Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Reexamination Certificate
2005-06-28
2005-06-28
Crow, Stephen R. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
C482S057000, C482S062000
Reexamination Certificate
active
06910992
ABSTRACT:
A tandem exerciser is described with two facing seats and two pedal cranks that cause tandem riders to face each other and pedal forwards. A mutually operable handlebar crank with opposing handles mechanically couples to pedals on both sides of the distal pedal crank. A single sprocket wheel concentrically attached to the proximal pedal crank is coupled by a twisted, figure-eight looped chain to one of two sprocket wheels coupled to the distal pedal crank. These opposing sprocket wheels are mounted to their respective pedal cranks so as to have opposite offset angles relative to vertical plane of frame. These offset angles prevent damaging physical contact between sides of chain. The remaining sprocket wheel of distal pedal crank is conventionally chain coupled to freewheel coupled to hub of flywheel. Optionally, a power generator is belt-coupled to outer rim of flywheel, to produce electrical, fluidic or motive power.
REFERENCES:
patent: 1909002 (1933-05-01), Oehlberg
patent: 4233844 (1980-11-01), Dreisinger et al.
patent: 4616823 (1986-10-01), Yang
patent: 4768777 (1988-09-01), Yang
patent: 4919416 (1990-04-01), DeCloux
patent: 5191809 (1993-03-01), Craig
patent: 5247853 (1993-09-01), Dalebout
patent: 5951442 (1999-09-01), Adams et al.
Arguilez Arcadio C.
Crow Stephen R.
Nguyen Tam
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