HYDRAULIC TENSIONER
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
May 21, 2013
filing date -
Jun 4, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a hydraulic tensioner for maintaining tension in a traveling transmission medium in an engine, oil is delivered to an expansible chamber formed by a tensioner housing and a plunger through a reserve chamber composed of an entrance reserve chamber into which oil flows from an oil supply and a supply reserve chamber from which oil flows to the expansible chamber. A partition between the entrance and supply reserve chambers establishes a communication passage that ensures an amount of oil in the supply reserve chamber sufficient to make up the loss of oil due to leakage from the expansible chamber during a long interval while engine is inoperative, and additional leakage from the expansible chamber due to reciprocating movement of the plunger when the engine is started.
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