Bicycle drive unit of multi pedaling type

Details Bicycle drive unit of multi pedaling type Bicycle drive unit of multi pedaling type

2008-05-13

2008-05-13

Winner, Tony (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S259000, C280S253000, C280S257000, C280S255000, C475S297000, C475S289000, C475S296000, C475S312000

Reexamination Certificate

active

07370873

ABSTRACT:
The present invention relates to a bicycle drive unit of multiple pedaling modes, comprising a drive shaft on one side having a counterclockwise one-way clutch and a clockwise one-way clutch coupled thereto by means of sunk keys and the drive shaft is engaged with a ring gear having an outer circumference attached to a chain sprocket; a plurality of hollow turnabout gears engaged with the central gear of the drive shaft; a drive shaft on the other side having one side rotatably inserted into an inner bearing housing that is integrally formed with the rotary plate and the other side coupled to the inner wheels of the clockwise one-way clutch and the counterclockwise one-way clutch by means of the sunk keys and a plurality of turnabout gears, a two-way turnabout gear and a hollow turnabout gear.

REFERENCES:
patent: 4036068 (1977-07-01), Gilbert
patent: 4571219 (1986-02-01), Breden et al.
patent: 5242028 (1993-09-01), Murphy et al.
patent: 5800302 (1998-09-01), Werre
patent: 6007441 (1999-12-01), Tysver
patent: 6048287 (2000-04-01), Rohloff
patent: 6390487 (2002-05-01), Yoo
patent: 6419252 (2002-07-01), Park et al.
patent: 6852060 (2005-02-01), Ash
patent: 2005/0173889 (2005-08-01), Matsumoto et al.
patent: 2005/0217914 (2005-10-01), Sugimoto

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