Patent · US Expired

Dust filter bag for a vacuum cleaner

US5468271A · kind A · utility

17Cited by

8References

14Claims

0Family size

Assignee

VORWERK & CO. INTERHOLDING GMBH · DE

Inventors

Ralf Sauer · Overpelt, BE
Stefan Kraut-Reinkober · Leverkusen, DE
Ludger Helmes · Velbert, DE
Werner Hoyer · Wuppertal, DE

Key dates

Filing date	Oct 27, 1993
Grant date	Nov 21, 1995
Priority date	—
Expiry date	Oct 27, 2013

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47L9/1436
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

A dust filter bag for a vacuum cleaner, having a holding plate (1) of a cardboard paper material, which holding plate (1) has a sealing-closable opening (9) for a suction pipe of a vacuum cleaner, the opening (9) being adapted to be closed from the outside by a separate closure tab (10) which has an insertion region, and, in order to obtain an improved dust filter bag, the cardboard-paper material is developed in three layers (layers a, b, c) in the region of the opening (9) and in at least two layers in the remaining region of the holding plate (1), a rubber gasket (11) being gripped between two layers, preferably the second and third layers (b, c).

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