Hydraulic tensioner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 13, 2007
Grant Date -
May 4, 2006
app pub date -
Oct 11, 2005
filing date -
Nov 2, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a hydraulic tensioner, a deairing valve unit comprising a synthetic resin ball guide, a check ball a biasing spring, a ball seat, and a retaining disc, is press-fit into a hollow plunger, and disposed adjacent the protruding end of the plunger. The ball and seat of the deairing valve unit are arranged to block flow of oil out of the tensioner when the oil is under pressure, but open to allow air to flow out of the tensioner, through a vent in the protruding end of the plunger, after a negative pressure condition occurs inside the oil chamber of the tensioner.
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