Land vehicles – Wheeled – Occupant propelled type
Patent
1991-04-15
1992-01-21
Marmor, Charles A.
Land vehicles
Wheeled
Occupant propelled type
280240, 280250, 74142, 745022, 74557, B62M 112
Patent
active
050823027
ABSTRACT:
A dual drive bicycle having a steerable front wheel and a rear wheel that is driven. A foot-powered drive system includes a first rotatable shaft extending transversely to the bicycle. A rotatable drive sprocket is operatively connected to a second shaft rotatably mounted on the steering post in which the front wheel is mounted. A rotatable driven sprocket is mounted on the first shaft and is capable of rotating same for forward drive. A continuous drive chain extends about the drive sprocket and the driven sprocket. A third rotatable shaft is mounted on the steering spindle so as to pivot with the front wheel when the latter is steered. A universal joint connects the second and thrid shafts at a location above the steering shaft. A further continuous chain and cooperating sprockets together with a hand-crank are provided to rotate the third shaft.
REFERENCES:
patent: 582315 (1897-05-01), Quinn
patent: 605559 (1898-06-01), Taylor
patent: 608825 (1898-08-01), Bieber
patent: 632797 (1899-09-01), Van Horn
patent: 641926 (1900-01-01), Bollinger
patent: 2390719 (1945-12-01), Kurth
patent: 3193305 (1965-07-01), Hendricks
patent: 4502705 (1985-03-01), Weaver
patent: 4773662 (1988-09-01), Phillips
patent: 4896559 (1990-01-01), Narier et al.
Johnson Victor E.
Marmor Charles A.
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