Agitator motor projection system for vacuum cleaner
US6351872B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2889
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner includes a housing incorporating a handle assembly and a nozzle assembly, a suction fan and cooperating suction fan drive motor carried on the housing, a rotary agitator held in the nozzle assembly, an agitator drive motor carried on the housing and a motor control and protection circuit. The motor control and protection circuit includes a handle switch to de-energize the agitator motor when the handle is displaced to an upright storage position. The motor control and protection circuit may also include an above-floor switch and cooperating activation to de-energize the agitator drive motor when the nozzle assembly is displaced above the floor for bare floor cleaning. Additionally, the motor control and protection circuit may include a hose switch and activator, a selection switch and activator, a circuit breaker and a temperature sensor switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.