Piston and method for reducing wear

Details Piston and method for reducing wear Piston and method for reducing wear

1995-06-07

2000-01-25

Denion, Thomas E.

Expansible chamber devices

Piston

92 71, F16J 100

Patent

active

060167394

ABSTRACT:
This invention relates to a piston for reciprocating and simultaneously rotating through a predetermined length of movement within a piston bore having a piston bore surface, and a method for reducing wear on a piston bore surface operatively associated with a piston which is subject to cocking forces. The piston includes a means on its extreme portion for providing continuous, tangential cooperation with the piston bore surface within the predetermined length of piston movement to reduce wear on the piston bore surface.

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