Vacuum cleaning tool for a vacuum cleaning apparatus

Details Vacuum cleaning tool for a vacuum cleaning apparatus Vacuum cleaning tool for a vacuum cleaning apparatus

1998-02-17

1999-09-14

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

A47L 530

Patent

active

059502754

ABSTRACT:
A vacuum cleaning tool having a housing that includes a connector for a vacuum hose of a vacuum cleaning apparatus is provided. Disposed in a brush chamber of the housing is a brush roller, the bristles of which project through a vacuum slot formed in the base plate of the housing. The brush roller is driven via a belt drive by an air turbine, which is provided in a turbine chamber of the housing. Provided between the brush chamber and the turbine chamber is a guide member for guiding the suction air stream that is to act upon the air turbine. In order when the vacuum cleaning tool is raised from the floor to reduce the drive power, the guide member is pivotably mounted in the housing of the tool. In a first operating pivot position the suction air stream is directed essentially tangentially against the air turbine to achieve a high drive power. In a second, non-operative pivot position the suction air stream is directed essentially radially against the turbine to achieve a low no-load speed.

REFERENCES:
patent: 5088149 (1992-02-01), Berg et al.
patent: 5293665 (1994-03-01), Worwag
patent: 5345650 (1994-09-01), Downham et al.

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