Clutchless self-propelled vacuum cleaner and nozzle height adjustment mechanism therefor
US7222390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Mar 4, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/325
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A clutchless, direct drive, self-propelled vacuum cleaner includes a nozzle base having a suction inlet and a housing pivotally mounted on the nozzle base. A suction source is mounted to one of the nozzle base and the housing. A filter chamber is located in one of the nozzle base and the housing. A drive motor is mounted to one of the nozzle base and the housing, the drive motor having an output shaft. A transmission is directly coupled to the output shaft of the motor. A driven wheel is directly coupled to the transmission. Also disclosed is a height adjustment mechanism for the vacuum cleaner, the height adjustment mechanism employing the drive assembly of the vacuum cleaner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.