Dust bag arrangement and filling indicator for floor care apparatus
US7673368B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2005 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/19
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A floor care apparatus has a housing, including a wall, for storing a dust bag. The dust bag is angled relative to the wall and pressure sensors fill the space between the wall and dust bag. During use, as dust fills the bag, the bag expands and impinges upon a first of the pressure sensors and subsequently upon a second of the pressure sensors thereby indicating a filling of the bag with dust. A processor, connected to each of the pressure sensors, sorts a relative difference between signals of the sensors during dust filling. A visual indicator displays to users the relative fullness of the dust bag. To achieve angular disposition between the wall and dust bag, tapers, angular walls, ribs or combinations thereof are contemplated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.