Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1994-07-05
1995-07-18
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
482 63, 74 63, A63B 2100, F16H 344
Patent
active
054336805
ABSTRACT:
An elliptical path pedaling system uses two mutually perpendicular intersecting guideways with a circular drive member pivotally attached at its center to a follower, mounted for reciprocal movement within the first guideway. A second follower is pivotally attached to the circular drive member at a predetermined radial distance from the center of said drive member for reciprocal movement in the second guideway. A pedal crank is attached to the drive member to rotate it about the center. As the drive member rotates, the reciprocating movements of the two followers in the perpendicular guideways cause the drive member to move back and forth in the path of the first guideway. A pedal crank attached to the reciprocating drive member follows an elliptical path. A chain or other suitable drive transfer device is coupled between the drive member and a circular driven member, which is rotated about its center and is mounted in a fixed position relative to the guideways. Consequently, the elliptical path of the pedaling system is transferred to a circular driven output for utilization as a bicycle drive or exercise device.
REFERENCES:
patent: 667920 (1901-02-01), Perkins
patent: 3865366 (1975-02-01), Stantial
patent: 3995508 (1976-12-01), Newell
patent: 4181043 (1980-01-01), Waddington
patent: 4753435 (1988-06-01), Carnielli
patent: 4800768 (1989-01-01), Kazuta
patent: 5044627 (1991-09-01), Huang
patent: 5050864 (1991-09-01), Pertramer
patent: 5099706 (1992-03-01), Irvin
Crow Stephen R.
Ptak LaValle D.
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