ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,893, issued on Sept. 23, was assigned to WEIHAI FUNWATER OUTDOOR Co. LTD (Weihai, China).
"Paddle fin structure" was invented by Shengwei Liang (Weihai, China), Zeguang Xiao (Weihai, China) and Xiaoye Xin (Weihai, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a paddle fin structure, which comprises a fin body and a base, wherein the fin body is inserted into and connected with the base through a pin. The pin is adopted to replace the traditional strip wire connection, and the installation and disassembly are convenient. At the same time, the special fin structure is adopted, which can effectively improve the flow dive...