Patent US4437827A successfully refreshed from Google Patents.
US4437827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning manifold with serial nozzle blocks
Assignee: LL Plant Engineering AG
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Filing: 1982-03-29
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Granted: 1984-03-20
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Expires: 2002-03-29
Abstract
Abstract A spinning manifold for melt-spinning synthetic high polymers is disclosed. The manifold has an elongated hollow body with cavities for the conduction of a heating medium, such as diphenyl, and a vertical nozzle shaft having heatable members placed between serially arranged and dismountable nozzle blocks such that the side walls of the heatable members are in heat exchange with adjacent nozzle blocks. These heatable members are displaceably mounted within the nozzle shaft. The pump shaft of the spinning manifold may also have additional heatable members placed between the pumping units. The same heating medium that flows through the cavities of the spinning manifold is placed within the heatable members.
Inventors
- 👤 Helmut Moderlak
- 👤 Gunter Koschinek
- 👤 Rolf Zinsser
- 👤 Richard Prehler
- 👤 Bernd Kretschmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:20
CPC Classifications
D; D01; D01D; D01D4/00; B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/86; B29C48/865; B29C48/03; B29C48/05
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A spinning manifold for melt-spinning synthetic high molecular weight polymers comprising, an elongated hollow member for the conduction of a heating medium and at least one vertical nozzle shaft having heatable walls, said nozzle shaft having a plurality of serially arranged separately dismountable nozzle blocks and at least one separately dismountable heatable member, said at least one heatable member extending the width of said nozzle shaft, said at least one heatable member and said nozzle blocks being arranged in an alternating configuration with respect to each other such that at least one of said at least one heatable member is located between and in heat exchange with each juxtaposed pair of said nozzle blocks.
Claim 2
Dependent Claim
114 words
A spinning manifold for melt-spinning synthetic high molecular weight polymers comprising, an elongated hollow member for the conduction of a heating medium and at least one vertical nozzle shaft having heatable walls, said nozzle shaft having a plurality of serially arranged separately dismountable nozzle blocks and at least one separately dismountable heatable member, said at least one heatable member extending the width of said nozzle shaft, said at least one heatable member and said nozzle blocks being arranged in an alternating configuration with respect to each other such that at least one of said at least one heatable member is located between and in heat exchange with each juxtaposed pair of said nozzle blocks.
Claim 3
Dependent Claim
22 words
A spinning manifold according to claim 1, wherein said heatable member extends at least to the bottom end of said nozzle blocks.
Claim 4
Dependent Claim
16 words
A spinning manifold according to claim 1, wherein said heatable member comprises a substantially parallelipipedic chamber.
Claim 5
Dependent Claim
78 words
A spinning manifold according to claim 1 wherein said nozzle shaft is connected laterally to a pump shaft, said pump shaft extending substantially throughout the length of the nozzle shaft and accommodating a plurality of pumping units and spinning pumps, said pump shaft having additional heatable members for the conduction of said heating medium, said additional heatable members being located between juxtaposed pumping units such that said additional heatable members are in heat exchange with adjacent pumping units.
Claim 6
Dependent Claim
29 words
A spinning manifold according to claim 4, wherein said parallelipipedic chamber has a plurality of lugs at its upper ends to support said parallelipipedic chamber on said nozzle shaft.
Claim 7
Dependent Claim
25 words
A spinning manifold according to claim 4, wherein said parallelipipedic chamber is connected to a heating medium duct by a quick release threaded pipe coupling.
Claim 8
Dependent Claim
22 words
A spinning manifold according to claim 1, wherein said nozzle shaft is partially covered in the downward direction by a protective plate.
References Cited (Backward Citations)
US2841821A
Cited
US3562858A
Cited
US3655314A
Cited
US3948592A
Cited
US4035127A
Cited
US4099898A
Cited
SU690087A1
Cited
US4225299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |