Abstract: A gravity feed liquid cleaning solution supply system particularly suitable for use on an upright hot water carpet extractor having a free floating brush assembly is disclosed. The unique system generally comprises a stationary fluid supply manifold positioned above a free floating brush assembly having multiple laterally disposed rotary brushes rotatable about vertical axle shafts suspended from a laterally disposed brush support beam. The support beam includes open top troughs, one above each individual brush, into which liquid cleaning solution cascades from the overhead manifold. From each fluid trough, the cleaning solution is conveyed to the center cup of an associated rotary brush through a conduit integrally molded into the brush support beam. By this unique structure liquid cleaning solution is supplied to the free floating brush assembly without restricting the floating movement of the scrubbing brushes over the surface being cleaned.

Abstract: A novel upright, hot water carpet cleaning extractor is disclosed. The overall configuration and operation of the extractor is similar to that of a typical upright vacuum cleaner and may be similarly operated in both the forward and reverse direction. The herein taught extractor comprises a base frame including the floor suction nozzle, suction fan, cleaning solution distributor, and a removable combination air/liquid separator and recovery tank. A manipulative push-pull handle is pivotly attached to the base frame having a removable cleaning solution supply tank supported thereon. The herein taught upright extractor is easily stored, self contained, easy to operate and requiring minimal effort by the operator.

Abstract: A vacuum cleaner conversion arrangement is disclosed which, particularly, may be advantageously applied to a dirt cup cleaner. In this application, the conversion hose confluently communicates with the dirt cup when the cleaner is in converted condition so that suction air flows from the dirt cup to the motor-fan system of the vacuum cleaner in either of its floor or hose modes of operation. The conversion arrangement generally includes a conversion adapter having a closure means for sealing off its conversion hose and stanchions for conveniently mounting the ends of the same hose when it is not in use. The closure means may take the form of an outer door or an internal flapper valve plate.

Abstract: A filter shaking arrangement includes a resilient frame disposed around an expandable filter, both of which are expanded by a fan induced air flow. The resilient frame returns resiliently to its original form upon the cessation of this air flow. This contraction of the resilient frame tends to dislodge dirt adhering to the filter as it also is forced back to its original shape.

Abstract: The herein disclosed invention relates to an improved liquid supply tank which may be releasibly attached to an ambulatory machine such as an upright domestic carpet cleaning extractor. A unique combination carrying handle and securement latch is taught which pivotly attaches to the tank for carrying when the tank is removed from the machine. The handle includes latching means that serves to secure the tank to the machine when the tank is attached thereto.