Exercise devices – Involving user translation or physical simulation thereof
Patent
1999-02-08
2000-02-15
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
482 52, 482 57, A63B 2204, A63B 6916
Patent
active
060246766
ABSTRACT:
The present invention relates to a standup exercise apparatus that simulates walking, jogging and climbing with arm exercise. More particularly, the present invention relates to an exercise machine having separately supported pedals for the feet and arm exercise coordinated with the motion of the feet.
Cross trainers guide the feet along a generally elliptical shaped curve to simulate the motions of jogging and climbing. Existing machines often produce user problems such as heel slap, numb toe and knee soreness with extended use. The present invention is an improved elliptical exercise machine capable of extended exercise with fewer user problems. The pedal stride length is determined by a horizontal control linkage while the pedal lift is determined by a vertical control linkage. Further, the cross trainer is adjustable to vary the motion of the elliptical stride length and height separately to accommodate users of different size and muscle development.
The design is compact to minimize floor space. Pedal motion has equivalent maximum horizontal forward and rearward velocities to minimize pedal accelerations that cause undue muscle and joint soreness. Handles are coupled to the rocker linkage for arm exercise.
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patent: 5685804 (1997-11-01), Whan-Tong et al.
patent: 5743834 (1998-04-01), Rodgers
patent: 5800315 (1998-09-01), Yu et al.
patent: 5865712 (1999-02-01), Chang
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