Patent ID: 9562995
Date: 2017-02-07
CPC Classifications: B23C,B23Q,B29C,G02B,G05B,Y10T

Claim:
1. A polymeric article comprising: an external surface having features formed by a cylindrical tool, wherein the tool has groove segments formed therein, wherein the features in the polymeric article have been imprinted by the cylindrical tool such that the features in the polymeric article correspond to the groove segments of the tool, wherein the groove segments and the corresponding features in the polymeric article are arranged according to an integer brick pattern that defines a repeating pattern of groove segments, wherein the integer is greater than two, wherein each of the groove segments and each of the corresponding features in the polymeric article defines a length and a width, the length being greater than the width and perpendicular to the width, wherein groove segments and the corresponding features in the polymeric article adjacent to one another in a direction parallel to the width are offset in a direction parallel to the length by a fraction of the length, wherein the fraction is 1 divided by the integer, wherein each of the groove segments and each of the corresponding features in the polymeric article has a beginning and an end along its length, wherein the integer brick pattern repeats every integer number of rows such that the beginning and end of each groove segment in a row of groove segments is aligned with the beginning and end of groove segments in other rows of groove segments and the beginning and end of each corresponding feature in a corresponding row of features in the polymeric article is aligned with the beginning and end of features in other rows of features in the polymeric article, the other rows being offset from the row by an integer number of rows, and wherein each of the groove segments and each of the corresponding features in the polymeric article has a radius of curvature between the beginning and the end corresponding to a cutting radius of a fly-cutting head used to form the groove segment.