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Title: Gymnastics Bar and Method of Making the Same
Author: Martha Nichols-Ketchum, Jefferson, IA
Source: US Patent 6,475,118 B1
Publication year 2002
Document number: 2002084
Number of pages: 5
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.
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This page last revised: 04/24/2008