Dispersal valve and canister
US5218983A · kind A · utility
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | May 4, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4891
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispersal valve and canister with the dispersal valve resiliently supporting a loaded canister in the dispersal valve. The canister includes a visual indicator to permit a user to determine when the canister needs to be replaced with the canister having an air pocket for retaining at least a portion of the dispersant above the liquid with the canister including sides to funnel the unused dispersant into the trough to displace the dispersant in the liquid that is dispersed into the liquid so that the rate of dispersant of dispensing material into the liquid remains substantially constant during a substantial portion of the time the dispersal valve dispenses material into the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.