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Pistons for internal combustion engines

  • US 4,140,096 A
  • Filed: 03/30/1977
  • Issued: 02/20/1979
  • Est. Priority Date: 03/31/1976
  • Status: Expired due to Term
First Claim
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1. A piston for an internal combustion engine comprising a piston body of a first metal, a crown in said piston body, a combustion chamber in said crown, a lip portion overhanging said combustion chamber, said lip portion being constituted by an annular insert of a second metal more resistant to operating conditions in said chamber than said first metal, limbs of a third metal secured at one end to the annular insert comprising at least one member embedded in said body and extending from said insert into a portion of said body having a temperature of about 150 degrees centigrade at maximum operating temperature of said piston.

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