Cyclonic vacuum cleaner cone
US5137554A · kind A · utility
17Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Sep 9, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C5/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A one-piece, truncated conical annulus or dust separator body is molded from a high impact polystyrene material in such manner that a narrow rib is formed on the inner conical surface of the body to extend continuously in a spiral path from the larger to the smaller end thereof. A flange on its larger end is used to support the body in a vacuum cleaner chamber above a dust collecting canister. Dust-laden air enters the upper end of the body tangentially and cyclonically so that dust particles are urged outwardly by centrifugal forces, and are fed by the spiral rib downwardly into the canister.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.