Patent ID: 9080559
Filing Date: 2015-07-14
Classification: F01B,F04B

Abstract:
1. A radial cylinder hydraulic motor comprising: a plurality of cylinder-piston groups comprising a plurality of pistons and a plurality of oscillating cylinders, and in proximity to an outer skirt of the cylinder-piston groups, the pistons slide on a shaft, and create alternate motion in the oscillating cylinders, wherein a respective surface of oscillation for each cylinder of the groups, in proximity to the outer skirt, is constituted by a portion of a cylindrical surface with an axial direction parallel to an axis of rotation of the shaft and positioned in a part of the outer skirt including a diametral plane of the cylinder-piston groups, wherein a contact between a cylindrical support surface of a bottom plate of each cylinder on the portion of a cylindrical surface of oscillation happens because of the thrust created by a thrust device which acts on a side of the cylinders and is placed against plane surfaces of sliding walls that are parallel to each other and to the diametral plane of said cylinder-piston groups, and wherein the thrust device, on the cylinder for the contact, comprises a ring equipped with flaps or grooves which are curved, in relation to the axis of curvature of the portion of a cylindrical surface of oscillation of each cylinder, according to a respective radius of curvature on the thrust device, the ring urging all cylinders of the cylinder-piston groups.