Patent 11752395 was granted and assigned to Molten Corporation on September, 2023 by the United States Patent and Trademark Office.
According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.