PISTON WITH WELD HARDENED RING GROOVE AND METHOD OF CONSTRUCTION THEREOF

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United States of America Patent

APP PUB NO 20120304956A1
SERIAL NO

13153552

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Abstract

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A piston and method of construction is provided. The piston includes a top part and a bottom part fixed to one another. The bottom part includes a pair of pin bosses providing a pair of laterally spaced pin bores aligned with one another along a pin bore axis. A friction weld joint bonds the top part to the bottom part. The top part and/or the lower part has an annular ring groove configured for receipt of a piston ring, wherein the ring groove has a thermally hardened surface formed by a hardened region of the heat affected zone.

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Patent Owner(s)

Patent OwnerAddress
FEDERAL-MOGUL LLC27300 WEST ELEVEN MILE ROAD SOUTHFIELD MI 48034

International Classification(s)

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  • 2011 Application Filing Year
  • B23P Class
  • 3713 Applications Filed
  • 656 Patents Issued To-Date
  • 17.67 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2011201220132014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsuo, Eduardo H Ann Arbor, US 7 156
Wang, Kai Ann Arbor, US 565 3689

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  • 7 Citation Count
  • B23P Class
  • 12.40 % this patent is cited more than
  • 13 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges6135360113111101 - 1011 - 2021 - 3031 - 4041 - 5061 - 7091 - 100100 +0100200300255075125150175225250275325350375

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