Water gun

Abstract

A water gun comprising a pressure tank, a nozzle, a tube and valve with a valve conduit has an increased shooting range if the pressure tank has an outlet being connected to an inlet of the tube, the tube has an outlet being connected to an inlet port of the valve conduit and an outlet port of the valve conduit is in fluid communication with the nozzle.

1 . A toy water gun comprising at least: a pressure tank, a nozzle, a tube, and a valve with a valve conduit and a valve drive coupled to a valve stem comprising:
 the pressure tank having an outlet being connected to an inlet of the tube,   the tube having an outlet being connected to an inlet port of the valve conduit, and   an outlet port of the valve conduit is in fluid communication with the nozzle,   
       wherein the valve drive comprises a body and an electromagnet, which is configured to attract the body, when connected to a power source. 
     
     
         2 . The water gun of  claim 1 , further comprising:
 the valve conduit including a valve seat in between the inlet port and the outlet port;
 the movable valve stem including a valve plug, wherein the valve stem
 defines a first longitudinal axis, 
 and has a closed position in which the valve plug closes the valve seat and an open position in which the valve plug is retracted to enabled a fluid flow through the valve seat; and 
 
 the tube having a tube wall, wherein the tube wall provides a linear bearing, 
 wherein the linear bearing
 movably supports the valve stem relative to the tube wall, enabling a translation along a longitudinal axis of the valve stem, 
 sealingly attaches to the valve stem, and 
 defines a through hole via which the valve stem extends through the tube wall. 
 
   
     
     
         3 . The water gun of  claim 1 , wherein that the tube has a first section and a second section, wherein the first section has a first continuously curved neutral phase the second section has a second continuously curved neutral phase, and the two curvatures have opposite signs. 
     
     
         4 . The water gun of  claim 2 , wherein the through hole being defined by the linear bearing is located in an area of the tube wall, which is in the vicinity of the change of the sign of the curvature of the neutral phase of the tube, wherein the vicinity is defined as with 25% of the length of the tube. 
     
     
         5 . The water gun of  claim 1 , wherein the net cross sectional area of the tube along the length of the tube is constant within 15% of the mean cross sectional area of the tube, and wherein the cross sectional area of the valve stem does not contribute to the net cross sectional area of the tube. 
     
     
         6 . The water gun of  claim 1  wherein
 the body is movably supported and configured to be shifted by the valve drive at least substantially parallel ±15°, to the longitudinal axis defined by the stem from a start position via an intermediate position to an end position, wherein the body and the valve stem are coupled via a position selective coupling, and wherein the position selective coupling is configured to selectively couple the body to the valve stem when the body is at the intermediate position while the body moves from the start position to the end position. 
 
     
     
         7 . The water gun of  claim 6 , wherein the body is spring biased into its start position. 
     
     
         8 . The water gun of  claim 6 , wherein the valve drive is configured to drive the body. 
     
     
         9 . The water gun of  claim 6 , wherein
 the valve stem is spring loaded against the body towards its open position, at least when the body is in its end position.   
     
     
         10 . The water gun of  claim 9  wherein
 the body is spring loaded towards its start position, at least when the body is in its end position. 
 
     
     
         11 . The water gun of  claim 7  wherein
 the biasing force of the body at its start position against a movement in the direction of the end position is greater than a biasing force of the valve stem towards its open position in its closed position and in that the body in its start position at least indirectly abuts against the valve stem forcing the valve stem into its closed position, if the valve drive is shut off. 
 
     
     
         12 . The water gun of  claim 1  wherein
 the valve drive is configured for shifting the valve stem from its closed position into its open position and/or back from its open position into its closed position. 
 
     
     
         13 . The water gun of  claim 6  wherein
 the position selective coupling comprises a movably supported follower, 
 linear bearing movably couples the body and the follower, wherein the linear bearing enables the body and the follower to translate relative to each other, wherein the translation is parallel to the longitudinal axis, 
 an abutment being defined by a surface of the follower or the body is configured to limit the axial movement of the body relative to the follower, when the body moves from its start position to an intermediate position and or from the body's end position to the body's start position, and 
 the follower is attached to or integrally formed with the valve stem. 
 
     
     
         14 . The water gun of  claim 13 , wherein the linear bearing movably coupling the body and the follower comprises:
 at least one slot having a length extending parallel to the longitudinal axis, wherein the at least one slot is integrated in or attached to the follower, and   at least one protrusion of the body movably engages into the slot.   
     
     
         15 . The water gun of  claim 13  wherein the linear bearing movably coupling the body and the follower comprises:
 at least one slot having a length extending parallel to the longitudinal axis, wherein the at least one slot is integrated in or attached to the body, 
 at least one protrusion of the follower movably engages into the slot. 
 
     
     
         16 . The water gun of  claim 6  wherein
 the mass of the body is at least as great as the sum of the masses of the valve stem and the follower. 
 
     
     
         17 . The water gun of  claim 1  the water gun further comprising:
 refill opening; 
 a pump having a low-pressure end and a high-pressure end, wherein the low-pressure end is in fluid communication with the refill opening or with a water reservoir; and 
 the high-pressure end is connected via a duct to an opening in the side wall of the tube. 
 
     
     
         18 . The water gun of  claim 2 , wherein that the tube has a first section and a second section, wherein the first section has a first continuously curved neutral phase the second section has a second continuously curved neutral phase, and the two curvatures have opposite signs. 
     
     
         19 . The water gun of  claim 18 , wherein the through hole being defined by the linear bearing is located in an area of the tube wall, which is in the vicinity of the change of the sign of the curvature of the neutral phase of the tube, wherein the vicinity is defined as with 25% of the length of the tube. 
     
     
         20 . The water gun of  claim 2 , wherein the net cross sectional area of the tube along the length of the tube is constant within 15% of the mean cross sectional area of the tube, and wherein the cross sectional area of the valve stem does not contribute to the net cross sectional area of the tube.