ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,289, issued on March 24, was assigned to YANMAR HOLDINGS Co. LTD. (Osaka, Japan).
"Construction machine" was invented by Kiyoshi Yonekura (Chikugo, Japan) and Kohei Okazaki (Chikugo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This construction machine includes a lower traveling body; an upper swiveling body; and a rotary coupling member that swivels, together with the upper swiveling body, with respect to the lower traveling body. The rotary coupling member has a swivel joint; a rotary joint that includes a slip ring; a cable; a coupling part; and a detent part that is fixed to the body of the swivel joint and that restricts the rotation ...