Apparatus for producing rubber mixtures
US5368383A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 15, 1994 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Feb 15, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/826
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for producing rubber mixtures, including a ram kneader for the master batch, and disposed therebelow a ram-less kneader that operates in a batch process and to which the master batch is supplied without intermediate storage thereof. To rapidly cool the master batch in the ram-less kneader and to be able to reliably and rapidly carry out the finish mixing process, only a portion of the active surface of the rotor of the ram-less kneader is provided with a surface wear protection layer. This layer is preferably provided only in the region of the active edges of the raised portions of the rotor, while the remaining portion of the active surface is free of such a wear protection layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.