Hydraulic tensioner with passage of variable cross-section between the piston and bore

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United States of America Patent

PATENT NO 6053831
SERIAL NO

09207843

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Importance

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Abstract

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A hydraulic chain tensioner has a fluid leakage passageway along the outside of the piston surface that has a variable cross-section. The tensioner has a tapered or stepped geometry in either the bore of the tensioner or in the piston or both the bore and the piston. Due to the unique geometry, friction is reduced, flow leakage is controlled, and the wear of the tensioner is improved.

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Patent Owner(s)

Patent OwnerAddress
BORG-WARNER AUTOMOTIVE INC6700 18 1/2 MILE ROAD P O BOX 8022 STERLING HEIGHTS MICHIGAN 48311-8022

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boedo, Stephen Ithaca, NY 4 40

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