Two wheel drive bicycle

Details Two wheel drive bicycle Two wheel drive bicycle

1998-05-06

2000-05-30

Schwartz, Christopher P.

Land vehicles

Wheeled

Occupant propelled type

B62M 102

Patent

active

060682795

ABSTRACT:
A two wheel drive bicycle has fixed rear wheel and a turnable front wheel, a chain ring rotatable by way of an external rotation force, and a bicycle frame comprising a top tube and a head tube. A front drive chain runs, in sequence, from the chain ring, about a chain tensioner, around a first pulley of a pulley system, around a freewheel of the front wheel, around a second pulley of the pulley system, and back to the chain ring. The pulley system is fixed adjacent the head tube. The chain tensioner is characterized by a retractable third pulley attached to a spring means, the spring means being biased in a direction away from the front freewheel.

REFERENCES:
patent: 3193305 (1965-07-01), Hendricks
patent: 4479660 (1984-10-01), Pattison
patent: 4773662 (1988-09-01), Phillips
patent: 5116070 (1992-05-01), Becoat
patent: 5158314 (1992-10-01), Pinos
patent: 5224725 (1993-07-01), Erlston
patent: 5253889 (1993-10-01), Kaminski
patent: 5324057 (1994-06-01), Chartrand

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