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US 5,493,752 AGranted
Upright carpet and upholstery extractor
AssigneeThe Hoover Company
InventorsDarwin S. Crouser, Gregg A. McAllise, Jeffery A. Morgan, Fred S. Sindlinger
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AssigneeThe Hoover Company
InventorsDarwin S. Crouser, Gregg A. McAllise, Jeffery A. Morgan, Fred S. Sindlinger
Estimating the term…
A novel upright carpet cleaning extractor is disclosed which may be conveniently converted from the floor cleaning mode to the upholstery and/or stair cleaning mode. The overall configuration and operation of the extractor is similar to that of a typical upright vacuum cleaner and may be operated in the forward or reverse direction similar to a typical upright vacuum cleaner. When in the floor cleaning mode, cleaning solution is supplied to a solution distributor by gravity flow. However, when converted to the upholstery cleaning mode an auxiliary, air turbine driven cleaning solution pump is automatically energized for supplying pressurized cleaning solution to an upholstery or stair cleaning nozzle.
In an upright carpet extractor having means for applying cleaning solution to a floor surface and vacuuming said solution from said floor surface, the improvement comprising:
A carpet extractor comprising:
A convertible carpet and upholstery cleaner having a floor cleaning mode and a converted upholstery cleaning mode comprising:
In a carpet extractor having means for applying cleaning solution to a floor surface and vacuuming said solution from said floor surface, the improvement comprising:
In a vacuum cleaner usable as an extractor, wherein said vacuum cleaner includes a vacuum producing source, means for separating and recovering liquid from vacuumed air, nozzle means for vacuuming the surface to be cleaned, a flexible hose fluidly connecting said nozzle means with said liquid recovery means, a cleaning solution supply tank, an applicator for applying cleaning solution to the surface being cleaned, an air turbine, a cleaning solution supply pump, drivingly connected to said air turbine, said air turbine having an intake port and a discharge port said discharge port fluidly communicating with said vacuum source whereby air may be drawn into said intake port and through said air turbine, a cleaning solution supply tube fluidly connecting said cleaning solution supply pump and said cleaning solution applicator, the improvement comprising a housing containing therein at least the said air turbine driven solution supply pump, an opening in said housing having a hinged door whereby said opening may be selectively opened or closed, said air turbine intake port aligned with said opening such that air may enter said intake port through said opening, sealing means between said door and said intake port whereby said door, when in the closed position, prevents the flow of air into said turbine intake port thereby de-energizing said air turbine.
Dependencies are inferred from the claim text.