Manual treadmill and methods of operating the same

  • US 9,039,580 B1
  • Filed: 03/13/2015
  • Issued: 05/26/2015
  • Est. Priority Date: 03/17/2009
  • Status: Active Grant
First Claim
Patent Images

1. A manually powered treadmill comprising:

  • a frame having a front end and a rear end positioned opposite the front end;

    a front shaft rotatably coupled to the frame at the front end;

    a rear shaft rotatably coupled to the frame at the rear end;

    a first bearing rail having a plurality of bearings, the first bearing rail attached to a left side of the frame;

    a second bearing rail having a plurality of bearings, the second bearing rail attached to a right side of the frame;

    a running belt supported by the first bearing rail and the second bearing rail and disposed about the front shaft and the rear shaft, wherein the running belt follows a curved running surface; and

    a safety device coupled to at least one of the front shaft and the rear shaft, wherein the safety device is structured to substantially prevent rotation of at least one of the front shaft and the rear shaft in a first rotational direction while permitting rotation of the at least one of the front shaft and the rear shaft in a second rotational direction opposite the first rotational direction.

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