Bicycle gear crank

Details Bicycle gear crank Bicycle gear crank

2009-04-21

2011-12-20

Johnson, Vicky (Department: 3656)

Machine element or mechanism

Elements

Cranks and pedals

Reexamination Certificate

active

08079288

ABSTRACT:
A bicycle gear crank that allows easy and proper circumferential position adjustment of the gear plate with respect to the crank arm. The bicycle gear crank includes a crank arm having a base end provided with a boss for mounting to a crank shaft an annular intermediate member non-rotatably around the boss11a; a gear mount3which is supported non-rotatably fixed to the intermediate member, gear plates fixed around the gear mount, and a positional adjuster provided by spline fitting for changing relative circumferential position of the gear mount with respect to the intermediate member.

REFERENCES:
patent: 4441383 (1984-04-01), Segawa
patent: 5515746 (1996-05-01), Yamaguchi
patent: 2007/0295157 (2007-12-01), Schroeder et al.
patent: 2004-090824 (2004-03-01), None
patent: 2004210134 (2004-07-01), None
patent: 2004-338538 (2004-12-01), None
patent: 2006-123895 (2006-05-01), None
patent: 2006-160139 (2006-06-01), None

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