ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,683, issued on Sept. 2, was assigned to ZURN WATER LLC (Milwaukee).
"Elevator trench drain" was invented by David M. Gomo (Lake City, Pa.), Robert A. DiPlacido (Erie, Pa.), Jaroslaw J. Plachotnik (Jamestown, N.Y.) and Jason E. Morris (Erie, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trench drain includes a trench, a grating seat and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange. The grating seat is configured to receive the grating. The peripheral side walls of the trench have a pair of opposing elongated slots form...