US 12,453,449 B2
Self-cleaning system and method for extraction cleaners
Alan J. Krebs, Pierson, MI (US); Kenneth M. Lenkiewicz, Grand Rapids, MI (US); Scott Miller Vogel, Grand Rapids, MI (US); Aaron P. Griffith, Grand Rapids, MI (US); Eric Daniel Buehler, Grand Rapids, MI (US); Jeffrey A. Scholten, Ada, MI (US); and Jake Boles, Kentwood, MI (US)
Assigned to BISSELL Inc., Grand Rapids, MI (US)
Filed by BISSELL Inc., Grand Rapids, MI (US)
Filed on Sep. 6, 2023, as Appl. No. 18/242,756.
Application 18/242,756 is a continuation of application No. 17/880,824, filed on Aug. 4, 2022, granted, now 11,779,176.
Application 17/880,824 is a continuation of application No. 15/994,040, filed on May 31, 2018, granted, now 11,439,283, issued on Sep. 13, 2022.
Claims priority of provisional application 62/514,095, filed on Jun. 2, 2017.
Prior Publication US 2023/0404342 A1, Dec. 21, 2023
Int. Cl. A47L 7/00 (2006.01); A47L 9/00 (2006.01); A47L 11/292 (2006.01); A47L 11/30 (2006.01); A47L 11/40 (2006.01)
CPC A47L 7/0052 (2013.01) [A47L 7/0009 (2013.01); A47L 9/0063 (2013.01); A47L 11/292 (2013.01); A47L 11/302 (2013.01); A47L 11/40 (2013.01); A47L 11/4083 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An extraction cleaner comprising:
a fluid delivery system comprising a supply container;
a recovery system comprising a recovery container, a suction nozzle defining a suction pathway, and a suction source in fluid communication with the suction nozzle and configured to generate a working air stream through the suction pathway;
a brush chamber; and
an agitator within the brush chamber;
wherein the fluid delivery system further comprises:
a fluid distributor in fluid communication with the supply container, the fluid distributor configured to deposit a cleaning fluid onto the agitator and/or onto a surface to be cleaned; and
a nozzle flushing manifold in fluid communication with the supply container and comprising a plurality of distributor outlets configured to spray cleaning fluid into the suction pathway.