Patent ID: 9532693
Date: 2017-01-03
CPC Classifications: A47L

Claim:
1. An unattended extraction cleaning machine comprising: a housing with a bottom portion that is adapted to rest on a surface to be cleaned and that defines an opening in an underside of the housing; a fluid delivery system mounted to the housing and including a fluid distributor for delivering a cleaning fluid to the surface to be cleaned beneath the opening in the underside the housing; a fluid extraction system including a suction nozzle for recovering soiled cleaning fluid from the surface to be cleaned beneath the opening in the underside of the housing; a carriage assembly mounting the suction nozzle to the housing for movement with respect thereto and with respect to the surface to be cleaned; and an ultraviolet light element mounted on the carriage assembly for movement therewith and to emit ultraviolet light onto the surface to be cleaned, wherein the ultraviolet light element is powered by an electrical circuit comprising contact rings; wherein the electrical circuit further comprises sliding conductive contacts operatively associated with the contact rings and electrically coupled to the ultraviolet light element to conduct electricity from the contact rings to the ultraviolet light element during movement of the carriage assembly.