The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 1996
Filed:
May. 30, 1995
Paul J Krumm, Lindsborg, KS (US);
Other;
Abstract
A process for building recumbent bicycles to fit their riders. The first step is to build an adjustable recumbent bicycle frame designed for adjustability in the location of all the major elements of the bicycle; including position and angle of seat, position of wheels and pedals or other foot power means, position and caster angle of steering axis and position of handlebars or other steering means. Then individual riders or classes of riders test the adjustable frame model, and work out configurations that fit their body build and style of riding. Finally, lighter weight less adjustable or non-adjustable bicycle frames are built, copying the measurements between the elements of the adjustable frame bicycle, as configured when tested. One unique aspect of the present invention is that the adjustable frame utilized provides for both vertical and longitudinal adjustment between the bicycle seat and the rear wheel. Thus this parameter can be ergonomically optimized. Then the positioning of the front wheel and its steering geometry can be optimized. Finally the position of the foot pedal mechanism and handlebars can be optimized for the rider with respect to the other components.