Land vehicles – Wheeled – Occupant propelled type
Patent
1990-10-18
1992-10-27
Hill, Mitchell J.
Land vehicles
Wheeled
Occupant propelled type
74417, 280260, 280261, B62M 102
Patent
active
051583143
ABSTRACT:
A traction system for driving the front and rear wheels of a bicycle of the type including a gearshift connected to the rear wheel. The gearshift is coupled to a main drive chain which is driven by the pedals of the bicycle. A first auxiliary traction chain is coupled to the rear wheel such as to be driven by the rearwheel. A second auxiliary traction chain is coupled to the front wheel of the bicycle for driving the same. A flexible transmission formed of rigid and flexible shafts interconnected by cardan joints connects the first and second auxiliary traction chains so that motion of the rear wheel is coupled to the front wheel and both wheels are simultaneously driven.
REFERENCES:
patent: 599048 (1898-02-01), Turner
patent: 4773662 (1988-09-01), Phillips
patent: 5004258 (1991-04-01), Becoat
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