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US 6,375,587 B1Granted
Timing chain having multiple blade tensioners contacting the same section of chain
AssigneeBorgWarner Inc.
InventorMark M. Wigsten
Life of this patent
Estimating the term…
Abstract
A chain drive is provided which includes a chain, a driven sprocket and a drive sprocket. A single portion of the chain is tensioned by two spring tensioners. The spring tensioners can act on a single side of the chain portion or on opposite sides of the chain portion.
Claims9
An apparatus for applying a tension to a portion of a chain extending between a first sprocket and a second sprocket, the apparatus comprising:
- a first spring tensioner, said first spring tensioner having,a shoe pivotally mounted at a first end and freely mounted at a second end, said shoe having a spring blade contained therein, said first spring tensioner acting on a portion of a chain extending between a first sprocket and a second sprocket without an intervening sprocket along said portion;
- a second spring tensioner spaced apart from and operable independently of said first spring tensioner, said second spring tensioner having a shoe pivotally mounted at a first end and freely mounted at a second end, said shoe having a spring blade contained therein, said second spring tensioner acting on said portion of said chain.
Dependencies are inferred from the claim text.