Patent · US Expired

Attachment nozzle for a vacuum cleaning system

US4538322A · kind A · utility

7Cited by

3References

7Claims

0Family size

Assignee

VORWERK & CO. INTERHOLDING GMBH · DE

Inventors

Heinz-Jurgen Ahlf · Bensberg, DE
Wieland Guhne · Remscheid, DE
Peter Wulf · Ennepetal, DE
Hans-Peter Simm · Wuppertal, DE

Key dates

Filing date	Jun 6, 1984
Grant date	Sep 3, 1985
Priority date	—
Expiry date	Jun 6, 2004

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47L9/0472
WIPO fieldFurniture, games
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.