Drive system for a positive displacement pump

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United States of America Patent

PATENT NO 11867165
APP PUB NO 20210310475A1
SERIAL NO

17348309

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Abstract

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A drive system for a pump includes a housing, first and second fluid displacement members, and a reciprocating member configured to mechanically displace the first and second fluid displacement members through respective suction strokes. The housing and fluid displacement members define an internal pressure chamber configured to be filled with a working fluid having a charge pressure. The internal pressure chamber is configured such that the working fluid simultaneously exerts the charge pressure on the first and second fluid displacement members.

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Patent Owner(s)

Patent OwnerAddress
GRACO MINNESOTA INC88 11TH AVENUE NE MINNEAPOLIS MN 55413-1829

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Collins, Adam K Brooklyn Park, US 16 119
Earles, Jeffrey A Lakeville, US 22 242
Hines, Bradley H Andover, US 66 732
Koehn, Brian W Minneapolis, US 31 202
Scheierl, Paul W Circle Pines, US 24 179

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