Apparatus and method for moving a flow of air and particulate through a vacuum cleaner
US6348106B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D23/003
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for moving a flow of air and particulates through a vacuum cleaner. In one embodiment, the apparatus includes a rotary propulsion device having a rotatable hub with a plurality of vanes. The flow area between the vanes can be approximately constant from a region adjacent the hub to a region spaced apart from the hub. A housing is disposed about the vanes and the flow of air and particulates can enter the housing through a single inlet aperture and exit the housing through two spaced apart outlet apertures. The vanes can be arranged on the hub such that when one vane is centered relative to one of the outlet apertures, the vane closest to the other outlet aperture is offset from the center of that aperture to control the noise generated by the propulsion device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.