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Rectilinear pedal movement drive system

  • US 5,156,412 A
  • Filed: 02/08/1991
  • Issued: 10/20/1992
  • Est. Priority Date: 02/08/1991
  • Status: Expired due to Fees
First Claim
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1. A bicycle drive apparatus for converting a rectilinear driving force imparted to the bicycle pedals to a rotary force delivered to a bicycle wheel, said rectilinear driving force being generated by the feet of a rider positioned on the pedals of the bicycle, said apparatus comprising:

  • first and second vertically mounted, parallel rectilinear motion guides disposed between said pedals;

    first and second force blocks slidably mounted on said motion guides;

    a flexible cable;

    a means for reversing direction of said flexible cable trained about said means, said flexible cable connecting said first and second force blocks;

    and idler axle mounted adjacent one end of said motion guides, having first and second idler sprockets mounted on opposite ends of said idler axle, one of said idler sprockets linked to said first force block, the other of said idler sprockets linked to said second force block;

    a drive axle mounted adjacent the other end of said parallel rectilinear motion guides and extending thereacross, said drive axle being aligned parallel to said idler axle and having a drive wheel mounted on said drive axle for rotation therewith;

    first and second power sprockets mechanically interconnected with said drive axle inwardly of said drive wheel;

    means for unidirectionally clutching said power sprockets; and

    first and second power transference chains linking said first and second power sprockets to said first and second force blocks, respectively.

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