Water cannon toy or like device

A water gun comprising an elongated hollow body substantially closed at one axial end thereof to define a body chamber;

• a piston slidably positioned within said body chamber and conforming to the shape thereof for axial movement therein, said piston and said body defining a liquid receiving reservoir, said piston being slidable relative to said body from one axial end of said body chamber to the other axial end thereof;
• a piston rod having an inner end connected to said piston, and an outer end projecting from said body;
• a flexible tube positioned internally of said piston rod, said piston having a liquid passage therein in fluid communication with said reservoir and with one end of said flexible tube, and an orifice in fluid communication with the other end of said flexible tube;
• manual actuating means operatively connected to said piston and operable to cause relative axial movement between said piston and said body from said one axial end of said body chamber to said other axial end thereof whereby liquid in said reservoir will be ejected through said orifice in a continuous stream;
• said manual actuating means including means operatively connected to said piston rod, said manual actuating means including a manually operable hand crank rotatably mounted on said body, said crank including a crank shaft projecting within said body adjacent said piston rod, a toothed gear fixedly mounted on said crank shaft, and means including tooth contacting surfaces formed along a length of said piston rod engageable with said toothed gear whereby rotation of said hand crank causes axial movement of said piston rod and said piston in said body chamber to change the volume of the reservoir.

A water gun comprising an elongated hollow body substantially closed at one axial end thereof to define a body chamber;

• a piston slidably positioned within said body chamber and conforming to the shape thereof for axial movement therein, said piston and said body defining a liquid receiving reservoir, said piston being slidable relative to said body from one axial end of said body chamber to the other axial end thereof;
• a piston rod having an inner end connected to said piston and an outer end projecting from said body, said piston rod including an elongated tubular member having a tubular liquid passage therethrough of reduced size at the outer end thereof providing an orifice, said piston having a liquid passage therethrough in fluid communication with said reservoir and with the liquid passage through the piston rod and said orifice;
• and
• manual actuating means operatively connected to said piston rod and operable to enable relative axial movement between said piston and said body from said one axial end of said body chamber to said other axial end thereof whereby substantially all of the liquid in said reservoir may be ejected through the passage in the piston rod,
• said manual actuating means including a manually operable hand crank rotatably mounted on said body, said crank including a crank shaft projecting within said body adjacent to said piston rod, a toothed gear fixedly mounted on said crank shaft, tooth contacting surfaces including a plurality of spaced tooth receiving slots formed along a length of said piston rod for cooperating with said toothed gear whereby rotation of said hand crank causes axial movement of said piston rod and said piston through said body chamber to change the volume of the reservoir.