Reciprocating pump having a piston assembly

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United States of America Patent

PATENT NO 8561523
APP PUB NO 20100074780A1
SERIAL NO

12596906

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Abstract

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A reciprocating pump including a piston is disclosed. In some embodiments, the piston includes an annular hub, a flexible sealing element coupled to an outer surface of the hub, and a sleeve seated on the outer surface of the hub adjacent the sealing element. The sleeve is axially moveable relative to the hub to compress the sealing element. The sealing element includes a lip, which is displaced radially outward when the sleeve compresses the sealing element.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
NATIONAL OILWELL VARCO L P7909 PARKWOOD CIRCLE DRIVE HOUSTON TX 77036

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Riley, Andrew Dale Eufaula, US 9 154
Weaver, Randall Ferrain Haywood, US 12 213

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