| Patent Number |
Title Of Patent |
Date Issued |
| 5110284 |
Wear-resistant housing for an extrusion device |
May 5, 1992 |
| A corrosion-resistant and wear resistant housing for a screw extruder having one or more axis-parallel bores, each of which accommodates a screw of the extruder. Support sleeves, which have a smaller internal diameter than the screw bore or bores and which guide the rotating screw or scr |
| 5044757 |
Extrusion device for incorporating additives |
September 3, 1991 |
| A single or twin-screw device is used to incorporate additives in a thermoplastic plastics material melt. The or each barrel of the extruder includes a first feed aperture for the introduction of the melt and a second feed aperture downstream thereof for the introduction of the addit |
| 4940329 |
Degassing extruder |
July 10, 1990 |
| An extruder for degassing a thermoplastic plastics material melt comprises at least one screw mounted for rotation in a barrel. The barrel includes a first feed aperture for the introduction of the melt and a degassing port downstream thereof connectable to means for degassing the melt. |
| 4897236 |
Method and apparatus for the continuous manufacture of rubber or polymer-based mixtures containi |
January 30, 1990 |
| A process and an apparatus for continuously producing a rubber mixture. In the process, the constituents of the mixture are fed into a twin-screw extruder and are masticated and homogenized therein, with approximately 5% of the mixture being discharged and the remainder being recycled fo |
| 4786180 |
Back-pressure bearing arrangement for twin-screw extrusion devices |
November 22, 1988 |
| A back-pressure bearing arrangement for a twin-screw extrusion device which prevents any back-pressure forces from affecting a gear arrangement used for driving the screws. By disposing the back-pressure bearings between the gear arrangement and the housing of the extrusion device and by |
| 4550002 |
Method and apparatus for achieving optimum discharge from a twin-screw extrusion device |
October 29, 1985 |
| A method and apparatus for regulating a dose-charged twin-screw extrusion device so as to achieve optimum quantitative discharge of a material being extruded in an automatic manner. By monitoring the screw torque and the mass temperature and modifying the dosed supply of material and/or |
| 4299358 |
Method and apparatus for the automatic sidewise insertion of cores in winding machines |
November 10, 1981 |
| A method for the automatic sidewise pushing of a plurality of cores of any desired length into the wedge formed by the supporting rolls of an arborless winding machine, comprising measuring the length of the first core to be inserted, retracting a retractable pusher into a position just |
| 4298322 |
Venting means for screw extruders |
November 3, 1981 |
| In venting means for a screw extruder, particularly for thermo-plastics material, which venting means comprises a substantially vertical venting shaft communicating with the bore of a cylinder of the extruder and coupled to a low pressure source by a pipe, a pivotable flap which is m |
| 4136580 |
Power branching transmission |
January 30, 1979 |
| A power branching transmission, having two parallel output shafts, each of which carries a rotationally rigidly connected ouptput drive pinion, the output drive pinions being axially offset with respect to one another and each meshing with a respective rotatable ring gear and with a resp |
| 4127373 |
Extruder and twin roller calendering plant |
November 28, 1978 |
| Extruder and twin roller calendering plant for producing films or sheets of synthetic plastics or rubber material comprising a pair of calendering rollers mounted in a calender frame and an extruder nozzle head directed into the gap between the pair of calendering rollers, the calender f |
| 4127331 |
Twin screw extruders |
November 28, 1978 |
| A twin screw extruder comprising a cylinder having twin bores therein to receive the twin screw of the extruder and a circular casing with at least one passage to permit heating or cooling fluid to flow between the cylinder and the casing, in which the cylinder has a generally circular |
