Quiet central vacuum power unit
US6779228B2 · kind B2 · utility
28Cited by
57References
20Claims
0Family size
Inventors
Key dates
| Filing date | Jan 24, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Aug 8, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L5/38
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention relates to a central vacuum power unit comprising in combination a canister, a chamber for collecting debris, a first plate, a second plate, a third plate, a duct, a motor-fan assembly, a filter, and a first baffle. The duct extends between the first and second plates and is in fluid flow communication with respective openings defined in the first and second plates. The sidewall of the canister, the first and the second plates and the duct defines an acoustic damping chamber covered with a lining of sound absorbing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.