초록 ▼

A mobile rug or carpet cleaner is provided with a support housing having front and rear wheels mounted so that the unit is tilted about the housing axis of the front wheels to engage and disengage a cleaning head with the carpet to be cleaned. The cleaner includes a fluid delivery system which provi

A mobile rug or carpet cleaner is provided with a support housing having front and rear wheels mounted so that the unit is tilted about the housing axis of the front wheels to engage and disengage a cleaning head with the carpet to be cleaned. The cleaner includes a fluid delivery system which provides fluid flow to the cleaning head, an auxiliary cleaning head and a spotter. The fluid delivery system utilizes a pump having an open conduit which continuously recycles cleaning fluid to a reservoir. The continuous recycle allows a solenoid valve in a line transporting fluid to the cleaning head spray nozzles to be abruptly closed without subjecting the entire fluid delivery system to a sudden, potentially damaging increase in fluid pressure. An automatic drain system utilizes a vacuum line to direct spent cleaning fluid to a removable waste tank for disposal. Suction can be selectively directed to the cleaning head or to the auxiliary head.

대표청구항 ▼

A surface cleaning unit having a mobile support housing, said cleaning unit comprising: a cleaning head having means for applying cleaning fluid onto an underlying surface, means for vacuuming the applied cleaning fluid from the surface, and an oscillating brush for working the cleaning fluid into t

A surface cleaning unit having a mobile support housing, said cleaning unit comprising: a cleaning head having means for applying cleaning fluid onto an underlying surface, means for vacuuming the applied cleaning fluid from the surface, and an oscillating brush for working the cleaning fluid into the underlying surface; an auxiliary cleaning head having means for applying cleaning fluid onto a surface and means for vacuuming the applied cleaning fluid from the surface, the auxiliary head being removable from the housing and operatively connected thereto by a vacuum line and a cleaning fluid line; a vacuum system for maintaining a partial vacuum in the auxiliary cleaning head and in a vacuum chamber associated with the cleaning head; means for selectively directing the partial vacuum to the vacuum chamber or to the auxiliary cleaning head; a cleaning fluid delivery system for delivering cleaning fluid from a reservoir to the cleaning head and to the auxiliary cleaning head; and front wheels mounted to the support housing about a common housing axis and at least one rear wheel to support the cleaning unit is an upright stable position, wherein the cleaning unit is capable of being tilted forwardly about the housing axis to a tilted position wherein the cleaning head engages the underlying surface and the at least one rear wheel is lifted off the underlying surface, the cleaning unit being balanced such that the housing axis is disposed forward of the center of gravity of the cleaning unit in the upright position and rearward of the center of gravity of the cleaning unit when moved to the tilted position, the cleaning unit being balanced to remain in either selected position whether the cleaning unit is turned on or off.