Vacuum cleaner having a dual filter assembly
US6113663A · kind A · utility
97Cited by
69References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Nov 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner having a dual filter assembly includes a filter cage, a primary filter disposed on the filter cage, and a secondary filter disposed downstream of the primary filter. A float valve between the primary filter and the secondary filter inhibits liquid from coming into contact with the secondary filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.