Piston systems having a flow path between piston chambers, pumps including a flow path between piston chambers, and methods of driving pumps

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United States of America Patent

PATENT NO 8262366
APP PUB NO 20100247334A1
SERIAL NO

12414296

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Piston systems comprise a housing including a first piston chamber and a second piston chamber therein. A first piston is movably disposed within the first piston chamber and a second piston is movably disposed within the second piston chamber. A flow path extends between and couples the first piston chamber and the second piston chamber. Reciprocating pumps comprising a flow path between a plurality of piston chambers and methods of driving reciprocating pumps are also disclosed.

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Patent Owner(s)

Patent OwnerAddress
GRACO FLUID HANDLING (A) INC187 EAST 670 KAMAS UT 84036

International Classification(s)

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  • 2009 Application Filing Year
  • F04B Class
  • 723 Applications Filed
  • 466 Patents Issued To-Date
  • 64.46 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20092010201120122013201420152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Simmons, David M Francis, US 29 453
Simmons, John M Marion, US 35 651
Simmons, Tom M Kamas, US 36 573

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Patent Citation Ranking

  • 2 Citation Count
  • F04B Class
  • 4.86 % this patent is cited more than
  • 13 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges233328521541201 - 1011 - 2021 - 3031 - 4041 - 5091 - 100100 +020406080100120140160180200220240260280300320340360

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