Agitating canister for viscous fluids dispensed from multiple fluid dispensers
US7959348B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2007 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Jan 23, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved canister assembly for a multi-fluid dispenser is shown and described. The canister assembly comprises an annular outer shell with an outer cylindrical wall connected to a bottom which, in turn, is connected to an inner cylindrical wall that serves as a standpipe. The bottom includes an outlet connected to a pump A hollow agitator shaft slides over the inner standpipe and includes a plurality of outwardly extending blades for stirring or “agitating” the fluid. An annular screen element is disposed below the bottom end of the agitator shaft. Beneath the annular screen element is a lower agitator blade element The lower blade element and the lower end of the agitator shaft are snap-fitted together with the annular screen element sandwiched therebetween. The screen element includes a cylindrical shell with the annular screen disposed upwards from the lower end of the cylindrical shell so that the screen is spaced above the bottom wall and to make room for the lower blade element. Blades disposed on the lower end of the agitator shaft scrape or brush a top surface of the annular screen and the blades of the lower blade element scrape or brush a bottom surface of the annular …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.