HYDRAULIC LASH ADJUSTER EQUIPPED WITH AUXILIARY CHECK VALVE
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United States of America Patent
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N/A
Issued Date -
Jul 9, 2009
app pub date -
Jan 3, 2008
filing date -
Jan 3, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An auxiliary check valve is provided in a hydraulic lash adjuster of the type wherein the plunger-to-body clearance is sealed. The auxiliary check valve is derived so that it remains open until the plunger has been moved to the limit of its travel by rotation of the engine camshaft during engine assembly. The auxiliary check valve permits fluid within the hydraulic lash adjuster high pressure chamber to be displaced to the reservoir chamber allowing the hydraulic lash adjuster to shorten from its free length to the proper installed length.
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