Not applicable.
Not applicable.
Not applicable.
The present invention relates generally to a structure of a fitness ball, and more particularly to an annular fitness ball with an annular design.
The conventional fitness ball is in an annular shape, and it usually has protruding beads spread on the surface, which offers a massage effect on human body. However, this conventional fitness ball is annular, which rolls easily. Therefore, it is not stable when a human body is leaning against it. Once the human body is out of balance, it would fall out of the fitness ball. This has a negative impact for the beginner or a user with poor balance. Also, for some users, this fitness ball is not a proper fitness tool. Therefore, the industry has developed other non-annular fitness balls, such as semi-annular or semi-columnar fitness ball, which do not have the rolling function because of the removal of the annular design. Though the stability and safety are improved when in use, it has a rocking effect only, which decreases the practicability.
Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve the efficacy.
To this end, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products.
The improved fact of the present invention includes the annular fitness ball 10 of the present invention which uses an annular body 11 to form an annular air-filled space 12 inside, and an annular surface 13 and a central hole 14 on the outside. The cross-sectional diameter of the annular air-filled space 12 is larger than the cross-sectional diameter of the central hole 14, so that the annular fitness ball 10 of the present invention can lean stably and safely. However, its other side still has the circular outside and is easy to roll. The entire structure can be shown in
Moreover, the present invention has added through hole 16, and protruding ear 15 on the side of the annular surface. The through hole 16 of the protruding ear 15 can be threaded by a pull string 20, and the pull string 20 mentioned here has a grip 21, so that the pulling function may be added to the annular fitness ball 10.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
As shown in
The annular fitness ball 10 comprises an annular body 11, which can be made of sealed plastic material, and an annular air-filled space 12 placed inside the annular body 11. The pre-determined air-filled space 12 has a spout (not shown in the figure) as an air inlet and air outlet. An annular surface 13 and a central hole 14 is designed on the external side of the annular body 11. The cross-sectional diameter L1 of the annular air-filled space 12 must be larger than the cross-sectional diameter L2 of the central hole 14. By so doing, it makes the annular fitness ball 10 of the present invention have bigger and more securer bottom space than the conventional annular fitness ball; therefore, it is more stable and safer.
Among them, as shown in
As shown in
Through the above structure and design, the operation of the annular fitness ball 10 disclosed by the present invention is explained as follows:
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Number | Date | Country | |
---|---|---|---|
20070259761 A1 | Nov 2007 | US |