Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive
Reexamination Certificate
2005-01-04
2005-01-04
Pang, Roger (Department: 3681)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
C475S311000, C475S318000, C475S320000, C475S323000, C475S297000, C475S299000, C192S048920, C074S478000, C074S594100, C074S594200, C074S594300
Reexamination Certificate
active
06837822
ABSTRACT:
An improved structure of a gear cluster for a bicycle having a crankset mounted with a crankshaft provided with a planetary gear module, wherein the planetary gear module includes a big wheel and a small wheel section and the planetary gear module drives an inner gear module mounted onto a gear plate, One lateral side of the crankshaft is provided with a driving structure including a second driving wheel and a third driving wheel engageable with the big and small wheels and the crankshaft is provided with a regulating structure for the positioning of the driving structure. The regulating structure includes two sets of a second and a third ratchet blocks for the positioning or free rotating of the second and the third driving wheels. The regulating structure is provided with a triggering structure to act on different ratchet block.
REFERENCES:
patent: 4644828 (1987-02-01), Kozakae
patent: 5378201 (1995-01-01), Lee et al.
patent: 6007447 (1999-12-01), Lin
patent: 6142904 (2000-11-01), Yoo
patent: 6296072 (2001-10-01), Turner
patent: 05058378 (1993-03-01), None
Le David D.
Lean Norman
Lei Leong C.
Pang Roger
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