Check valve and pump receptor assembly
US4507061A · kind A · utility
3Cited by
20References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Sep 14, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reservoir of liquid having a false bottom forming a lower chamber of reduced pressure produced by a plurality of removable pumps suspended in apertures in said false bottom, each of which apertures is provided with a two-piece receptor and check valve assembly; the receptor of which forms a guide and hydraulic slip-fit for the lower intake end of its pump and the other part below said receptor extends into said reduced pressure chamber comprises a cylindrical housing with a check valve at its lower end to close off that aperture to the reduced pressure chamber when its pump is not running or has been removed for repair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.