ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,712, issued on Nov. 18, was assigned to HITACHI CONSTRUCTION MACHINERY Co. LTD. (Tokyo).
"Construction machine" was invented by Masaki Shisawa (Tsuchiura, Japan) and Yuuki Shirato (Tsuchiura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A construction machine 1 includes: a cab 6 that includes a first frame body 15 forming an opening portion 16; a door 17 that includes a second frame body 18 attached to the first frame body 15 via hinges 19; an open state holding locking mechanism 22 that holds the door 17 in an open state; and an open state holding locking release lever 28 that releases the open state holding of the door 17 achieved by the o...