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Stepper with sensor system

  • US 5,454,770 A
  • Filed: 11/15/1993
  • Issued: 10/03/1995
  • Est. Priority Date: 11/15/1993
  • Status: Expired due to Fees
First Claim
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1. A stepper with a sensor system to monitor exercise performance and generate exercise information, comprising:

  • a frame assembly which includes a base frame and a center beam mounted securely on said base frame;

    two foot-pedal arms respectively on opposite sides of said center beam, each of said foot-pedal arms having an end mounted pivotally on said frame assembly for pivoting about an axis transverse to said center beam;

    a photo-detecting unit mounted operatively on said frame assembly, said photo-detecting unit including a first photo emitter and a first photo receiver opposite to and aligned with said first photo emitter;

    a slotted wheel mounted on said pivot axis of said end of one of said foot-pedal arms with a flange member extending toward said center beam and between said first photo emitter and said first photo receiver, said flange member having a plurality of angularly spaced-apart openings, said slotted wheel swinging with said one of said foot-pedal arms to permit said first photo receiver to receive light intermittently through said openings from said first photo emitter and produce electrical signals corresponding thereto; and

    an instrument control unit connected electrically to said photo-detecting unit so as to process said signals from said photo-detecting unit and generate exercise information based on said signals.

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