Co-rotating multiple screw processor
US4131371A · kind A · utility
18Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Aug 3, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a screw processor having multiple fully intermeshed co-rotating in-phase screws each provided with equal numbers of threads, each of said screws having longitudinally staged eccentric cross-sections preselected so that at least one thread of each screw spreads process material over the barrel bore and at least one other thread of each screw collects said process material and transfers it to a co-acting screw, which thereupon repeats the spreading-collecting-transfer cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.