Vacuum cleaner and method for operating the same
US5155885A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1989 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Oct 3, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2821
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An output of a electric driven blower in a cleaner main body is controlled in response to a detection value of a pressure sensor which detects an operation condition in the cleaner main body. A change-over level setting value is provided as a control value for the sensor so as to form a judgment point for changing over a control condition of the blower. A return level setting value is provided as a control value for the sensor so as to form a judgment point for returning to a previous control condition of the blower from a changed-over condition of the blower. When the detection value of the sensor is more than the change-over level setting value, the return level setting value is set higher than the change-over setting value, thereby the output of the blower is increased, or the return level setting value is set a lower than the change-over level setting value, thereby the output of the blower is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.