Filter bag for a vacuum cleaner
US5522908A · kind A · utility
11Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vacuum cleaner filter bag having multiple, nested inner bags and an outer bag for sequentially filtering a discharge from a vacuum cleaner, wherein each of the inner bags is adapted to cease filtering the discharge therethrough when the bag has become clogged with particulate matter. Each inner bag is designed to rupture, when clogged, in a manner to allow the discharge to bypass that bag and directly enter the next bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.