Attachment nozzle for a vacuum cleaning system
AssigneeVorwerk & Co. Interholding GmbH
InventorsHeinz-Jurgen Ahlf, Wieland Guhne, Peter Wulf, Hans-Peter Simm
Life of this patent
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Abstract
The invention is directed to an attachment nozzle for a vacuum cleaning system such as a vacuum cleaner or the like which includes a rotating brush. A modular step-up gear transmission is interposed between the brush and the air turbine which runs in the suction air stream. The attachment nozzle includes an outer ring region wherein a plurality of air-inlet apertures are formed which are covered either partially or entirely by means of a ring-shaped body which is rotatably mounted on the end portion of the housing. A cup-shaped recess is formed centrally of the plurality of air inlet openings and defines a cup-shaped recess for receiving the modular gear transmission therein.
Claims7
An attachment nozzle for a vacuum cleaning system such as a portable vacuum cleaner, built-in vacuum cleaning arrangement or the like, the attachment nozzle comprising:
- a housing attachable to the vacuum cleaning system, said housing having a front end portion;
- a brush rotatably mounted in said front end portion of said housing;
- annular air inlet means for admitting and adjusting the flow of a stream of suction air into said housing, said air inlet means being arranged at an outer peripheral region of said housing;
- an air turbine rotatably mounted in said housing in the path of said stream of suction air so that said air turbine is rotatably driven thereby;
- separate encapsulated gear means for operatively connecting said air turbine to said brush;
- and,
- a fixed wall structure mounted in said housing centrally of said annular air inlet means and defining cup-shaped recess means for removably receiving said gear means therein, said cup-shaped recess means facing into the interior of said housing and away from said brush.
An attachment nozzle for a vacuum cleaning system such as a portable vacuum cleaner, built-in vacuum cleaning arrangement or the like, the attachment nozzle comprising:
- a housing attachable to the vacuum cleaning system, said housing having a front end portion;
- a brush rotatably mounted in said front end portion of said housing;
- air inlet means for admitting a stream of suction air into said housing, said air inlet means being disposed at the periphery of said front end portion so as to be in surrounding relationship to said brush;
- an air turbine rotatably mounted in said housing in the path of said stream of suction air so that said air turbine is rotatably driven thereby;
- modular gear means for operatively connecting said air turbine to said brush;
- and,
- a rigid wall structure mounted centrally in said housing and axially to the rear of said brush, said wall structure having a cylindrical wall thereon defining cup-shaped recess means for receiving said modular gear means therein, said cup-shaped recess means facing into the interior of said housing and toward said air turbine and away from said brush;
- said air turbine being a cup-shaped body having a plurality of vanes at the outer surface thereof, said cup-shaped body being mounted in said housing so as to face and axially overlap said cup-shaped recess means in telescopic fashion to conjointly define therewith a labyrinth-like configuration thereby hindering the accumulation of dust particles from the air stream from reaching said gear means and said drive shaft of said air turbine while at the same time defining an axially compact arrangement within said housing of said air turbine and said cup-shaped recess means with said modular gear means seated therein.
Dependencies are inferred from the claim text.