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US 5,643,140 AGranted
Swing exerciser
OwnerChien-lung Tsaiinventor
Life of this patent
Estimating the term…
Abstract
A swing exerciser includes two stands with a shaft rotatable disposed therebetween, each one of the two stands having a swing member with one end thereof pivotally connected to the stand and the other end of the swing member having a plate, each of the two swing members having a link assembly pivotally connected thereto and the other end of each of the link assemblies fixedly and diametrically connected to a respective one of two ends of the shaft such that when a user swings one swing member, the other swing member is rotated in an opposite direction by a rotation of the shaft.
Claims4
A swing exerciser comprising:
- a first stand and a second stand, said first stand having a first upper rod and a first lower rod transversely disposed thereto, said second stand having a second upper rod and a second lower rod disposed transversely thereto;
- a first swing member having one end pivotally connected to said first upper rod and the other end of said first swing member having a first plate disposed thereto, a second swing member having one end pivotally connected to said second upper rod and the other end of said second swing member having a second plate disposed thereto;
- a shaft rotatably connected between said first stand and said second stand;
- a first link assembly comprising a first long link which has one end thereof pivotally connected to said first swing member and a first short link which has one end thereof fixedly connected to said shaft, the other end of each of said first long link and said first short link being pivotally connected with each other, and
- a second link assembly comprising a second long link which has one end thereof pivotally connected to said second swing member and a second short link which has one end thereof fixedly connected to said shaft, the other end of each of said second long link and said second short link being pivotally connected with each other wherein a pivotal point between said first short link and said first long link is located above said shaft and a pivotal point between said second short link and said second long link is located beneath said shaft.
2 more elements
Dependencies are inferred from the claim text.