Polymeric sludge collector flight
US4663042A · kind A · utility
22Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/2472
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hollow, polymeric sludge collector flight is provided having a sigma-shaped cross-section, including a wedge-shaped transverse indentation on its forward face, a vertically extending wear lip on its scraping edge, and a transverse gap on its rear face. The gap allows free circulation of liquid within the non-buoyant flight. The indentation structurally stiffens the mid-span section of the flight. Where additional stiffness is required, filler blocks may be placed between mounting blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.