Patent ID: 6260383
Filing Date: 2001-07-17
Classification: A44C

Abstract:
A integral ring which is comprised of at least 35 weight percent of a precious metal selected from the group consisting of silver and gold, wherein said ring has a porosity of less than 0.1 percent, a Vickers pyramidal hardness of at least about 120, and a tensile strength at least about 60,000 pounds per square inch, and wherein:(a) said ring has an inner surface, and outer surface, an inner diameter of from about 0.55 to about 0.93 inches, and outer diameter of from about 0.61 to about 1.09 inches, and a thickness of from about 0.03 to about 0.08 inches;(b) said ring has a circumference of from about 1.7 to about 3.5 inches,(c) disposed about and extending around the entire outer surface of said ring is a first annular groove and a second, spaced apart annular groove, and at least 10 adjoining recessed areas disposed between and communicating with said first annular groove and said second annular groove, wherein each of said first annular groove and said second annular groove has a width of from about 0.01 to about 0.02 inches and a depth of from about 0.008 to about 0.018 inches, and each of said recessed areas has a depth of from about 0.02 to about 0.03 inches, and(d) disposed between said adjoining recessed areas are at least about 10 raised inidicia extending upwardly from said recessed area.