Patent ID: 6431051
Filing Date: 2002-08-13
Classification: B22F,F04B,F16J

Abstract:
A piston for a cylinder block of a hydrostatic power unit, comprising:an elongated cylindrical body having first and second ends, an elongated cavity in the body with first and second ends with the second end thereof being open and terminating within a transverse plane passing through the second end of the body, a cap formed separately from the body and secured to and closing the second end of the cavity to seal and close the cavity, the cap having an external shape to facilitate the operative engagement thereof with a slipper engaged with a swashplate mounted adjacent the cylinder block, wherein the cap has a tapered surface on the inner end engaging a compatibly shaped surface on the second end of the body to center and align the cap with the body, wherein the tapered surfaces of the body and the cap align center axes of the body and the cap, wherein the tapered surfaces of the cap and the body terminate in parallel wall surfaces to create a continuous arcuate interface therebetween, and an adhesive material inserted in the arcuate interface to rigidly secure the cap to the body.