Importance

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Abstract

Provided are tensioners to tension a closed loop chain of a chain drive system. The tensioners can include a housing with an open end, an enclosed end opposite the open end including an inlet supply, a bore extending from the open end to an area directly above the inlet supply to form a housing seat, a movable sleeve formed in the housing bore having an open end adjacent the open end of the housing, a closed end in contact with the housing seat, a sleeve bore extending from the open end to the closed end and a controlled inlet formed through the closed end thereof, a hollow piston disposed in the sleeve bore and a spring disposed in the piston bore to apply a bias on the piston outward from the sleeve bore.

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First Claim