Patent · US Active

Indicator device for a filter, vacuum cleaner, and method of filtering a vacuum cleaner exhaust stream

US8647408B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

MIELE & CIE. KG · DE

Inventors

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

Key dates

Filing date	Apr 27, 2011
Grant date	Feb 11, 2014
Priority date	—
Expiry date	Dec 16, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47L9/19
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

An indicator device for a filter includes a filter replacement indicator that is actuatable by thermal expansion. The indicator device can be included in a filter. Also, a vacuum cleaner including a filter having the indicator device.

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