 . The pressure of the water from this source will unseat the closed end  362  from the annular rib  348  and expand somewhat the bellows  352 . This will permit water to flow from the source to within the reservoir  366  refilling such. 
     Referring particularly to FIG. 14, there is shown a further embodiment  426  of the resent invention with like numbers being utilized to refer to like parts. The main difference between this fourth embodiment  426  and the third embodiment  250  is that the discharge nozzle  428 , which connects to the flexible tubing  280  in the fourth embodiment  426 , is mounted on bracket  430 . The bracket  430  is fixedly mounted on the movable section  254 . Dispensing of the water through the discharge nozzle  428  is to be accomplished by a hand held trigger unit  432 , which operates a valve (not shown) associated with the discharge nozzle  428  by means of a flexible cable  434 . 
     Instead of using flexible bag type of reservoir  366 , there may be used a different form of solid wall reservoir which is shown as reservoirs  52  and  144 . FIGS. 15-21 are directed to different configurations of solid wall reservoirs that could be utilized in conjunction with the water gun of the present invention. 
     Referring particularly to FIGS. 15 and 16, there is shown embodiment  436  of the reservoir, which has a solid body  438 , and may be constructed of plastic. Within the solid body  438  is an internal chamber  440 . Mounted on the solid body  438  is a clip  442  that facilitates mounting by a strap  448  on the clothing of the user  368 . Water  444  is to be located within the internal chamber  440 . The inlet tube  364  is to connect with the solid body  438  directly adjacent the bottom  446  of the solid body  438 . Therefore, the water  444  is to flow by gravity to within the inlet tube  364  and then to the bellows  352 . 
     Formed within the solid body  438  is a fill opening  450 . Surrounding the fill opening  450  is an externally threaded connector  452 . A cap  454  is to be threadably mounted on the externally threaded connector  452 . The cap  454  defines a fill opening  456 . Mounted to the cap  454  is a mounting flange  458 . The mounting flange  458  is located within the internal chamber  440 . Pivotally mounted by pivot pin  460  onto the mounting flange  458  is a valve plate  462 . The valve plate  462  is under a continuous spring bias by a spring  464 , which tends to locate the valve plate  462  in abutting contact with the inner edge of the cap  454 , which closes the fill opening  456 . Therefore, the natural position of the valve plate  462  is to keep water  444  from spilling from the reservoir composed of the solid body  438 . However, upon insertion of the free end of a faucet or garden hose  466  to within the fill opening  456 , the force of the water being ejected therefrom will cause the valve plate  462  to deflect permitting the water  444  to flow within the internal chamber  440  filling such. Once the faucet or garden hose  466  is removed from the fill opening  456 , the bias of the spring  464  will automatically close the valve plate  462  against the cap  454  closing of the fill opening  456 . 
     Referring particularly to FIG. 17 and 18, there is shown an embodiment  468  of reservoir, which is basically similar to embodiment  436  and like numerals have been used to refer to like parts. The main difference is that mounted on the valve plate  462  and extending transversely therefrom is a large baffle plate  470  and two small baffle plates  472 , one located on each side of the large baffle plate  470  but spaced therefrom. Each of the baffle plates  470  and  472  have an arcuate periphery that assumes a domed configuration. When the faucet or garden hose  466  is moved against the baffle plates  470  and  472 , the valve plate  462  will readily deflect prior to the conducting from the faucet or garden hose  466  to within the internal chamber  440 . The baffle plates  470  and  472  will function to cause the valve plate  462  to deflect which will eliminate the possibility of any water shooting in an upward direction out of the fill opening  456 , which might occur with the embodiment  436 . 
     Referring particularly to FIGS. 19-21, there is shown a still further embodiment  474  of reservoir with again like numerals being used to refer to like parts. The valve plate  476  has mounted thereon the baffle plates  470  and  472  but here the valve plate  476  is not hingedly mounted but is permitted to only move lineally against the action of a coil spring  478 . Mounted onto valve plate  476  is a sleeve extension  475 . Sleeve extension  475  has a series of holes  477 . The coil spring  478  is mounted in conjunction with a cage  480 . Within the cage  480  is located a series of holes  482 . When the faucet or garden hose  466  is moved against the baffle plates  470  and  472 , the valve plate  476  is lineally displaced compressing of coil spring  478 . The cage  480  is to be formed as part of the cap  454  and has replaced the mounting flange  458 . When the faucet or garden hose  466  is displaced against the valve plate  476 , the water  444  is to flow from the faucet or garden hose  466  past the baffle plates  470  and  472 , past the valve plate  476 , through the holes  477  and  482  to within the internal chamber  440 . Upon release of the faucet or garden hose  466  from the fill opening  456 , the valve plate  476  will move automatically due to the action of the coil spring  478  to close the fill opening  456  and be located directly adjacent the cap  454 . 
     Note that these reservoir fill embodiments, as illustrated in FIGS. 15-21, also serve as an air vent so that s water  444  is withdrawn from reservoir internal chamber  440  the small vacuum thus created partially pulls open valve plate  476  thus equalizing internal pressure with ambient pressure. Also note that these same reservoir fill embodiments may be used in conjunction with flexible walled reservoir  366 . 
     Numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the attendant claims attached hereto, this invention may be practiced otherwise than as specifically disclosed herein.