Central vacuum cleaner and its central unit
US7464436B2 · kind B2 · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2003 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L5/38
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A central vacuum cleaner including a central unit provided with a suction joint and an exhaust joint as well as a suction hose. According to the invention, the central vacuum cleaner includes an operating unit (1) having adaptors for attaching the central unit (2) to the operating unit, an exhaust junction (3) for connecting the exhaust joint of the central unit to the operating unit, a filter (4) for filtering the air flow from the exhaust joint and exhaust junction, as well as an outlet port (5) for directing the air flow that travelled through the filter into the air space surrounding the operating unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.