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US 2018/0021617 A1Published application
Exercise Methods and Apparatus
OwnerMark A. Krull, Stephen P. Ihliinventors
Life of this patent
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Abstract
An exercise apparatus includes a cable that is pulled from a sheave when the extraction force is sufficient to rotate a drum that is linked to the sheave. A brake material is sandwiched between the drum and at least one tension band to provide adjustable resistance to rotation of the drum. A knob is rotated to adjust tension in the at least one tension band without adversely affecting tension in the brake material. Indicia associated with rotation of the knob show changes in the resistance level as the knob rotates through more than one complete revolution.
Claims15
An exercise apparatus, comprising:
- a frame;
- a shaft rotatably mounted on the frame;
- a sheave mounted to the shaft for rotation in a first direction together with the shaft, and for rotation in an opposite, second direction relative to the shaft;
- a spiral rewind spring having a first end and an opposite, second end, wherein the first end is fastened to the sheave for rotation together with the sheave;
- a connector rotatably mounted on the shaft, wherein the connector is operatively interconnected in series between the frame and the second end of the rewind spring;
- and
- a cord operatively interconnected in series between the sheave and a force receiving member, wherein the sheave rotates with the shaft in the first direction in response to a user exerting force against the force receiving member, and the sheave rotates relative to the shaft in the second direction in response to the rewind spring exerting force against the sheave.
4 more elements
An exercise apparatus, comprising:
- a frame;
- a shaft rotatably mounted on the frame;
- a first rotating member operatively connected to the shaft for rotation with the shaft in a first direction and relative to the shaft in an opposite, second direction;
- a second rotating member rigidly connected to the shaft for rotation with the shaft in each said direction, wherein one said rotating member is a brake device, and the other said rotating member is a sheave;
- a coiled rewind spring having an inner end and an opposite, outer end, wherein the outer end is fastened to the sheave for rotation together with the sheave;
- a spring bushing mounted on the shaft, wherein at least part of the spring bushing is nested inside the rewind spring, and the spring bushing is interconnected in series between the frame and the inner end of the rewind spring, and the spring bushing defines a round perimeter, and the inner end of the rewind spring is disposed inside the perimeter;
- a cord operatively interconnected in series between the sheave and a force receiving member, wherein the sheave rotates with the brake device in the first direction in response to a user exerting force against the force receiving member, and the sheave rotates relative to the brake device in the second direction in response to the rewind spring exerting force against the sheave.
4 more elements
Dependencies are inferred from the claim text.