Device
US4801244A · kind A · utility
32Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2035/351
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device in a submersible pump or mixer prevents solid bodies from entering a housing containing a mechanical seal. The device has a helically formed groove so directed, that pollutant material is fed in a direction away from the mechanical seal, and the device has a cutting means to cut the pollutant material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.