Upright extraction cleaning machine with unitary accessory hose duct
First Claim
1. A portable surface cleaning apparatus, comprising:
- a housing adapted for movement along a surface to be cleaned;
a liquid dispensing system mounted to the housing and comprising;
a liquid dispenser for applying liquid to the surface to be cleaned;
a liquid supply tank for holding a supply of cleaning liquid;
a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser;
a liquid recovery system mounted to the housing and comprising;
a recovery tank removably mounted in the housing and having a liquid recovery chamber for holding recovered liquid, the recovery tank further having an inlet opening;
a suction nozzle at a front portion of the housing, forwardly of the recovery tank and adapted to draw dirty liquid from the surface to be cleaned;
a first working air conduit extending rearwardly from the suction nozzle to an inlet opening to the recovery chamber;
an accessory hose mounted at one end to a rear portion of the housing behind the recovery tank for optional above floor cleaning;
a second working air conduit connected at a first end to the accessory hose one end and, at another end forwardly of the recovery tank, connected to the inlet opening to the recovery chamber, the second working air conduit being formed of a unitary duct;
a vacuum source in fluid communication with the recovery chamber for generating a flow working air from the nozzle and the accessory hose through the first and second working air conduits and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and accessory hose and the first and second working air conduits, and into the recovery chamber to thereby recover dirty liquid from the surfaces to be cleaned; and
a conversion valve mounted between the first and second working air conduits and the inlet to the recovery chamber to selectively connect the vacuum source to either the suction nozzle or to the accessory hose.
3 Assignments
0 Petitions
Accused Products
Abstract
An extraction cleaning apparatus including a base housing, a fluid recovery system including a tank having a fluid recovery chamber for holding recovered fluid, a working air conduit, an above floor accessory hose mounted at one end to the housing for optional above floor cleaning, and a unitary duct mounted to the housing and connected at a first end to the accessory hose one end and, at another end, connected to the working air conduit at an accessory hose inlet a conversion valve in the working air conduit between the suction nozzle and the accessory hose inlet to selectively connect the vacuum source to either the suction nozzle or to the accessory hose. Portions of the unitary duct are flat and an intermediate portion of the unitary duct extends beneath the recovery tank.
146 Citations
11 Claims
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1. A portable surface cleaning apparatus, comprising:
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a housing adapted for movement along a surface to be cleaned;
a liquid dispensing system mounted to the housing and comprising;
a liquid dispenser for applying liquid to the surface to be cleaned;
a liquid supply tank for holding a supply of cleaning liquid;
a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser;
a liquid recovery system mounted to the housing and comprising;
a recovery tank removably mounted in the housing and having a liquid recovery chamber for holding recovered liquid, the recovery tank further having an inlet opening;
a suction nozzle at a front portion of the housing, forwardly of the recovery tank and adapted to draw dirty liquid from the surface to be cleaned;
a first working air conduit extending rearwardly from the suction nozzle to an inlet opening to the recovery chamber;
an accessory hose mounted at one end to a rear portion of the housing behind the recovery tank for optional above floor cleaning;
a second working air conduit connected at a first end to the accessory hose one end and, at another end forwardly of the recovery tank, connected to the inlet opening to the recovery chamber, the second working air conduit being formed of a unitary duct;
a vacuum source in fluid communication with the recovery chamber for generating a flow working air from the nozzle and the accessory hose through the first and second working air conduits and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and accessory hose and the first and second working air conduits, and into the recovery chamber to thereby recover dirty liquid from the surfaces to be cleaned; and
a conversion valve mounted between the first and second working air conduits and the inlet to the recovery chamber to selectively connect the vacuum source to either the suction nozzle or to the accessory hose. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A portable surface cleaning apparatus, comprising:
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a housing adapted for movement along a surface to be cleaned;
a liquid dispensing stem mounted to the housing comprising;
a liquid dispenser for applying liquid to the surface to be cleaned;
a liquid supply tank for holding a supply of cleaning liquid;
a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser;
a liquid recovery system mounted to the housing and comprising;
a recovery tank removably mounted in the housing and having a liquid recovery chamber for holding recovered liquid, the recovery tank further having an inlet opening;
a suction nozzle at a front portion of the housing, forwardly of the recovery tank and adapted to draw dirty liquid from the surface to be cleaned;
a first working air conduit extending rearwardly from the suction nozzle to an inlet opening to the recovery chamber;
an accessory hose mounted at one end to a rear portion of the housing behind the recovery tank for optional above floor cleaning;
a second working air conduit connected at a first end to the accessory hose one end and, at another end, connected to the inlet opening to the recovery chamber, the second working air conduit having a central portion that lies directly beneath the recovery tank;
a vacuum source in fluid communication with the recovery chamber for generating flow of working air from the nozzle and the accessory hose through the firs and second working air conduits and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and accessory hose and the first and second working air conduits, and into the recovery chamber to thereby recover dirty liquid from the surfaces to be cleaned; and
a conversion valve mounted between the first and second working air conduits and the inlet opening to the recovery chamber to selectively connect the vacuum source to either the suction nozzle or to the necessary hose. - View Dependent Claims (8, 9, 10, 11)
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Specification