A stroke adjusting attachment for bicycles or the like enables selective changing of the diameter of the orbit which is traveled by a foot pedal to adapt a particular bicycle to persons having different leg lengths or who may have physical impairments which limit foot movement. The pedal is fastened...http://www.google.ca/patents/US7204788?utm_source=gb-gplus-sharePatent US7204788 - Pedal stroke adjuster for bicycles or the like
