Wind-drag type climber

Details Wind-drag type climber Wind-drag type climber

1990-01-22

1990-06-19

Crow, Stephen R.

Undertaking

272130, 272 96, A63B 2304

Patent

active

049346881

ABSTRACT:
A wind-drag type climber includes a base frame, a suspended wheel, a handlebar assembly, two swing arms each carrying a pedal thereon, a driving shaft, and a speed-increasing mechanism interconnecting the wheel and the driving shaft so as to rotate the wheel at a speed greater than that of the driving shaft. The wheel has a plurality of generally radially extending wheel blades which create air impedance to the rotation of the wheel. A drawing member is fastened to the free ends of the swing arms at two ends thereof and has two chain-like sections engaged with the two sprockets of the driving shaft, and a cable-like section extending around two aligned lower pulleys. The sprockets are sleeved rotatably on the driving shaft by unidirectional bearings. Each of the bearings locks the corresponding sprocket on the driving shaft only when the corresponding sprocket rotates in a predetermined direction. A flexible reciprocating element extends around an upper pulley and is fastened to the free ends of the swing arms at two ends thereof.

REFERENCES:
patent: 3704886 (1972-12-01), Kay et al.
patent: 4708338 (1987-11-01), Potts
patent: 4720093 (1988-01-01), Del Mar
patent: 4838543 (1989-06-01), Armstrong et al.

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