Load ring mounting of pumping plunger sleeve
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United States of America Patent
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Nov 12, 2013
Grant Date -
Sep 4, 2008
app pub date -
Jan 9, 2008
filing date -
Jan 10, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A clamping and seal loading technique for securing the plunger sleeve to the pump housing of a single plunger fuel pump. This is achieved by providing a load ring between a sleeve retainer and the sleeve, such that the axial force applied by the retainer during installation and attachment to the plunger bore wall of the housing, is distributed more evenly on the sleeve and the sealing surface of the sleeve against the housing adjacent to the pumping chamber. The even distribution of force minimizes misalignment of the sleeve and thus maintains concentricity between the sleeve and the plunger.
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