ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,940, issued on Sept. 15, was assigned to Rytec Corp. (Jackson, Wis.).
"Door assembly having a soft bottomed door panel and system and method of driving the same" was invented by Brian Norbert Drifka (Richfield, Wis.) and Gabriel John Biertzer (West Bend, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drive system for an overhead roll-up door assembly having a motor, a drive drum coupled to the motor, a first drive gear coupled to the drive drum, a second drive gear coupled to the drive drum, a first column of drive teeth fixed to a first side of a door panel and engaging the first drive gear, and a second column of drive teeth fixed to a sec...