Hydraulic motor/pump
AssigneeHydrostatic Design Technology Pty Ltd
InventorGarth Davey
Life of this patent
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Abstract
A hydraulic machine which can exchange hydraulic fluid pressure with rotational motion of an input/output means, having a radial arrangement of a plurality of hydraulic piston and cylinder assemblies about a crankshaft, the hydraulic cylinder and piston assemblies being longitudinally spaced along the crankshaft; and a means for varying eccentricity of the crankshaft whereby reciprocal motion of the pistons within the respective hydraulic cylinders is consequential to rotational motion of the crankshaft about the longitudinal axis of the crankshaft.
Claims16
A hydraulic machine which can exchange hydraulic fluid pressure with rotational motion of an output means, the hydraulic machine having a radial arrangement of a plurality of piston and a cylinder assemblies about at least one crankshaft coupled to the output means, the cylinder and piston assemblies being longitudinally spaced along the crankshaft;
- and means for varying the eccentricity of the crankshaft to cause the stroke length of the pistons to be varied between zero and the maximum length of the stroke.
Dependencies are inferred from the claim text.