Land vehicles – Wheeled – Occupant propelled type
Patent
1983-05-31
1985-03-05
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Occupant propelled type
280234, 280242R, 280249, 280261, 280263, 280281LP, 474 88, 474 89, B62M 300
Patent
active
045027056
ABSTRACT:
Separate pedal cranks are provided for the front and rear riders of a tandem bicycle having a front wheel of substantially smaller diameter than the rear wheel. Such front wheel is carried by a front fork journaled in a steering head directly below the front seat. The front pedal crank is carried at the end of a support arm extending generally horizontally forward from the steering head so that the front rider pedals in a sitting position with his or her legs extending forward. The front fork is connected to a steering shaft journaled in an upright steering post located behind the front seat. A rear seat substantially higher than the front seat is supported on an upright saddle post spaced rearward from the steering post but sufficiently close thereto for steering control of the bicycle by the rear rider. The bottom end portions of the two upright posts are connected by a long and straight bottom crossbar inclined upward and forward from the bottom end portion of the saddle post and extending beyond the steering post to the steering head. The front and rear pedal cranks are interconnected by two endless chains through an intermediate hub allowing the front rider to freewheel while the rear rider is pedaling and also allowing the speed of rotation of the front pedal crank to be adjusted relative to the speed of rotation of the rear pedal crank.
REFERENCES:
patent: 614320 (1898-11-01), Dennison
patent: 4108460 (1978-08-01), Silva, Jr.
Beach Robert W.
Brown Ward
Hill Mitchell J.
Peters Jr. Joseph F.
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