Patent · US Active

Vacuum cleaner having a filter

US8479355B2 · kind B2 · utility

3Cited by

3References

14Claims

0Family size

Assignee

MIELE & CIE. KG · DE

Inventors

Seyfettin Kara · Spenge, DE
Stefan Kreimeyer · Bielefeld, DE
Monika Seifert · Detmold, DE
Stefan Tiekoetter · Bielefeld, DE
Cornelius Wolf · Bielefeld, DE

Key dates

Filing date	Apr 27, 2011
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Jan 23, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47L9/2894
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

A vacuum cleaner includes a filter, an optically sensitive filter replacement indicator associated with the filter, and a light source configured to provide light on the optically sensitive filter replacement indicator. The light source is variably energizable according to a selectable power level of the vacuum cleaner.

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