US Patent Issued to DONGGUAN DIRECT DRIVE TECHNOLOGY on Jan. 13 for "Fitness device using two motors for offsetting shakes" (Chinese Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,589, issued on Jan. 13, was assigned to DONGGUAN DIRECT DRIVE TECHNOLOGY Ltd. (Dongguan, China).

"Fitness device using two motors for offsetting shakes" was invented by Yulong Fan (Dongguan, China), Yanan Yu (Dongguan, China), Ying Liu (Dongguan, China) and Zhiming Zhong (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fitness device includes two support frames mounted in a box, two driving motors mounted on the two support frames, a pull rope reel connected to the driving motors, a fitness pull rope wound around the pull rope reel and extending out of the box, and a control system for controlling the driving motors. The control sys...