Mixing apparatus
US4184772A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1977 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Jul 11, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92885
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention provides in a continuously operating device having a mixing section comprising opposite-handed helical threads in each of the two relatively rotatable components which threads vary in cross-sectional area in complementary fashion so as to produce a layer-by-layer material transfer and shear working between the said components, that the said opposite handed helical threads in said mixing section complement one another substantially also in respect to their helix-angles to the extent that if one helix angle is between 0.degree.and 45.degree. the other is between 45.degree. and 90.degree., to bring about, viewed with respect to the shear-plane-area, a subdivision sufficient for the mixing and compounding requirement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.