Bicycle crank arm shortener

Details Bicycle crank arm shortener Bicycle crank arm shortener

1996-03-12

1998-04-28

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

745947, 745944, B62M 302

Patent

active

057435464

ABSTRACT:
The crank arm of a bicycle is selectively shortened by removing the pedal and attaching one end of the shortener to the pedal opening in the crank arm, with the other end of the shortener being locked to the crank arm by a pair of cams positioned against opposite side edges of the crank arm. Rotation of bolts through the eccentrically mounted cams causes the cams to snugly engage the crank arm side edges to lock the shortener to the crank arm.

REFERENCES:
patent: 2749771 (1956-06-01), Pearl
patent: 5161430 (1992-11-01), Febey
patent: 5566589 (1996-10-01), Buck
One Page Showing Copy of Phil Wood Crank Arm Shortener and Tandems East Crankarm Shortener.

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