US Patent Issued to Sunny Distributor on Dec. 9 for "Resistance pulley structure, rowing machine, and rowing high-position pull-down integrated machine" (California Inventor)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,399, issued on Dec. 9, was assigned to Sunny Distributor Inc. (City of Industry, Calif.).

"Resistance pulley structure, rowing machine, and rowing high-position pull-down integrated machine" was invented by Yu Sun (City of Industry, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A resistance pulley structure includes a symmetrical stay cord assembly, a transmission assembly, a resistance assembly and driving parts. The stay cord assembly includes a stay cord, a first and a second fixed pulley block and a movable pulley block. The movable pulley block includes a left and right movable pulleys, and the second fixed pulley block includes a second...