Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2006-08-29
2006-08-29
Morris, Lesley D. (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S283000
Reexamination Certificate
active
07097190
ABSTRACT:
A bicycle is provided with a body frame, a swing arm structure, a rear wheel, and a transmission. The transmission includes a drive rotation body to be rotation-driven by a crankshaft, and a plurality of gear-change rotation bodies. The transmission is provided with an output axis supported to be rotatable to a support member fixed to the bicycle body frame, and drive-coupled to the plurality of gear-change rotation bodies, and a gear-change pulley for drive-coupling the drive rotation body and the operation rotation body alternatively selected from the plurality of gear-change rotation bodies by being placed thereacross by a gear shifting mechanism. The output axis is drive-coupled to the rear wheel via an output pulley, thereby preventing the gear-change pulley from sagging even if the swing arm swings.
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patent: 2002-227756 (2002-08-01), None
Matsumoto Shinya
Morita Kenji
Hamre Schumann Mueller & Larson P.C.
Lum Lee
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