ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,668, issued on April 7, was assigned to Dai Ono (Chiba, Japan).
"Hanging scaffold" was invented by Dai Ono (Tokyo) and Tatsuo Kurisu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is characterized in that a scaffolding member having a work floor; a chain formed by connecting a plurality of annular-shaped chain elements in a row and suspending the scaffolding member; and a chain coupling device installed in the scaffolding member and coupling the chain to the scaffolding member are included, in which when a side facing a hole of the chain element is a front side, a width of the chain element viewed from the front side is a lateral width, an...