Patent US4222728A successfully refreshed from Google Patents.
US4222728A
Expired / Lapsed
US
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Apparatus for processing synthetic thermoplastic material
Assignee: EREMA Engineering Recycling Maschinen und Anlagen GesmbH
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Filing: 1979-02-22
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Granted: 1980-09-16
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Expires: 1999-02-22
Abstract
Abstract Apparatus for processing synthetic thermoplastic material, such as sheeting, hollow bodies, and splinters, comprises an upright receiving container, which is adapted to be charged from above, and at least one disintegrating and blending member, which is set with knives and is mounted on the container near its bottom and rotates about the axis of the container. The receiving container has in its side wall an opening which is disposed on the level of the disintegrating and blending member and leads to a screw extruder, which is tangential to the receiving container and directly connected thereto.
Inventors
- 👤 Helmut Bacher
- 👤 Helmuth Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/04; B29B17/0412; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/286; B29C48/36; B29C48/395; B29C48/397; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29B2017/0424; B29B2017/048; B29C48/03; B29C48/04; B29C48/288; B29K; B29K2105/00; B29K2105/26; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S264/00; Y10S264/911; Y10S264/918
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
204 words
An apparatus for processing synthetic thermoplastic material, comprising (a) an upright receiving container having a vertical axis, a side wall surrounding the axis, a bottom wall and an upper end opposite the bottom wall, the upper end being adapted to receive the synthetic thermoplastic material to be charged into the container, and (1) the side wall of the container defining an opening near the bottom of the container, (b) a disintegrating and blending means for the synthetic thermoplastic material mounted in the container to revolve about the axis substantially on the level of the opening, the revolving disintegrating and blending means (1) including knife means and (2) imparting to the material a centrifugal force causing the material to move radially outwardly through the opening, and (c) a screw extruder including a housing and a screw conveyor mounted in the housing, the screw extruder extending tangentially to the side wall of the container and the housing of the screw extruder being connected to the side wall, the opening in the side wall being in communication with the interior of the housing whereby the outwardly moving synthetic thermoplastic material is fed to the screw conveyor by the centrifugal force through the opening in the side wall.
Claim 2
Independent Claim
204 words
An apparatus for processing synthetic thermoplastic material, comprising (a) an upright receiving container having a vertical axis, a side wall surrounding the axis, a bottom wall and an upper end opposite the bottom wall, the upper end being adapted to receive the synthetic thermoplastic material to be charged into the container, and (1) the side wall of the container defining an opening near the bottom of the container, (b) a disintegrating and blending means for the synthetic thermoplastic material mounted in the container to revolve about the axis substantially on the level of the opening, the revolving disintegrating and blending means (1) including knife means and (2) imparting to the material a centrifugal force causing the material to move radially outwardly through the opening, and (c) a screw extruder including a housing and a screw conveyor mounted in the housing, the screw extruder extending tangentially to the side wall of the container and the housing of the screw extruder being connected to the side wall, the opening in the side wall being in communication with the interior of the housing whereby the outwardly moving synthetic thermoplastic material is fed to the screw conveyor by the centrifugal force through the opening in the side wall.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, further comprising a heater for the screw extruder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |