High pressure pump
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United States of America Patent
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Oct 31, 2017
Issued Date -
N/A
app pub date -
Dec 21, 2016
filing date -
May 24, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A valve seat member, which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against an inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.
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