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RESISTANCE REGULATOR FOR A MAGNETIC BRAKE

  • US 20030022765A1
  • Filed: 07/24/2001
  • Published: 01/30/2003
  • Est. Priority Date: 07/24/2001
  • Status: Abandoned Application
First Claim
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1. A resistance regulator for a magnetic brake, said regulator comprising:

  • a base with a fixed post extending upwardly therefrom;

    a rotating shaft unit including a hollow shaft body sleeved rotatably on said post, a reel sleeved fixedly on said shaft body, a pull rope wound around said reel and having one end that is fastened to said reel, and another end that is adapted to be coupled with the brake in such a manner that said pull rope is biased to unwind from said reel, and a side indicator disposed fixedly on said shaft body and located above said reel so as to rotate about said shaft body;

    a regulator body fixed on said base and including a surrounding wall disposed around said rotating shaft unit, a resistance-designating side mark unit disposed on said surrounding wall and having a small-resistance mark and a plurality of equidistant large-resistance marks which represent different resistance resistances that are larger than that of said small-resistance mark of said side mark unit, said small-resistance mark and said large-resistance marks of said side mark unit being arranged circumferentially on said surrounding wall, each adjacent pair of said large-resistance marks of said side mark unit being spaced apart from each other at a distance that is smaller than a distance between said small-resistance mark of said side mark unit and a leading one of said large-resistance marks of said side mark unit, said side indicator being directed toward a selected one of said large-resistance and small-resistance marks of said side mark unit so as to be adapted to indicate a resistance of the brake, and a top wall with a spring-biased ball that is biased to project upwardly and partially therefrom;

    a rotary knob unit including a central piece mounted fixedly on said post of said base and having a top surface, a resistance-designating top mark unit disposed on said top surface of said central piece and having a small-resistance mark and a plurality of equidistant large-resistance marks which represent different resistances that are larger than that of said small-resistance mark of said top mark unit, said small-resistance mark and said large-resistance marks of said top mark unit being arranged circumferentially on said top surface of said central piece and corresponding respectively to said small-resistance mark and said large-resistance marks of said side mark unit, each adjacent pair of said large-resistance marks of said top mark unit being spaced apart from each other at a distance that is smaller than a distance between said small-resistance mark of said top mark unit and a leading one of said large-resistance marks of said top mark unit, a peripheral piece sleeved rotatably on said central piece and connected fixedly to said shaft body of said rotating shaft unit, said peripheral piece having a top surface, and a top indicator fixed on said top surface of said peripheral piece and directed toward a selected one of said small-resistance and large-resistance marks of said top mark unit; and

    a ring plate sleeved fixedly on said shaft body of said rotating shaft unit and having a first positioning unit and a plurality of second positioning units that correspond respectively to said small-resistance and large-resistance marks of said side and top mark units, said peripheral piece of said rotary knob being rotatable relative to said base and said regulator body so as to engage said spring-biased ball of said regulator body with a selected one of said first and second positioning units in said ring plate, thereby aligning said top and side indicators with corresponding ones of said small-resistance and large-resistance marks of said top and side mark units.

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