Liquid treatment apparatus
US4136032A · kind A · utility
13Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Dec 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87362
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A flow control valve for multicycle liquid treatment apparatus has a pair of rotatable, slotted circular discs at its opposite ends. Rotation of the discs causes the slots to be selectively aligned with various ports, passages, holes and channels so as to control the direction and duration of liquid flow during the different cycles of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.