Patent ID: 7587915

Claim:
A sock comprising: a sole comprising a plurality of courses extending in a course direction, each of said courses comprising a loop-forming yarn having a plurality of loops, a rubber yarn and a reinforcing yarn, an inner surface, and protrusions and recesses on said inner surface, said protrusions being formed so as to be spaced from each other in the course direction, thereby defining said recesses between adjacent protrusions, each of said protrusions being formed by tuck knitting, wherein said plurality of courses includes a first course and a second course, said first course including a first loop-forming yarn having a first plurality of loops including a plurality of first loops and a second loop, a first rubber yarn and a first reinforcing yarn, said second course including a second loop-forming yarn having a second plurality of loops including a plurality of first loops and a second loop, a second rubber yarn and a second reinforcing yarn, said plurality of first loops from said first plurality of loops being pulled toward said second loop-forming yarn and knitted to form said second loop of said second plurality of loops, and wherein together with said first rubber yarn and said first reinforcing yarn, said first loops from said first plurality of loops are substantially aligned with each other and with said second loop of said second plurality of loops in a wale direction perpendicular to the course direction.