ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,437, issued on Jan. 20, was assigned to H J Fischer LLC (Imperial, Mo.).
"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 fastening member for joining together adjacent duct sections includes a head and a shank extending from the head, the shank having an unthreaded space adjacent to the head and a threaded portion extending from the unthreaded space, the threaded portion threadedly engaging a hole of an inserted corner plate positioned in flange of a first duct section. When the fastening member is fully inserted, the inserted corner plate positioned...