ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,475, issued on Jan. 13, was assigned to Hitachi Ltd. (Tokyo).
"Construction elevator device" was invented by Yuto Hino (Tokyo), Akitomo Igarashi (Tokyo) and Takayuki Hagiwara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention includes machine room unit hoisters 9a, 9b, 9c by which a machine room unit 6 is suspended from a support member provided in a hoistway so as to be movable in an ascending/descending direction. The machine room unit hoisters 9a, 9b, 9c suspend the machine room unit 6 at suspension points 21a, 21b, 21c. The machine room unit hoisters 9a, 9b, 9c are provided, supported by the support member. When viewed f...