Reciprocating-piston pump with plain bearing traversed by flow

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United States of America Patent

PATENT NO 9394890
APP PUB NO 20130280103A1
SERIAL NO

13851282

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Abstract

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A reciprocating-piston pump with plain bearing traversed by flow. The reciprocating-piston pump is driven by an electromagnet to have a bearing of the piston in a cylinder, which bearing is protected against local overheating and from which bearing decomposition and reaction products and any wear products generated are discharged. For this purpose, elongate helical depressions are provided in one of two bearing surfaces in a bearing gap between the piston and the cylinder, which depressions are traversed entirely or partially by a flow of the liquid which is delivered by the piston acting in interaction with other components of the reciprocating-piston pump for the delivery rate of the reciprocating-piston pump. Reciprocating-piston pumps of the described type can be used as dosing pumps and as delivery pumps in fuel-operated standstill heaters, auxiliary heaters and exhaust-gas purification systems in vehicles.

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Patent Owner(s)

Patent OwnerAddress
THOMAS MAGNETE GMBH57562 HERDORF

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  • 2013 Application Filing Year
  • F04B Class
  • 872 Applications Filed
  • 785 Patents Issued To-Date
  • 90.03 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20132014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feckler, Michael Herdorf, DE 4 11
Heck, Mike Derschen, DE 5 3
Muller, Axel Siegen, DE 17 95
Ohligschlager, Olaf Grunebach, DE 5 7
Reinschmidt, Tebea Neunkirchen, DE 1 0
Wellnitz, Robert Kirchen, DE 3 1

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1655614814401 - 1011 - 2021 - 3031 - 400255075100125150175200225250275300325350375400425450475500525550575600

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