US Patent 11535050 Retractive writing utensil

A retractive writing utensil includes a shaft tube, a core stored in the shaft tube in such a manner as to protrude from a front end of the shaft tube when moved forward, and an urging member that is stretched and contracted in the shaft tube in a front-rear direction, wherein the urging member is located adjacent to the core radially outward in such a manner that the center of the urging member is positioned radially outside the core, and urges the core rearward.