Free wheel clutch mechanism for bicyclic drive train

  • US 6,641,507 B1
  • Filed: 08/23/1999
  • Issued: 11/04/2003
  • Est. Priority Date: 02/18/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. An exercise bicycle comprising:

  • a frame, including a seat and handlebars;

    a flywheel, the flywheel being rotatably supported on the frame;

    a drive train, including a drive sprocket, a crank arm attached to and extending from the drive sprocket, and a pedal attached to the crank arm, the drive train being rotatably supported by the frame, and a slave sprocket coupled to the flywheel, with the drive and slave sprockets connected in a direct-drive relationship, the drive train driveable in a forward and rearward directions to cause the flywheel to rotate;

    a clutch positioned in engagement with the slave sprocket and the flywheel creating a frictional engagement between the slave sprocket and the flywheel, and creating a break-free force; and

    wherein when said drive train is actuated in the forward direction, the slave sprocket and the flywheel move together, and when the drive train is actuated in the rearward direction and overcomes the break-free force, the clutch mechanism slips between the slave sprocket and the flywheel, allowing the slave sprocket and the flywheel to move independently of one another.

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