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TRANSMISSION

  • US 20070287567A1
  • Filed: 06/06/2007
  • Published: 12/13/2007
  • Est. Priority Date: 06/07/2006
  • Status: Abandoned Application
First Claim
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1. A transmission, comprising:

  • an upstream side transmission mechanism that transforms the rotation of an upstream side input member that rotates by receiving input rotation into N steps, and transmits the transformed rotation to an upstream side output member; and

    a compound planet gear transmission mechanism having two or more planet gear trains, that transforms the rotation of the upstream side output member and outputs the transformed rotation to an output shaft of the transmission,wherein of first through fourth rotating elements constituting the compound planet gear transmission mechanism,the first rotating element can be freely engaged with or disengaged from the upstream side input member via first clutch means;

    the second rotating element is connected to the output shaft of the transmission;

    the third rotating element can be freely engaged with or disengaged from the upstream side input member via second clutch means, and can be held fixed by second brake means; and

    the fourth rotating element can be held fixed by first brake means, and is connected to the upstream side output member.

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