Reduced leakage balance piston seal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9279324
APP PUB NO 20130149101A1
SERIAL NO

13675368

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Abstract

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Balance piston assembly, apparatus, and methods are provided. The assembly includes a balance piston coupled to a rotatable shaft and configured to rotate therewith, the balance piston including a first shelf and a second shelf, the first and second shelves being axially-overlapping and radially-offset. The assembly also includes a seal including a first sealing surface configured to seal with the first shelf and a second sealing surface configured to seal with the second shelf.

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Patent Owner(s)

Patent OwnerAddress
DRESSER-RAND COMPANYPAUL CLARK DRIVE OLEAN NY 14760

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clute, Stephen G Cuba, US 1 6
Grosso, Glenn R Olean, US 4 20
Kuzdzal, Mark J Allegany, US 19 87
Peer, David J Olean, US 19 181

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