ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,490, issued on Nov. 25, was assigned to KUDOS MECHANICAL Co. LTD. (New Taipei, Taiwan).
"Automatic oil return structure" was invented by James Chuan (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The automatic oil return structure includes a piston assembly and a main body assembly. The piston assembly comprises an inner tube, an outer tube, and a displacement unit. The main body assembly comprises a first main section fluidly communicating with an oil storage container, a controlling assembly, an operating plug, and a switch channel fluidly communicating with the first main section, a pressurization channel, and an oil returning...