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Cooling structure for internal combustion engine

  • US 4,497,285 A
  • Filed: 09/09/1982
  • Issued: 02/05/1985
  • Est. Priority Date: 09/09/1981
  • Status: Expired due to Fees
First Claim
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1. A cooling structure for an internal combustion engine, comprising a crankcase for housing an engine crankshaft, a substantially closed transmission case integral with said crankcase, and an outside cover defining a cooling chamber between said cover and crankcase, said outside cover and said transmission case being located substantially at both ends of said engine crankshaft, said transmission case incorporating therein power transmission means for an axle, said outside cover incorporating a first air cooling means for introducing atmospheric air from the outside, said cooling chamber and said transmission case communicating with each other through at least one communicating passage, an opening of said communicating passage being positioned inside said outside cover.

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