US 4,066,003 A · Hydraulic engine

Abstract

A hydraulic engine having a frame on which a crankshaft is rotatably mounted between a plurality of cylinders. The individual cylinders are rockingly mounted on the frame arranged as opposed pairs of cylinders and their piston rods are operatively connected to cranks positioned 90.degree. apart upon the crankshaft. A power take-off shaft is also journalled on the frame and a drive train operatively connects the crankshaft to the power take-off shaft. The cylinders are connected by a fluid circuit to a motor-driven pump and included in the circuit are individual distribution valves for the cylinders. Operating plungers of the valves are connected by rods to eccentrics carried by the crankshaft and circumferentially positioned to extend and retract the several piston rods in a sequence which will rotate the crankshaft and deliver usable power to the takeoff shaft.

Claims4

Dependent claims

A hydraulic engine comprising a frame, a crankshaft journalled on the frame, hydraulic cylinders arranged on the frame as horizontally opposed and side-by-side pairs, a piston rod for each cylinder operatively connected to the crankshaft, trunnion means individually securing each cylinder to the frame whereby adjacent cylinders of each pair of cylinders are rockable about a common axis extending parallel to the crankshaft, a power take-off shaft journalled on the frame, a drive train operatively connecting the crankshaft to the power take-off shaft, a fluid circuit connecting the hydraulic cylinders to a source of pressurized fluid and including a distribution valve for each of said cylinders, and motion transmitting means connecting the crankshaft to the distribution valves whereby opposite ends of the hydraulic cylinders are pressurized sequentially to extend and retract the piston rods and rotate said crankshaft.

Dependencies are inferred from the claim text.

Hydraulic engine

Life of this patent

Hydraulic engine

Life of this patent

Abstract

Claims4