Flowable material passage with interposable slide member
US4359387A · kind A · utility
8Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1980 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Apr 14, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Flowable material is pumped between upstream and downstream passages in a body through an aperture portion formed in a side member that communicates between the passages. An annular seal member engages the slide member under the urging of a Belleville spring. The slide member, formed as a filter, has a region of uniform porosity that is moved progressively through the path of flow of the material for changing the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.