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REDUCED COMPRESSION HEIGHT PISTON AND PISTON ASSEMBLY THEREWITH AND METHODS OF CONSTRUCTION THEREOF

  • US 20140083390A1
  • Filed: 09/27/2013
  • Published: 03/27/2014
  • Est. Priority Date: 09/27/2012
  • Status: Active Grant
First Claim
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1. A piston assembly for an internal combustion engine, comprising:

  • a piston head having an upper combustion wall with an undercrown surface and a ring belt region depending from said upper combustion wall, a floor having an upper surface and a bottom surface, said floor being spaced beneath said upper combustion wall in radial alignment with said ring belt region, a substantially enclosed, annular cooling gallery bounded by said undercrown surface and said floor, said cooling gallery extending radially inwardly from said ring belt region;

    a pair of pin bores depending directly from the floor of the cooling gallery;

    a pin having ends configured for oscillating receipt in the pin bores;

    a pin bearing surface extending within said pin bores and between said pin bores in said lower surface of said floor; and

    a connecting rod having an end fixed to the pin for conjoint oscillation therewith.

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