Patent ID: 9644481
Date: 2017-05-09
CPC Classifications: F01C,F04C

Claim:
1. A hydraulic device comprising: a housing; and a gerotor contained within the housing, the gerotor having an inner rotor eccentrically disposed within an outer ring; wherein the outer ring has a central axis, the outer ring being stationary and fixed to the housing; the inner rotor having external lobes extending radially outwardly engaging the outer ring having internal lobes extending radially inwardly, the inner rotor being arranged for orbital and rotational movement relative the outer ring, wherein the orbital and rotational movement will define a plurality of expanding and contracting volume pressure chambers between the inner rotor and the outer ring; wherein the hydraulic device comprises a fluid feeder tube with a central axis common with the central axis of the outer ring, the fluid feeder tube is provided with at least one fluid inlet line and at least one fluid outlet line; the inner rotor slides against a drive shaft cylinder, the drive shaft cylinder is connected to a drive shaft that has an axis of rotation aligned with the central axis of the outer ring, the drive shaft cylinder having a circumference which is eccentrically disposed relative the central axis of the outer ring, the inner rotor comprises at least one radial fluid feeder channel disposed radially from the centre of and through the inner rotor and out to at least one of the plurality of expanding and contracting volume pressure chambers; wherein said fluid inlet line and said fluid outlet line respectively are radially connectable to said at least one radial fluid feeder channel for fluid communication into and out from said expanding and contracting volume pressure chambers; and wherein flow though through the at least one fluid inlet line is in an opposite direction from flow through the at least one fluid outlet line.