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US 5,690,598 AGranted
Wrist exerciser
OwnerYung Jen Lianginventor
Life of this patent
Estimating the term…
Abstract
An exerciser includes one handle having an inner thread formed in one end and includes another handle having a bolt extended from one end for engaging with the inner thread of the one handle and for allowing the two handles to be rotated relative to the other. A spring is engaged on the bolt and biased between the handles for applying a biasing force against the handles and for resisting the rotation between the handles. A cap or one or more weights may be attached to the other end of each of the handles for exercising the arms of the user.
Claims3
An exerciser comprising:
- a first handle including a first end having an inner thread formed therein and including a second end,
- a second handle including a first end having a bolt extended therefrom for engaging with said inner thread of said first handle and for allowing said second handle to be rotated relative to said first handle, said second handle including a second end,
- two cones rotatably engaged on said bolt, and
- means biasing between said first handle and said second handle for applying a biasing force against said first handle and said second handle and for resisting the rotation of said second handle relative to said first handle, said biasing means including a spring engaged on said bolt and biased between said first handle and said second handle for applying the biasing force against said first handle and said second handle, said spring including two ends engaged with said cones.
1 more element
Dependencies are inferred from the claim text.