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US 5,638,589 AGranted
Shoelace and method of making the same
OwnerEdwin D. Phillipsinventor
Life of this patent
Estimating the term…
Abstract
A soft, expanded shoelace is extruded from a PTFE paste. Its ends are permanently hardened by laterally compressing the lace, and terminations are installed on the ends.
Claims7
A shoelace comprising a body consisting essentially of a single strand of expanded PTFE formed by extruding PTFE extrusion resin through an orifice, then stretching the strand lengthwise 120% to 1200%, wherein the body terminates at hardened tips formed by laterally compressing ends of the shoelace in a press.
Dependencies are inferred from the claim text.