ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,603, issued on April 21, was assigned to SUMITOMO RUBBER INDUSTRIES LTD. (Hyogo, Japan).
"Golf club and weight member therefor" was invented by Akihiko Kobayashi (Kobe, Japan) and Hiroshi Hasegawa (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A golf club comprises a tubular shaft and a weight member. The shaft has a first end having a first inner diameter and a second end on the opposite side thereof. The weight member is attached to the first end, and comprises an insertion portion disposed in the hollow of the shaft, an engaging portion engaged with the first end on the outside of the shaft, protrusions protruding radially from the ...