Dust indication system for vacuum cleaner
US5815884A · kind A · utility
169Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2857
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner includes an optical dust sensor for detecting a quantity of dust which sensor is provided at a predetermined position of a suction path for sucking air by a suction force of the vacuum cleaner, whereby an output signal is supplied to a display device so that a display corresponding to the quantity of the sucked dust, which signal is output from the optical dust sensor and is varied in a stageless manner corresponding to the quantity of the dust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.