Adjustable crank for bicycles

Details Adjustable crank for bicycles Adjustable crank for bicycles

2005-05-24

2005-05-24

Morris, Lesley D. (Department: 3611)

Machine element or mechanism

Elements

Cranks and pedals

C280S259000

Reexamination Certificate

active

06895834

ABSTRACT:
A crank arm of a bicycle having an effective crank arm length that can be selectively adjusted for increasing the comfort and performance of the rider. The crank arm includes a crank arm member rotatably connected about a crank arm member rotational axis to a base member. The base member includes a spindle bore defining a spindle rotational axis, which is eccentric with respect to the crank arm member rotational axis. The opposite end of the crank arm member includes a pedal bore defining a pedal rotational axis. The crank arm further includes a fastener to selectively couple the base member to the crank arm member for rotation therewith.

REFERENCES:
patent: 5161430 (1992-11-01), Febey
patent: 5458022 (1995-10-01), Mattfeld et al.
patent: 5566590 (1996-10-01), Wan
patent: 5653150 (1997-08-01), Gignoux
patent: 5879017 (1999-03-01), Debruin
patent: 6474193 (2002-11-01), Farney
patent: 6589139 (2003-07-01), Butterworth
patent: 6640662 (2003-11-01), Baxter

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