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US 2014/0298986 A1Published application
Piston assembly
OwnerThomas Blaszczykiewiczinventor
Life of this patent
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Abstract
A piston assembly having a piston member with a removable wear sleeve and a method for removing and replacing the same having a center pin extending at least partially through the sleeve, a housing engaging the sleeve, and a mandrel engaging the center pin and the sleeve that may be removed to allow for the replacement of the sleeve while the piston member is in service.
Claims2
What is claimed is:
- A piston assembly, comprising:
- a ceramic sleeve having a first end and a second end;
- a center pin extending at least partially through the sleeve;
- a housing engaging the sleeve at the first end;
- and
- a mandrel engaging the center pin and sleeve at the second end;
- wherein the mandrel may be disengaged to allow removal and replacement of the sleeve.
4 more elements
A method of replacing a piston assembly, comprising:
- a) releasing a mandrel from a center pin;
- b) removing a worn sleeve from the piston assembly;
- c) attaching a new sleeve to the piston assembly;
- and
- d) attaching the mandrel back onto the center pin.
2 more elements
Dependencies are inferred from the claim text.