Borgwarner Inc.

Adam C Hunt

Keith B Cobb

Paul Freemantle

Seongdo Hong

Robert G Williamson

A hydraulic tensioner for an internal combustion engine for tensioning a span of a chain or a belt has a piston with an internal reservoir connected to a high pressure chamber through a check valve assembly. The check valve assembly has a disk seat formed by an internal bulge within the piston; a check valve retainer within the piston, and a moveable disk that is received between the disk seat formed by the internal bulge and the check valve retainer and is moveable between a first position and a second position, and a check valve spring that is received between the check valve disk and the check valve retainer.

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Brooktondale, NY, United States of America

Adam C Hunt