Patent ID: 7331272
Filing Date: 2008-02-19
Classification: F04B,Y10T

Abstract:
1. A multiple-stroke hydrostatic axial piston machine comprising: a plurality of piston-shaped displacement bodies each longitudinally movable in a displacement chamber, wherein the displacement bodies are supported by a roller body on a track that is provided with axial cams that generate a reciprocal motion, wherein each of the roller bodies is a roller which is located in a recess of the displacement body that restricts radial and axial relative movements of the roller with respect to the displacement body, wherein the displacement body is in the form of a cage of the roller, wherein the roller is a cylindrical or barrel roller, and wherein the displacement body has a first piston segment that holds the roller and a second hydraulically pressurizable piston segment with a smaller diameter than that of the first piston segment.