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US 2010/0139928 A1Published application
Replaceable sleeve for a cylinder liner
AssigneeNational Oilwell Varco, L.P.
InventorsAndrew Dale Riley, Clifton D. Eggleston
Life of this patent
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Abstract
A pump cylinder liner apparatus includes a replaceable sleeve captured between two cylinder hull portions that are releasably coupled to allow access to the sleeve for replacement. An elastomeric material or tube may be disposed between the sleeve and the two coupled hull portions for radial compressive pre-loading of the sleeve upon assembly and during operation.
Claims19
A pump cylinder liner apparatus comprising:
- a cylinder housing including a first hull portion and a second hull portion;
- and
- a replaceable sleeve disposed in the cylinder housing;
- wherein the first and second hull portions are releasably coupled to capture the replaceable sleeve in the cylinder housing;
- and
- wherein the first and second hull portions are releasable to provide access to the replaceable sleeve.
3 more elements
A pump cylinder liner apparatus comprising:
- a first cylinder hull portion;
- a second cylinder hull portion;
- a replaceable sleeve;
- and
- an elastomeric tube disposed about the replaceable sleeve;
- wherein the first and second cylinder hull portions are releasably coupled to capture the replaceable sleeve and compress the elastomeric tube.
3 more elements
A method for replacing a sleeve in a pump cylinder liner apparatus comprising:
- providing a cylinder housing with a first hull portion and a second hull portion;
- capturing a replaceable sleeve between the first and second hull portions;
- and
- releasably coupling the first and second hull portions about the replaceable sleeve.
1 more element
Dependencies are inferred from the claim text.