Patent ID: 9273780
Filing Date: 2016-03-01
CPC Classification: F04B,F16J

Claim Text:
1. A sliding block for a piston of a hydraulic piston machine, comprising: a concave recess structure to receive and directly contact portions of a piston head; a sliding surface to support the piston; and a lubricant channel structure which passes through the sliding block from the concave recess structure to the sliding surface, wherein the sliding block has a one-piece configuration and defines the concave recess structure, the sliding surface, and the lubricant channel structure as integrally formed features thereon, wherein the lubricant channel structure includes a continuously narrowing taper segment with a transition segment having a convex curvature, wherein the concave recess structure transforms directly into the convex transition segment at a transition point with the convex transition segment and the concave recess structure having an identical tangent at the transition point, wherein a curvature of a casing curve of the taper segment is everywhere greater than zero or equal to zero, wherein the convex transition segment transforms into a connecting segment of the constantly narrowing taper segment, and wherein the casing curve along the connecting segment comprises a line or an elliptical arc segment or a circular arc segment.