ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,473, issued on Feb. 3, was assigned to Evoqua Water Technologies LLC (Pittsburgh).
"Roller for chain and scraper assembly" was invented by Donald Hindman (Menomonee Falls, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A settling basin of a wastewater treatment system, the settling basin comprises a collector chain for driving a plurality of flights through the settling basin, the collector chain including chain links comprising a plurality of side bars including a plurality of inner pairs of side bars and a plurality of outer pairs of side bars, and connecting pins configured to join the plurality of side bars, each connecting pin including a f...