Extruder
Abstract
Abstract EXTRUSION APPARATUS OF THE KIND INCLUDING A WORN FOR DRIVING HEAT-SOFTENABLE MATERIAL ALONG A TUBULAR HOUSING IN, WHICH THE WORM ROTATES BETWEEN A HOPPER AT ONE END OF THE TUBE AND AN EXTRUSION DIE AT THE OTHER END OF THE TUBE, THE WORM HAVING AN INTERMEDIATE SECTION OF ITS OPPOSITE SIDES WHICH IS ADAPTED TO CAUSE MIXING AND COMPRESSION OF THE MATERIAL PASSING ALONG THE TUBE, WHEREIN THE SAID INTERMEDIATE SECTION INCLUDES HELICAL FINS, PREFERABLY OF MUCH LESSER PITCH THAN THAT OF THE REMAINDER OF THE WORM, BETWEEN OPPOSITE ENDS OF EVERY TWO OF WHICH THERE EXTENDS AN INTERMEDIATE FIN GENERALLY IN A PLANE CONTAINING THE LONGITUDINAL AXIS OF THE WORM AND OF LESSER HEIGHT RADIALLY OF THE WORM THAN SAID HELICAL FINS.
Inventors
- 👤 Klaus Koch
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |