Back to results
US 7,744,680 B2Granted
Vacuum-cleaner bag and method for extending the service life of vacuum-cleaner bags
AssigneeEurofilters N.V.
InventorsJan Schultink, Ralf Sauer
Life of this patent
Estimating the term…
Abstract
Described is a vacuum-cleaner bag which is made of an air-permeable filter material and forms a closed dust-collecting chamber, the vacuum-cleaner bag containing a material which can be whirled up under a given air flow.
Claims27
A vacuum cleaner bag, comprising of:
- an air-permeable filter material disposed inside the vacuum cleaner bag,
- wherein the bag includes, per 1000 cm3 volume, between 1 and 30 g of the material which is whirled up under an air flow, the material being whirled up having a volume per mass unit between 5 cm3/g to 100 cm3/g, and
- wherein the material being whirled up is kept in circulation under the air flow in an operating state to bind sucked-in dust already in the vacuum cleaner bag.
Dependencies are inferred from the claim text.