US3824050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for spinning synthetic-resin filaments
Assignee: Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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Filing: 1972-03-16
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Granted: 1974-07-16
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Expires: 1992-03-16
Abstract
Abstract An apparatus for spinning synthetic-resin filaments has a distributing head formed with a conical passage into the apex of which a synthetic-resin melt is forced from a worm-type extruder machine. A manifold below the distributing head has a plurality of passages equispaced around the annular mouth constituting the base of the conical passage and each provided with a spinneret or nozzle having a plurality of filament-forming orifices. A stream of cooling air is directed along filaments in their direction of travel away from the spinnerets by an annular air guide surrounding each spinneret or surrounding all the spinnerets.
Inventors
- 👤 H Balk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
191 words
An apparatus for spinning filamenTs from a pressurized and melted synthetic-resin, said apparatus comprising: a distributing head formed with an inlet for receiving said resin and an outlet of annular configuration; a manifold secured to said head over said annular outlet and having a plurality of passages spaced around said annular outlet each having one end communicating with said outlet and another end turned away from said head; a plurality of spinnerets each having a plurality of orifices and each arranged at said other end of a respective one of said passages, whereby the melted resin passes through said head and through said manifold and out of said orifices as a plurality of converging jets; and an inner conical guide core surrounding at least some of said orifices and converging in the direction of convergence of said jets; an outer conical guide sleeve coaxially surrounding said guide core and defining an annular gap therewith opening in said direction; and means for feeding cooling gas to said gap and into heat exchanging relationship with the strands formed by the jets of the orifices surrounded by said core for hardening same into filaments.
Claim 2
Independent Claim
191 words
An apparatus for spinning filamenTs from a pressurized and melted synthetic-resin, said apparatus comprising: a distributing head formed with an inlet for receiving said resin and an outlet of annular configuration; a manifold secured to said head over said annular outlet and having a plurality of passages spaced around said annular outlet each having one end communicating with said outlet and another end turned away from said head; a plurality of spinnerets each having a plurality of orifices and each arranged at said other end of a respective one of said passages, whereby the melted resin passes through said head and through said manifold and out of said orifices as a plurality of converging jets; and an inner conical guide core surrounding at least some of said orifices and converging in the direction of convergence of said jets; an outer conical guide sleeve coaxially surrounding said guide core and defining an annular gap therewith opening in said direction; and means for feeding cooling gas to said gap and into heat exchanging relationship with the strands formed by the jets of the orifices surrounded by said core for hardening same into filaments.
Claim 3
Dependent Claim
16 words
The apparatus defined in claim 1 wherein said conical guide core surrounds all of said orifices.
Claim 4
Dependent Claim
29 words
The apparatus defined in claim 1 wherein a respective such core surrounds the orifices of each of said spinnerets and is, in turn, surrounded by a respective guide sleeve.
Claim 5
Dependent Claim
28 words
The apparatus defined in claim 1, further comprising a cone surrounded by said spinnerets, said spinnerets being disposed in an annulus between said guide core and said cone.
References Cited (Backward Citations)
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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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |