Stair step exercise machine
First Claim
1. A stair step-type exerciser comprising:
- a stationary frame having horizontally and vertically extending components;
a stair carriage having a plurality of treads mounted thereon and being movable with respect thereto, the stair carriage being movable with respect to the frame at one end and supported with respect to the frame at the other end, wherein an angle of the carriage with respect to the frame is selected;
wherein the treads are mounted on cogged belts trained around sprockets mounted between side plates the cogged belts at one end and engage leveling means at the other end which leveling means keeps the treads horizontal regardless of the angle of the carriage with respect to the frame.
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Abstract
A stair step exerciser is mounted on a frame having horizontal and vertical components. A carriage comprised of a pair of side plates is pivoted to one end of a horizontal component and is retained at the other end in one of a series of vertical stops to selectively determine the angle of the carriage with respect to the frame. The carriage has pulleys at both ends which support the belts on which treads are pivoted at one end. The other end of the treads rest on one rail of a four bar linkage, which linkage expands as the carriage angle is decreased and collapses as the carriage angle is increased so as to always maintain the treads horizontal. A pair of hand cables are provided which move at substantially the same speed as the treads. The hand cables are mounted so as to be closer to the treads as the angle of the carriage increases and so as to move away from the treads as the angle of the carriage decreases.
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Citations
10 Claims
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1. A stair step-type exerciser comprising:
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a stationary frame having horizontally and vertically extending components; a stair carriage having a plurality of treads mounted thereon and being movable with respect thereto, the stair carriage being movable with respect to the frame at one end and supported with respect to the frame at the other end, wherein an angle of the carriage with respect to the frame is selected;
wherein the treads are mounted on cogged belts trained around sprockets mounted between side plates the cogged belts at one end and engage leveling means at the other end which leveling means keeps the treads horizontal regardless of the angle of the carriage with respect to the frame. - View Dependent Claims (2, 3, 4)
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5. A stair step-type exerciser comprising:
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a frame with horizontal and vertical components, one of the vertical components being pivoted thereto and having a plurality of supporting elements at various elevations thereon; a carriage pivoted at one end to the frame and being selectively coupled at the other end to a selected supporting element on the vertical strut, the carriage including a plurality of treads pivotally mounted on a flexible carrier trained around pulleys at opposite ends of the carriage; means disposed on the carriage for maintaining the treads horizontal regardless of the angle of the carriage with respect to the horizontal component of the frame; and means associated with the carriage for providing hand holds for a user;
wherein the means for providing hand holds is a cable which moves at the same speed as the treads. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification