Land vehicles – Wheeled – Occupant propelled type
Patent
1988-11-22
1990-05-15
Mitchell, David M.
Land vehicles
Wheeled
Occupant propelled type
280287, 2802881, B62K 1500
Patent
active
049252038
ABSTRACT:
A two wheel semi-recumbent bicycle provided in several embodiments on which the rider sits elevated above the rear wheel on a high-back bucket style seat supported by an angled top tube. The position of the pedal crank assembly is forward and upward of the pedal crank position of conventional bicycles and downward and rearward of that normally associated with fully recumbent bicycles relative to the seat. The rider steers by way of long upwardly curved handlebars affixed to an elongated steering stem originating in a front steering head assembly. The steering stem extends upward and rearward terminating under the area of the rider's upper legs. One version of the semi-recumbent bicycle features a telescoping angled top tube supporting the seat at its upper end to allow both vertical and horizontal adjustment of the rider's position. Other embodiments are provided with removable seat and chain stays replaceable with stay of various lengths to effectively alter both the size and frame geometries of the bicycle. In another variation the seat stays are spring biased shock absorbers and the chain stays are pivotally attached to provide the rider with cushioned ride.
REFERENCES:
patent: 626396 (1899-06-01), Smith
patent: 640680 (1900-01-01), Merrow
patent: 709718 (1902-09-01), Monahan
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patent: 2482472 (1949-09-01), Fried
patent: 4333664 (1982-06-01), Turner et al.
patent: 4592563 (1986-06-01), Dean et al.
patent: 4618169 (1986-10-01), McElfresh
patent: 4659098 (1987-04-01), Jacobson
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