Screen cylinder or plate having a grooved first face and a stepless second face
US5587077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49604
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method of manufacturing a screen product and to a screen product manufactured according to the method. In particular, the invention relates to the manufacture of a screen or a filter plate or a cylinder by a new machining method by which a product receives flow properties substantially better than the ones of the prior art devices. It is characteristic of the invention that an aperture having curved wall surfaces is machined in one work phase in the plate in the depth direction. It is characteristic of the screen product of the invention that the screening aperture is progressively widened in the direction of the flow through the plate, and preferably inclined under the ridge adjacent the groove in a plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.