Gymnastics bar and method of making the same
AssigneeAmerican Sports International, Ltd.
InventorMartha Nichols-Ketchum
Life of this patent
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Abstract
A gymnastic bar has a textured non-smooth surface throughout its length to enhance its strength and to facilitate the gripping thereof by gymnasts. The texture of the bar is created by subjecting the bar to a shot peening process wherein the bar is subject to being impacted by a plurality of high velocity, hard particulate material to create indentations in the surface thereof throughout the substantial area of the surface. The bar, of stainless steel material, is heat treated before being subjected to the peening process. The bar is subjected to the process until it achieves a tensile strength of approximately 190,000 p.s.i.
Claims6
An elongated gymnastic bar to be supported in an elevated position for gymnasts to grasp by their hands at times while moving over and around said bar, comprising,
- an elongated solid metal bar having a textured non-smooth surface throughout its length to add to the strength thereof and to facilitate the gripping thereof by the gymnasts wherein the textured non-smooth surface is created by subjecting the bar to a shot peening process wherein the bar is impacted by a plurality of hard particulate material to create indentions in said surface throughout 100 percent of said surface
- the bar being heat treated before texturing,
- the bar having a final tensile strength of at least 190,000 psi.
A method of making an elongated gymnastic bar to be supported in an elevated position for gymnasts to grasp by their hands at times while moving over and around said bar, comprising,
- taking an elongated solid metal bar having an outer cylindrical surface
- creating a textured non-smooth surface on said cylindrical surface of said bar by subjecting the bar to a shot peening process wherein the bar is impacted by a plurality of hard particulate material to create indentions in 100 percent of said surface, heat treating the bar before subjecting the bar to the shot peening process, wherein the bar will have a final tensile strength of at least 190,000 psi.
Dependencies are inferred from the claim text.