ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,875, issued on May 6.
"Commercial roofing screw machine" was invented by Kurtis D. Scepaniak (Cold Spring, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A commercial roofing screw machine has: a plurality of screw guns that each properly place and install screw and washer pairs, both securely and in the right location, from separate magazines; automated operation with automatic or manual fastening pattern selection; sensors to recognize insulation sheets or marking lines, the high and low rib on the decking through the insulation, and torque; an indicia generator that marks fastener locations that did not hold correctly; and wireless communic...