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US 5,312,308 AGranted
Forearm exercise apparatus
OwnerJames H. Hamilton, Barbara J. Buttinventors
Life of this patent
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Abstract
An apparatus including an elongate handle, having a shaft coaxially aligned therewith, including positioning structure such as an "O" ring to maintain a plurality of weighted rings in adjacency to a remote end of the shaft in abutment with a head cap. A modification of the invention includes a plurality of shafts mounted to the head cap, each including further ring structure to provide for adjustable resistance in use of the organization.
Claims2
A forearm exercise apparatus, comprising,
- an elongate handle having a handle first end spaced from a handle second end, with the handle symmetrically oriented about a predetermined axis, with a rigid shaft fixedly mounted to the first end concentrically oriented relative to the axis, the rigid shaft having a rigid shaft externally threaded free end, and
- a head cap, the head cap including an internally threaded socket arranged for mounting upon the free end, and
- at least one weight ring having a central bore receiving the rigid shaft therethrough between the handle first end and the head cap, and
- positioning means oriented between the weight ring and the handle first end to orient the at least one weight ring in adjacency to the head cap, and
- a coil spring member extending between the at least one weight ring and the handle first end, and
- the handle second end includes a pivot sphere and a handle plate, the handle plate having a handle plate socket receiving the pivot sphere therewithin, and a fastener directed into the socket in engagement with the pivot sphere to permit orientation of the handle plate relative to the pivot sphere.
3 more elements
Dependencies are inferred from the claim text.