Land vehicles – Wheeled – Occupant propelled type
Patent
1995-05-30
1996-12-17
Hurley, Kevin
Land vehicles
Wheeled
Occupant propelled type
B62K 1500
Patent
active
055844944
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.
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patent: 4786070 (1988-11-01), Adee
patent: 4925203 (1990-05-01), Buckler
patent: 5403027 (1995-04-01), Hwang
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