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Lubricating structure for an internal combustion engine

  • US 8,522,744 B2
  • Filed: 03/17/2010
  • Issued: 09/03/2013
  • Est. Priority Date: 03/31/2009
  • Status: Expired due to Fees
First Claim
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1. An internal combustion engine wherein a transmission case which accommodates a transmission is provided on one side of a crankcase which supports a crankshaft and a crank side oil chamber is provided at a lower portion of said crankcase comprising:

  • a transmission side oil chamber partitioned from a transmission accommodation section is provided at a lower portion of said transmission case such that oil is circulated through said transmission side oil chamber,wherein said crank side oil chamber has a first oil chamber and a second oil chamber separate from each other, anda first opening is in constant flow communication with said transmission side oil chamber provided in said first oil chamber while a second opening is in constant flow communication with said second oil chamber provided in said transmission side oil chamber.

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