Patent ID: 8082837

Claim:
A control system for a reciprocating device, the control system comprising: (a) a switching valve having a fluid supply inlet, an exhaust outlet, a first drive line, and a second drive line, wherein the valve is operable to connect one of the exhaust outlet and the fluid supply inlet to the first drive line and to connect one of the exhaust outlet and the fluid supply inlet to the second drive line; (b) a toggle for operating the valve, wherein the toggle is movable between a first position in which fluid flow is from the fluid supply inlet to the first drive line, and from the second drive line to the exhaust outlet, and a second position in which fluid flow is from the fluid supply inlet to the second drive line, and from the first drive line to the exhaust outlet; (c) a reciprocating device that is operable to move in a first direction due to fluid pressure in the first drive line and a second direction opposite the first direction due to fluid pressure in the second drive line; (d) a trigger disposed on the reciprocating device being operable to move the toggle into the first position when the reciprocating device is moving in the second direction, and to move the toggle into the second position when the reciprocating device is moving in the first direction; and (e) a connector disposed between the toggle and the trigger.