Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2006-07-24
2009-11-24
Morris, Lesley (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S210000, C280S252000, C280S087100, C280S257000
Reexamination Certificate
active
07621547
ABSTRACT:
A scooter propulsion mechanism includes a pedal secured to the upper surface of the platform and a rigid link pivotally connected from the pedal to the mechanism components mounted on the bottom surface of the platform. Approximately one-half of the propulsion mechanism is located at one side of the rear wheel, and the other one-half is located at the other side of the rear wheel. The mechanism in one embodiment includes a plurality of gear wheels to increase rotational speed, and in another embodiment a plurality of sprocket wheels joined by chain loops, in both cases to drive the rear wheel and propel the scooter. A slot in the platform allows the larger sprocket wheels or gear wheels to project upwardly therethrough, so that there is sufficient ground clearance for safe riding.
REFERENCES:
patent: 833314 (1906-10-01), Fothergill
patent: 1391165 (1921-09-01), Best
patent: 1540170 (1925-06-01), Frick
patent: 1600646 (1926-09-01), Stetson
patent: 1690342 (1928-11-01), Madsen
patent: 1798971 (1931-03-01), Clements
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patent: 6402173 (2002-06-01), Chiu
patent: 6857648 (2005-02-01), Mehmet
patent: 2003/0098566 (2003-05-01), Christensen et al.
Cohen Howard
Morris Lesley
Williams Maurice
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