Toy Gun With Pneumatic to Hydraulic Pressure Magnifier

Abstract

A toy gun includes a hydraulic cylinder, a nozzle from which water from the hydraulic cylinder can be expelled, and a hydraulic piston movable in the hydraulic cylinder. The hydraulic cylinder is of a certain surface area. A pneumatic piston is movable in a pneumatic cylinder and is connected to the hydraulic piston. The pneumatic piston has a surface area that is larger than that of the hydraulic piston. Upon triggering, compressed air is delivered to the pneumatic cylinder and pressure induced in the hydraulic cylinder is magnified substantially by the ratio of the two surface areas.

1 . A toy gun, comprising:
 a hydraulic cylinder;   a nozzle from which water from the hydraulic cylinder can be expelled;   a hydraulic piston movable in the hydraulic cylinder and having a hydraulic surface area;   a pneumatic cylinder;   a pneumatic piston movable in the pneumatic cylinder and connected to the hydraulic piston, the pneumatic piston having a pneumatic surface area that is larger than the hydraulic surface area; and   means for presenting compressed air to the pneumatic cylinder.   
     
     
         2 . The toy gun of  claim 1 , further comprising a reservoir for receiving water and compressed air above the water, and an inlet valve enabling one-way flow of water from the reservoir to the hydraulic cylinder. 
     
     
         3 . The toy gun of  claim 2 , further comprising a priming pump for compressing the air above the water in the reservoir. 
     
     
         4 . The toy gun of  claim 3 , further comprising a fluid switch adapted upon trigger-activation to release compressed air from the reservoir to the pneumatic cylinder. 
     
     
         5 . The toy gun of  claim 4 , further comprising a conduit extending between the priming pump and the reservoir, and wherein the fluid switch communicates air from a conduit to the pneumatic cylinder. 
     
     
         6 . The toy gun of  claim 5 , further comprising a trigger acting upon the fluid switch. 
     
     
         7 . The toy gun of  claim 1 , further comprising a nozzle valve activated by the trigger. 
     
     
         8 . The toy gun of  claim 1 , wherein the pneumatic piston is linked or connected to the hydraulic piston by a connecting rod.