Handle for a wand of a vacuum cleaning appliance
US8671517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Feb 15, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/0444
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A handle for a wand of a vacuum cleaning appliance includes a handgrip portion and a conduit for receiving an air flow. The handle includes an aperture for admitting ambient air into the conduit. A first valve occludes a first portion of the aperture, and a second valve occludes a second portion of the aperture. A control mechanism moves the first and second valves away from the aperture to admit ambient air into the conduit. To reduce the force required to move the valves away from the aperture, the control mechanism is configured to move the second valve away from the second portion of the aperture before moving the first valve away from the first portion of the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.