Integrated electric motor driven inline hydraulic apparatus

An integrated electric motor driven inline hydraulic apparatus comprising

• a housing,
• an electric motor having a stator fixed to said housing and a rotor surrounded by said stator,
• a positive displacement hydraulic pump comprising a cylinder block supported on bearings in said housing,
• a plurality of circumferentially spaced through bores in said cylinder block,
• a pair of opposing pistons reciprocable in each cylinder bore,
• each said pair of pistons defining a chamber therebetween,
• a yoke having an inclined surface engaged by one of each said pairs, of pistons and a valve plate having an inclined surface engaged by the other of each said pair of pistons,
• said pistons extending from said cylinder block to cooperate with said inclined surfaces to induce reciprocation of said pistons with cylinder block rotation, and
• valve means adapted to alternately connect the chambers between said opposing sets of pistons with a fluid inlet and a fluid outlet during cylinder block rotation,
• said rotor being coaxially mounted on said cylinder block such that as the rotor is rotated the cylinder block is rotated inducing axial reciprocation of the pistons,
• said housing having a hydraulic fluid inlet adjacent one end thereof such that hydraulic fluid from said inlet flows over the stator, air gap between the stator and rotor and over the rotor,
• said pump having an inlet such that hydraulic fluid therefor flows to the inlet of said pump,
• said pump having an outlet of hydraulic fluid from the pump to the hydraulic system supplied by said pump.