Friction drive

A friction drive comprising, in combination, a wheel, an annular friction band concentrically mounted on each outer axial side of said wheel adjacent the outer periphery thereof, each of said friction bands having an axially outwardly presented side face inclined axially inwardly from its inner diameter base to its outer diameter edge so that the wheel and bands together form a generally V-shaped radial cross section adjacent the wheel periphery;

• and a chain having a plurality of pivotally interconnected friction links each having a generally inverted V-shaped cross section and being receivable over the wheel perimeter for mating frictional engagement with said friction bands upon rotation of the wheel.

A friction drive comprising, in combination, a wheel having an axially and peripherally extending, radially outwardly presented shoulder on each axial side thereof, said wheel having a radially outwardly projecting annular wheel ring of reduced axial thickness;

• a pair of annular friction bands each having an inside diameter base and an axially inwardly presented side face for seating of said band on the shoulder and ring, respectively, on one side of said wheel, each of said friction bands having an axially outwardly presented side face inclined axially inwardly from its base to its outer peripheral edge;
• means for mounting said friction bands on said wheel so that the bands and wheel ring together form a generally V-shaped radial cross section;
• and a chain having a plurality of pivotally interconnected friction links each having a generally inverted V-shaped transverse cross section and being receivable over the drive-wheel perimeter for mating frictional engagement with said friction bands upon rotation of the wheel.