Patent US3959078A successfully refreshed from Google Patents.
US3800985A
Expired / Lapsed
US
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System and method for distributing highly viscous molten material
Assignee: National Oilwell Varco LP
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Filing: 1971-04-15
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Granted: 1974-04-02
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Expires: 1991-04-15
Abstract
Abstract A system for distributing a highly viscous molten material such as a molten polymer. The system includes means for heating the material to a molten state and moving it through a special mixing structure located just ahead of one or more output ports leading to a further processing system including a filament spinnerette. The mixing structure includes a conduit containing a plurality of sheet-like elements extending longitudinally within the conduit, each element being curved to turn the direction of the material flowing past it. The elements are arranged in alternating right and left-handed curvature groups (a group consisting of one or more elements). The conduit is in contact with a heat exchange medium to maintain the polymer at its proper molten temperature. A modification for distributing molten glass is also disclosed as being substantially the same as for the molten polymer.
Inventors
- 👤 K Grout
- 👤 R Devellian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; B; B01; B01J; B01J4/00; B01J4/001; B29; B29B; B29B13/00; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/362; B29C48/50; B29C48/695; B29C48/70; B29C48/705; C; C03; C03B; C03B7/00; C03B7/14; F; F15; F15D; F15D1/00; F15D1/02; F15D1/04; Y; Y10; Y10S; Y10S425/00; Y10S425/049
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
189 words
A system for distributing highly viscous molten material whose viscosity is temperature sensitive comprising: a. an extruder including means for heating a flow of such material to a molten highly viscous state, outlet means, and means for extruding said material from said outlet means; b. a cylindrical conduit interconnecting said outlet means to a distribution outlet for distributing said material to a further processing means; c. said conduit containing within it, ahead of said distribution outlet, a plurality of curved sheet-like elements extending longitudinally of said conduit and each having a curvature to turn the direction of said material flowing through said conduit, said elements being arranged in alternating right and left-handed curvature groups with leading and trailing edges of adjacent elements in adjacent groups being disposed at a substantial Angle to each other; d. the walls of said conduit being in heat transfer relationship with the material flowing through said conduit; and e. an additional conduit and distribution outlet connected in series to said first mentioned distribution outlet, said additional conduit and distribution outlet each being constructed as set forth for said first mentioned conduit and distribution outlet.
Claim 2
Independent Claim
189 words
A system for distributing highly viscous molten material whose viscosity is temperature sensitive comprising: a. an extruder including means for heating a flow of such material to a molten highly viscous state, outlet means, and means for extruding said material from said outlet means; b. a cylindrical conduit interconnecting said outlet means to a distribution outlet for distributing said material to a further processing means; c. said conduit containing within it, ahead of said distribution outlet, a plurality of curved sheet-like elements extending longitudinally of said conduit and each having a curvature to turn the direction of said material flowing through said conduit, said elements being arranged in alternating right and left-handed curvature groups with leading and trailing edges of adjacent elements in adjacent groups being disposed at a substantial Angle to each other; d. the walls of said conduit being in heat transfer relationship with the material flowing through said conduit; and e. an additional conduit and distribution outlet connected in series to said first mentioned distribution outlet, said additional conduit and distribution outlet each being constructed as set forth for said first mentioned conduit and distribution outlet.
Claim 3
Independent Claim
188 words
A system for distributing highly viscous molten material whose viscosity is temperature sensitive comprising: a. an extruder including means for heating a flow of such material to a molten highly viscous state, outlet means, and means for extruding said material from said outlet means; b. a cylindrical conduit interconnecting said outlet means to a distribution outlet for distributing said material to a further processing means; c. said conduit containing within it, ahead of said distribution outlet, a plurality of curved sheet-like elements extending longitudinaly of said conduit and each having a curvature to turn the direction of said material flowing through said conduit, said elements being arranged in alternating right and left-handed curvature groups with leading and trailing edges of adjacent elements in adjacent groups being disposed at a substantial angle to each other; d. the walls of said conduit being in heat transfer relationship with the material flowing through said conduit; and e. additional conduits and distribution outlets connected in series to said first mentioned distribution outlet, said additional conduits and distribution outlets each being constructed as set forth for said first mentioned conduit and distribution outlet.
Claim 4
Independent Claim
188 words
A system for distributing highly viscous molten material whose viscosity is temperature sensitive comprising: a. an extruder including means for heating a flow of such material to a molten highly viscous state, outlet means, and means for extruding said material from said outlet means; b. a cylindrical conduit interconnecting said outlet means to a distribution outlet for distributing said material to a further processing means; c. said conduit containing within it, ahead of said distribution outlet, a plurality of curved sheet-like elements extending longitudinaly of said conduit and each having a curvature to turn the direction of said material flowing through said conduit, said elements being arranged in alternating right and left-handed curvature groups with leading and trailing edges of adjacent elements in adjacent groups being disposed at a substantial angle to each other; d. the walls of said conduit being in heat transfer relationship with the material flowing through said conduit; and e. additional conduits and distribution outlets connected in series to said first mentioned distribution outlet, said additional conduits and distribution outlets each being constructed as set forth for said first mentioned conduit and distribution outlet.
Claim 5
Dependent Claim
29 words
A system as in claim 2 in which said material is a molten polymer and in which the last of said distribution outlets is connected to a filament spinnerette.
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |