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US 6,387,018 B1Granted
Methods and apparatus for adjusting resistance to exercise
OwnerMark A. Krullinventor
Life of this patent
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Abstract
Supplemental weights are selectively movable into and out of a path traversed by the top plate in a weight stack. Preferably, the supplemental weights include a half-weight and a quarter-weight which are movable in any combination into the path of the top plate and into concentric alignment with the top plate.
Claims14
An exercise apparatus, comprising:
- a frame;
- a stack of weights movably mounted on the frame, wherein the stack includes a top plate which is movable along a path;
- and
- a supplemental weight mounted for operative movement along a frame member and selectively movable between a rest position, wherein the weight is supported in a vertical orientation outside the path of the top plate, and an operative position, wherein the weight is supported in a horizontal orientation within the path of the top plate.
1 more element
An exercise apparatus, comprising:
- a frame;
- a stack of weights movably mounted on the frame, wherein the stack includes a top plate which is movable along a path;
- first and second supplemental weights mounted for operative movement along the frame and movable in any order between respective rest positions, outside the path of the top plate, and respective operative positions, within the path of the top plate and concentrically aligned with the top plate.
Dependencies are inferred from the claim text.