ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,558, issued on June 10, was assigned to BISSELL Inc. (Grand Rapids, Mich.).
"Extraction cleaner" was invented by Kenneth M. Lenkiewicz (Grand Rapids, Mich.) and Tom Minh Nguyen (Grand Rapids, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An extraction cleaner includes a recovery tank assembly with a recovery tank that has a removable cover assembly and a separator adapted to provide fluid separation between an inlet of the recovery tank assembly and an exhaust outlet of the recovery tank assembly. The recovery tank assembly also includes a float that is slidably arranged within the recovery tank proximate the cover assembly. A suction inlet i...