Patent US3572646A successfully refreshed from Google Patents.
US3572646A
Expired / Lapsed
US
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Apparatus for transforming and mixing deformable media
Assignee: Individual
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Filing: 1968-04-16
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Granted: 1971-03-30
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Expires: 1988-04-16
Abstract
Abstract Apparatus for transforming and mixing deformable media, such as plastics, comprises a cylindrical casing having a rotor mounted for coaxial driven rotation in the cylinder which is provided with an inlet for the medium. The rotor is provided with a conveyor screw for the medium, and following the screw in the direction of flow the rotor comprises diverging diffusor portions alternating with cylindrical rotor portions. The end of the rotor adjacent the outlet of the cylinder is formed as a converging diffusor. The different rotor portions coact with surrounding wall portions of the cylinder having portions with a surface finish differing from that of the rotor portions to subject the medium flowing in the space between the rotor and the surrounding casing wall to differing frictional resistance along the external and internal layers thereof.
Inventors
- 👤 Heinz Kocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/421; B22; B22D; B22D11/00; B22D11/10; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, means for feeding a deformable medium into said cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said Stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said rotor, in the zone of the inlet of said cylinder, being provided with a conveyor screw in the shape of a logarithmic spiral arranged upstream of said unstable diverging diffusor, the thrust face of said conveyor screw being of parabolic cross section forming a transcendental curve provided with a disappearing curvature in its course.
Claim 2
Dependent Claim
145 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, means for feeding a deformable medium into said cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said Stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said rotor, in the zone of the inlet of said cylinder, being provided with a conveyor screw in the shape of a logarithmic spiral arranged upstream of said unstable diverging diffusor, the thrust face of said conveyor screw being of parabolic cross section forming a transcendental curve provided with a disappearing curvature in its course.
Claim 3
Dependent Claim
49 words
Apparatus according to claim 1, in which said unstable diverging diffusor is divided into a plurality of axially successive zones of increasing diameter in the direction of flow, the profile of a preselected zone including a reversing circle which induces the instability of the medium or the turbulent flow.
Claim 4
Dependent Claim
39 words
Apparatus according to claim 1, in which said stable diffusor is divided into a plurality of axially successive zones of continuously increasing diameter in the direction of flow, for producing the stability of the medium or the laminar flow.
Claim 5
Dependent Claim
33 words
Apparatus according to claim 1, in which the converging diffusor having a decreasing diameter in the direction of flow is provided with a longitudinal groove for producing the rolling-off of the boundary layer.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 1, in which said cylinder is provided with a roughened internal surface in the zone of said unstable diverging diffusor and said axially symmetrical rotor portion forming an extension thereof.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 1, in which said cylinder is provided with a plurality of axially successive annular chambers arranged for circulation of fluid for the temperature control of the medium supplied to the cylinder.
Claim 8
Dependent Claim
93 words
Apparatus according to claim 6, in which one of said annular chambers substantially extends over the axial length of said logarithmic spiral, another of said annular chambers extends over the axial length of said unstable diverging diffusor, a third annular chamber substantially extends over the axial length of said axially symmetric rotor portion following said unstable diffusor, a fourth chamber substantially extends over the length of said stable diverging diffusor and said axially symmetrical rotor portion following the stable diffusor, and a fifth annular chamber extends over the length of said converging diffusor.
Claim 9
Dependent Claim
33 words
Apparatus according to claim 1, in which the internal surface of said cylinder is provided with a quartz glass sleeve, substantially extending over the length of said logarithmic spiral formed on the rotor.
Claim 10
Dependent Claim
123 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said cylinder being provided with an additional converging diffusor formed by a length of the cylinder of gradually increasing internal diameter in the direction of flow, said additional diffusor being situated in the zone of said converging diffusor formed by the rotor.
Claim 11
Dependent Claim
123 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said cylinder being provided with an additional converging diffusor formed by a length of the cylinder of gradually increasing internal diameter in the direction of flow, said additional diffusor being situated in the zone of said converging diffusor formed by the rotor.
Claim 12
Dependent Claim
107 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said cylinder being provided with a terminal and the rotor with a sliding contact, said terminal and sliDing contact being connected with a high frequency generator.
Claim 13
Dependent Claim
107 words
Apparatus for transforming and mixing deformable media, comprising a cylinder, a rotor mounted for rotation within said cylinder, said rotor including in the direction of flow, (a) an unstable diverging diffusor, (b) an axially symmetrical rotor portion forming an extension of said unstable diffusor, (c) a stable diverging diffusor following said axially symmetrical rotor portion, (d) a second axially symmetrical rotor portion forming an extension of said stable diffusor, and (e) a converging diffusor following said second axially symmetrical rotor portion, said cylinder being provided with a terminal and the rotor with a sliding contact, said terminal and sliDing contact being connected with a high frequency generator.
Claim 14
Dependent Claim
160 words
An extruder for transforming and mixing of plastics material on the basis of laminar-turbulent and turbulent-laminar transition of the flow of material and of the transition of the thermal quasi-turbulent energy exchange into turbulent energy dissipation, comprising a cylinder, a rotor rotatably mounted in the cylinder, said rotor comprising a first flow cone having a diverging profile in the direction of flow of the material for producing flow disturbances, said flow cone being extended by an axially symmetrical shaft portion followed by a second flow cone having a diverging profile in the direction of flow of the material for stabilization of the flow, said second flow cone being extended by a further axially symmetrical shaft portion of greater axial length than said first and second flow cone, and a truncated circular flow cone having a convergent tapering profile in the direction of flow and forming the rotor end portion of greater axial length than said first and second flow cone.
Claim 15
Dependent Claim
160 words
An extruder for transforming and mixing of plastics material on the basis of laminar-turbulent and turbulent-laminar transition of the flow of material and of the transition of the thermal quasi-turbulent energy exchange into turbulent energy dissipation, comprising a cylinder, a rotor rotatably mounted in the cylinder, said rotor comprising a first flow cone having a diverging profile in the direction of flow of the material for producing flow disturbances, said flow cone being extended by an axially symmetrical shaft portion followed by a second flow cone having a diverging profile in the direction of flow of the material for stabilization of the flow, said second flow cone being extended by a further axially symmetrical shaft portion of greater axial length than said first and second flow cone, and a truncated circular flow cone having a convergent tapering profile in the direction of flow and forming the rotor end portion of greater axial length than said first and second flow cone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |