Tire stud gun with rotary valve

Claim 1

In a tire stud gun for inserting a tire stud into a blind bore in a vehicle tire, said tire stud gun including housing means communicating with a supply of studs and having a handle thereon, piston means including piston and a piston rod for moving a stud from the housing and pushing same into the blind bore in the vehicle tire, a chamber being defined between the piston and said housing means, said piston actuator being urged outwardly from the housing by introduction of pressure fluid into said chamber and being returned to its starting position by spring means, and control means for actuating the piston means, characterized by the control means comprising an end body on said housing means having an inlet opening and an exhaust opening, there being a central bore in said end body, a rotary valve body disposed in said central bore for rotation therein, a longitudinal bore in said rotary valve body and a first and a second transverse bore communicating therewith, the longitudinal bore being adapted to communicate with said chamber and plunger means in said inlet opening and said exhaust opening in sealing relationship with the exterior surfaces of said rotary valve body.