Method and apparatus for operating vacuum cleaner
US4983895A · kind A · utility
18Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Jun 13, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/0077
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Method and apparatus for operating a vacuum cleaner in which by detecting a rotational speed of a variable speed fan motor adapted to give a suction force to the cleaner and its change range, the choking state of the filter and the state of the cleaner surface are discriminated, and a speed command of the fan motor is corrected on the basis of the result of the discrimination, and the comfortable cleaning can be performed by the optimum suction force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.