Method and apparatus for operating vacuum cleaner
US4880474A · kind A · utility
114Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Oct 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/93
- 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 cleaned 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.