Vehicle convertible from a tricycle two wheel drive to a four wh

Details Vehicle convertible from a tricycle two wheel drive to a four wh Vehicle convertible from a tricycle two wheel drive to a four wh

1981-05-01

1983-07-12

Mitchell, David M.

Motor vehicles

Special wheel base

With means for changing number of supporting wheels, or for...

180 2402, 180202, 280 4312, B62D 61012

Patent

active

043925413

ABSTRACT:
A tricycle type vehicle with two forwardly disposed spaced apart drive wheels and a rear centrally disposed caster wheel. Spaced apart auxiliary drive wheels flank both sides of the rear caster wheel and are arranged for vertical movement on the vehicle. The auxiliary drive wheels may be in an up inoperative position to permit the vehicle to act solely as a tricycle with two driving wheels, or down in ground engaging operative position causing the caster wheel to be raised off the ground and thus converting the vehicle to a four wheel drive vehicle.

REFERENCES:
patent: 1340024 (1920-05-01), Davis et al.
patent: 1742636 (1930-01-01), Collins
patent: 2078900 (1937-04-01), Biles
patent: 2829906 (1958-04-01), Hull
patent: 2864625 (1958-12-01), Clements
patent: 3074500 (1963-01-01), Ulinski
patent: 3191963 (1965-06-01), Prichard
patent: 3208764 (1965-09-01), Holland
patent: 3502165 (1970-03-01), Matsukata
patent: 3703216 (1972-11-01), Thibodeau
patent: 3826322 (1974-07-01), Williams
patent: 3826393 (1974-07-01), Carroll
patent: 3850472 (1974-11-01), Greppi
patent: 3908849 (1975-09-01), Carroll
patent: 4063611 (1977-12-01), Anderson

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