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US 5,788,610 AGranted
Elliptical exercise machine with arm exercise
OwnerPaul William Eschenbachinventor
Life of this patent
Estimating the term…
Abstract
An exercise apparatus is provided that simulates jogging, running and climbing with elliptical pedal motion and arm exercise. The pedals are guided by extended foot supports that have one pedal pivot following an elongate curve path while the other pedal pivot follows a different curve path. In the preferred embodiment, the elongate curve path is provided by a four-bar linkage coupler point while a rocker link extension provides arm lever exercise. Pedal motion and arm exercise can be adjusted during operation of the exercise apparatus.
Claims34
An exercise machine comprising:
- a framework means, said framework means having an upright support means connected to said framework means;
- a pair of foot support means, each having a first and a second foot support pivot and a foot engaging pedal means;
- a crankshaft bearing housing means connected to said framework means at a predetermined distance relative to said upright support means and having a crank means projecting outwardly therefrom on both sides thereof;
- a linkage means, said linkage means including said crank means, a rocker link means operably associated with said upright support means and, a coupler link means interposed between each said crank means and said rocker link means, said linkage means forming a crank-rocker mechanism to guide said first foot support pivot with a pivot means;
- a foot support guide means, said foot support guide means being operably associated with said linkage means and operably associated with said framework means;
- said first foot support pivot connected pivotally to said linkage means at said pivot means, said second foot support pivot connected pivotally to said foot support guide means to allow said foot support means to move relative to said upright support means when the foot of the user is rotating said crank means whereby said foot engaging pedal means follows an oblong curve path.
3 more elements
An exercise machine comprising:
- a framework means, said framework means having an upright support means connected to said framework means;
- a pair of foot support means, each having a first and a second foot support pivot and a foot engaging pedal means;
- a crankshaft bearing housing means connected to said framework means at a predetermined distance relative to said upright support means and having a crank means projecting outwardly therefrom on both sides thereof;
- a rocker link means, said rocker link means operably associated with said upright support means;
- a triangular shaped coupler link means, said coupler link means having a predetermined pivot pattern including a coupler point pivot, said coupler link means pivotally interposed between each said crank means and said rocker link means, collectively forming a crank-rocker mechanism;
- a foot support guide means, said foot support guide means operably associated with said framework means;
- said first foot support pivot pivotally connected to said coupler point pivot and said second foot support pivot pivotally connected to said foot support guide means to allow said foot support means to move relative to said upright support means when the foot of the user is rotating said crank means whereby said foot engaging pedal means follows an oblong curve path.
4 more elements
An exercise machine comprising:
- a framework means, said framework means having an upright support means connected to said framework means;
- a pair of foot support means, each having a first and a second foot support pivot and a foot engaging pedal means;
- a crankshaft bearing housing means connected to said framework means at a predetermined distance relative to said upright support means and having a crank means projecting outwardly therefrom on both sides thereof;
- a linkage means operably associated with said upright support means, said linkage means containing a plurality of link members having a single said crank means, being sufficient to guide one of said foot support pivots along a bent oblong guide path curve as said crank means is rotated;
- a foot support guide means, said foot support guide means operably associated with said framework means to provide an arcuate guide path curve;
- said first foot support pivot means pivotally connected to said pivot means and said second foot support pivot pivotally connected to said foot support guide means to allow said foot support means to move relative to said upright support means when the foot of the user is rotating said crank means whereby said foot engaging pedal means follows a generally elliptical curve path while said first foot support pivot follows the bent oblong guide path curve and said second foot support pivot follows the arcuate guide path curve.
3 more elements
An exercise machine comprising:
- a framework means, said framework means having an upright support means pivotally connected to said framework means;
- a pair of foot support means, each having a first and a second foot support pivot and a foot engaging pedal means;
- a crankshaft bearing housing means connected to said framework means at a predetermined distance relative to said upright support means and having a crank means projecting outwardly therefrom on both sides thereof;
- a rocker link means, said rocker link means operably associated with said upright support means;
- a triangular shaped coupler link means, said coupler link means having a predetermined pivot pattern including a coupler point pivot, said coupler link means pivotally interposed between each said crank means and said rocker link means;
- a foot support guide means, said foot support guide means operably associated with said framework means;
- said first foot support pivot means pivotally connected to said coupler point pivot and said second foot support pivot pivotally connected to said foot support guide means to allow said foot support means to move relative to said upright support means when the foot of the user is rotating said crank means;
- an arm exercise means operably associated with said upright support means;
- an adjustment means for changing said predetermined distance between said crank bearing housing means and said upright support means whereby said upright support means is movable relative to said framework means by said adjustment means such that the angle of said foot engaging pedal means and the position of said arm exercise means can be changed by said adjustment means during operation of said exercise machine.
6 more elements
Dependencies are inferred from the claim text.