ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,551, issued on Feb. 17.
"System and method for joining and hanging ducts" was invented by Herbert J. Fischer (Imperial, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A corner flange connection member configured for joining together adjacent duct channel flanges associated with duct sections includes two leg portions joined together in angular relationship by a corner portion, and at least one opening in said corner portion for receiving at least one fastening member for connecting said corner flange connection member to the duct sections. The at least one opening is shaped so as to threadably receive the fastening member without cutting threads...