Cleaning tool head with multi-filament seal
US6055699A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4088
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An adapter plate, removably mounted with respect to the cleaning tool head of a continuous flow recycling cleaning device, supports a fluid flow barrier. The barrier is formed of multiple resilient filaments parallel to one another and packed closely together to resist air passage through the barrier. The filaments are supported in cantilevered fashion, and are individually and locally deformable as the tool head is placed in an operating position near a floor or other surface to be cleaned. The barrier thus conforms to the topography of the surface being cleaned, to achieve a better seal. The barrier is used in combination with a more porous layer, e.g., a carpet tile or a less tightly packed filament arrangement, to channel air from outside of the tool head into an intake compartment while blocking passage to an exhaust compartment inside the tool head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.