Patent ID: 6210131
Filing Date: 2001-04-03
Classification: F04B

Abstract:
A fluid driven reciprocating apparatus, comprisinga power cylinder having a double acting piston therein,a pair of cylinders on opposite sides of said power cylinder and in open fluid communication therewith,a pair of signal rods mounted on opposite sides of said double acting piston and extending into said pair of cylinders,each of said pair of signal rods having at least one member thereon, each of said members being adapted to reciprocate in one of said pair of cylinders,a pair of intake/exhaust valve assemblies having a valve member therein, for controlling passage of fluid through said power cylinder,each of said intake/exhaust valve assemblies being in fluid communication with said power cylinder on an opposite side of said double acting piston, and with one of said pair of cylinders,each of said intake/exhaust valve assemblies having an exhaust port, and an intake port adapted to be connected to a source of driving fluid.