ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,414,667, issued on Sept. 16, was assigned to TENNANT COMPANY (Minneapolis).

"Application of cleaning solution on a surface maintenance machine" was invented by Daniel L. Joynt (Minneapolis).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surface maintenance machine comprises a surface maintenance head assembly with attached surface maintenance tool for collecting debris/fluid using a fluid delivery/recovery system. Embodiments include an outlet nozzle configured to dispense cleaning fluid exiting the outlet nozzle on the surface maintenance tool. The outlet nozzle is fluidly connected to a cleaning fluid source which can vary the intensity of cleaning ...