Pump or motor device

Claim 1

IN A HYDRAULIC FLUID TRANSLATION DEVICE INCLUDING A HOUSING, A ROTATABLE CYLINDER BLOCK IN SAID HOUSING HAVING A PLURALITY OF PISTONS WITH INNER ENDS DISPOSED FOR RECIPROCATION WITHIN CYLINDERS IN THE BLOCK, CYLINDERS PORTS COMMUNICATING EACH OF SAID CYLINDERS WITH ONE END OF SAID CYLINDER BLOCK, AND INLET AND OUTLET PASSAGE COMMUNICATING EXTERIORLY OF SAID HOUSING, A BEARING PLATE MOUNTED ON SAID ONE END OF THE CYLINDER BLOCK FOR ROTATION THEREWITH AND HAVING AN OPENING THERETHROUGH IN ALIGNMENT WITH EACH OF SAID CYLINDER PORTS, A PORT PLATE MOUNTED ON SAID HOUSING AGAINST ROTATION WITH THE CYLINDER BLOCK AND HAVING ELONGATE GENERALLY ARCUATE OPENINGS THERETHROUGH COMMUNICATING RESPECTIVELY WITH SAID INLET AND OUTLET PASSAGES, RELATIVELY ROTATABLE AND STATIONARY BEARING SURFACES ON SAID BEARING PLATE AND PORT PLATE, RESPECTIVELY, FOR ROTATION OF SAID CYLINDER BLOCK WITH RESPECT TO SAID HOUSING WITH SAID CYLINDER PORTS COMMUNICATING SUCCESSIVELY WITH SAID INLET AND OUTLET, AND RESILIENT MEANS URGING SAID BEARING SURFACES TO BEAR AGAINST EACH OTHER, THE IMPROVEMENT WHICH COMPRISES SUPPORT MEANS DISPOSED ACROSS EACH OF THE ELONGATE ARCUATE OPENINGS OF SAID PORT PLATE, PORT MEANS GENERALLY VERTICAL THROUGH SAID STATIONARY BEARING SURFACE IN ARCUATE ALIGNMENT WITH THE ARCUATE OPENING LATERALLY OF SAID ARCUATE OPENING AND COMMUNICATING INTERIORLY WITH SAID ARCUATE OPENING, RAISED LAND MEANS ON THE OPPOSING SURFACE OF SAID BEARING PLATE SURROUNDING SAID OPENINGS THERETHROUGH, OUTER AND INNER GENERALLY ANNULAR LANDS ON ONE OF SAID BEARING SURFACES DEFINING A GENERALLY ANNULAR GROOVE THEREBETWEEN, OUTWARD EXTENSION OF SAID ANNULAR GROOVE INTO THE OUTER LAND, POCKET MEANS IN SAID OUTER LAND DISPOSED AXIALLY FROM SAID RADIAL EXTENSION AND ADAPTED TO RECEIVE, HOLD AND DISTRIBUTE HYDRAULIC FLUID FROM THE RADIAL GROOVE EXTENSION ON THE BEARING SURFACES, AND PASSAGE MEANS FROM SAID ANNULAR GROOVE THROUGH SAID BEARING PLATE AND RADIALLY ADJACENT SAID CYLINDER BLOCK OR DIRECTING HYDRAULIC FLUID TO SAID HOUSING RADIALLY OF SAID CYLINDER BLOCK.