Cleaner head for a vacuum cleaner
US8966709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/0427
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cleaner head that includes a suction inlet for admitting a first airflow, a turbine inlet for admitting a second airflow, an outlet for discharging the first airflow and the second airflow and an agitator and its drive assembly. A first airflow path then carries the first airflow from the suction inlet to the outlet, and a second airflow path carries the second airflow from the turbine inlet to the outlet. The drive assembly includes a turbine that is driven by the second airflow. A baffle is located in the second airflow path and is movable between an open position in which the second airflow path is unrestricted and a closed position in which the second airflow path is restricted. The baffle is biased in the open position and moves to the closed position when the dynamic pressure of the second airflow at the baffle exceeds a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.