Lash adjuster
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United States of America Patent
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Nov 15, 2011
Grant Date -
Mar 20, 2008
app pub date -
Sep 6, 2007
filing date -
Sep 6, 2007
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A return spring is formed using a compression coil spring that is installed so that its axial direction is an up-down direction. The return spring is provided in a high-pressure chamber, and powers a plunger in an upwards direction. A coil diameter of the return spring varies along the axial direction. When the return spring is in a maximally compressed state, an axial direction dimension (up-down direction dimension) is smaller than a dimension that is a thickness of a spring wire multiplied by the number of coil turns. Hence, an overall height of a lash adjuster A can be reduced in comparison to when a return spring with a constant coil diameter over an entire length is used.
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