Surface cleaning head with dual rotating agitators
US11278171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2016 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | May 9, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A surface cleaning head with dual rotating agitators (e.g., a leading roller and a brush roll) may be used to facilitate capturing of debris in the air flow into a suction conduit on the underside of the surface cleaning head. The leading roller is generally positioned adjacent to and in advance of the opening of the suction conduit. The rotating brush roll may be located in the suction conduit with the leading roller located in front of and spaced from the brush roll, forming an inter-roller air passageway therebetween. The leading roller may provide a softer cleaning element than the brush roll and may also have an outside diameter that is less than the outside diameter of the brush roll. The surface cleaning head may also include debriding protrusions contacting the leading roller and/or a leading bumper that extends in front of the leading roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.