Collecting apparatus
US4290165A · kind A · utility
35Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Feb 12, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L7/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A collecting apparatus having a nozzle through which air is released to form a jet flow, a restriction provided at a position spaced from the nozzle in the direction of the jet flow and a vacuum sleeve defining a large vacuum space between the nozzle and the restriction. A collecting tube is connected to the vacuum sleeve to open to the vacuum space. A high vacuum is established in the vacuum space so that large dusts are sucked through the collecting tube and collected in a collecting bag attached to the restriction or scattered through the restriction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.