ALEXANDRIA, Va., Feb. 17 -- United States Patent no. RE50,797, issued on Feb. 17, was assigned to Old Dominion Brush Co. (Henrico, Va.).
"Cable broom" was invented by Britt R. Calloway (Midlothian, Va.), Robert Mayes (Hanover, Va.), Tim Stumph (Midlothian, Va.) and Chris Turner (Aylett, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gutter broom is provided. The gutter broom can include one or more block segments, each block segment having openings in which bristles are positioned. The bristles can have a first stiffness or a second stiffness different than the first stiffness. Bristles having the second stiffness can be positioned radially outward of bristles having the first stiffness on a block segm...