Abstract: A constant velocity universal joint wherein the relatively moveable components are substantially contained within a cup-like housing having an open end. A spherical enlargement on the input shaft provides a sealing surface which may be sealed with relatively conventional seals. A concavo-convex connecting link is interconnected with both the input shaft and with the output shaft through interconnected arcuate T-shaped tongues and grooves which extend concentrically to the spherical enlargement surface to permit the joint components to maintain proper position at all times.

Abstract: A hydraulic pump/motor in which working piston elements are arranged for radial reciprocation. A cam is arranged eccentrically to a rotor which carries the pistons. Fluid cavities are provided in feet on the pistons, in the faces of a polygon to which the feet are attached, and in bearing pads in the outer ends of the cylinders to provide hydrostatic balancing. The pistons are hollow and are equipped with check valves to prevent centrifugal force from expelling fluid from the polygon and foot cavities. The cam includes mating spherical surfaces which compensate for bending forces applied to the cam. An improved mechanism for adjusting the cam position uses inherent forces to eliminate the need for a power assist device for cam adjustment. Port plates on opposite sides of the rotor provide inlet to the unit near the axis of the unit and outlet near the outer edge to alleviate stresses and increase efficiency.

Abstract: A hydraulic pump/motor in which working piston elements are arranged for radial reciprocation. A cam is arranged eccentrically to a rotor which carries the pistons. Fluid cavities are provided in feet on the pistons, in the faces of a polygon to which the feet are attacahed, and in bearing pads in the outer ends of the cylinders to provide hydrostatic balancing. The pistons are hollow and are equipped with check valves to prevent centrifugal force from expelling fluid from the polygon and foot cavities. The cam includes mating spherical surfaces which compensate for bending forces applied to the cam. An improved mechanism for adjusting the cam position uses inherent forces to eliminate the need for a power assist device for cam adjustment. Port plates on opposite sides of the rotor provide inlet to the unit near the axis of the unit and outlet near the outer edge to alleviate stresses and increase efficiency.

Abstract: A hydraulic pump or motor having a rotor carrying radially disposed pistons. In one embodiment, the connection for introducing and withdrawing fluid at the rotor is made by manifolds which are in complemental, sliding contact against a surface of the rotor. Piston-like projections on the manifold are exposed to the pressurized fluid flowing through the apparatus to hold the manifolds in tight sealing engagement against the rotor surface. The effects of centrifugal force on the operation of the apparatus are minimized by mechanically securing the pistons against outward radial movement during high speed rotation, and by admitting and withdrawing fluid at locations relatively near the axis of rotation of the rotor. An alternate embodiment is disclosed which has a floating rotor so that the pressure of the operating fluid is used to effect a tight seal at the junction of the stationary and rotating components in the high pressure region.