US Patent Issued on Oct. 14 for "Automated building washing apparatus" (Minnesota Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,206, issued on Oct. 14.

"Automated building washing apparatus" was invented by Michael R. Lange (Little Canada, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An automated building washing device generally includes a spray bar assembly coupled to a window washing swing stage. The spray bar assembly is horizontally movable from end-to-end along the longitudinal direction of a window washing swing stage while spray heads rotate so that a relatively large portion of building surface can be quickly cleaned. The spray bar assembly includes a hollow rotating bar and spray heads inside of a shroud so that the bar can rotate as water or cleaning solut...