Airflow indicator assembly and method for vacuum cleaner
US9532689B2 · kind B2 · utility
1Cited by
37References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2014 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Jun 17, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/19
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner having an airflow outlet and an airflow indicator assembly removably disposed at the outlet. The airflow indicator assembly includes a pair of fins attached to a spine and a needle disposed between the pair of fins. During operation of the vacuum cleaner, exhaust air is directed through the outlet and towards the needle, pushing the needle thereby indicating whether service is needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.