Blender
US7267475B2 · kind B2 · utility
11Cited by
15References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 2003 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Jul 23, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mixing apparatus and method wherein the mixing apparatus includes a hopper having a port piston for periodically retracting to open a fluid port to allow a slug of gas to be quickly injected into the bottom of a hopper, which produces a mixing and blending of the materials in the hopper as the slug of gas flows upward through the materials in the hopper. The port piston periodically closes to seal the fluid port without allowing the material in the hopper to backflow, which would prevent between the port piston and a hopper sealing member from being brought into sealing engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.