ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,783, issued on Aug. 5, was assigned to HANGZHOU FUYA SCIENCE AND TECHNOLOGY Co. LTD. (Zhejiang, China).
"Working system" was invented by Ningning Chen (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a working system, including at least one fastened rope node, at least one mobile rope node, and at least one suspended rope node. The three nodes are connected by using a rope, the fastened rope node is fastened to a surface of a building, the suspended rope node includes at least one working apparatus, and the working apparatus works on a side facade of the building. The mobile rope node can move on the bu...