US4179259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinneret for the production of wool-like man-made filament
Assignee: Individual
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Filing: 1977-09-20
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Granted: 1979-12-18
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Expires: 1997-09-20
Abstract
Abstract The present invention relates to production of wool-like chemical filaments and, more particularly, to a spinneret for obtaining these filaments. The present invention is most effectively realized in the production from these filaments of household and industrial textiles. This spinneret includes a filament-forming hole made as a slot with a configuration of an open polygon, having a rectilinear portion adjoining one of the sides thereof and one more element shaped as a rectilinear section adjoining this portion at a right angle thereto. Such a structure of the spinneret permits production of a wool-like filament possessing all properties inherent in natural wool, namely, low heat conductivity, permanent crimp, and high hygienic properties.
Inventors
- 👤 Mikhail N. Belitsin
- 👤 Sergei A. Kudryashov
- 👤 Alexandr G. Borik
- 👤 Valentin V. Kulikov
- 👤 Natalia A. Sadkova
- 👤 Galina A. Kudryashova
- 👤 Leonid F. Vorontsov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:06
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A spinneret for obtaining a chemical filament having a cross-section defining a first ring shaped portion and a second rectilinearly shaped portion integral therewith, comprising: a dope spinning hole shaped as a slot, the configuration of the slot defining an open polygon comprising means for forming said first ring shaped portion of said filament; means defining a first rectilinear portion adjoining at least one of the sides of the polygon at a right angle thereto; means defining at least one more slot shaped as a rectilinear section intersecting said first rectilinear portion at a right angle thereto, whereby a cross-shaped slot is formed by the first rectilinear portion and the rectilinear section.
Claim 2
Dependent Claim
112 words
A spinneret for obtaining a chemical filament having a cross-section defining a first ring shaped portion and a second rectilinearly shaped portion integral therewith, comprising: a dope spinning hole shaped as a slot, the configuration of the slot defining an open polygon comprising means for forming said first ring shaped portion of said filament; means defining a first rectilinear portion adjoining at least one of the sides of the polygon at a right angle thereto; means defining at least one more slot shaped as a rectilinear section intersecting said first rectilinear portion at a right angle thereto, whereby a cross-shaped slot is formed by the first rectilinear portion and the rectilinear section.
Claim 3
Dependent Claim
137 words
A spinneret for obtaining a chemical filament having a cross-section defining a first ring shaped portion and a second rectilinearly shaped portion integral therewith, comprising: a dope spinning hole shaped as a slot, the configuration of the slot defining an open polygon comprising means for forming said first ring shaped portion of said filament; means defining a first rectilinear portion adjoining at least one of the sides of the polygon at a right angle thereto; means defining at least one more slot shaped as a rectilinear section intersecting said first rectilinear portion a right angle thereto, where by a cross-shape slot is formed by the first rectilinear portion and the rectilinear section; and means defining second and third rectilinear portions adjoining said rectilinear section at right angles thereto and as close as possible to the ends thereof.
Claim 4
Dependent Claim
137 words
A spinneret for obtaining a chemical filament having a cross-section defining a first ring shaped portion and a second rectilinearly shaped portion integral therewith, comprising: a dope spinning hole shaped as a slot, the configuration of the slot defining an open polygon comprising means for forming said first ring shaped portion of said filament; means defining a first rectilinear portion adjoining at least one of the sides of the polygon at a right angle thereto; means defining at least one more slot shaped as a rectilinear section intersecting said first rectilinear portion a right angle thereto, where by a cross-shape slot is formed by the first rectilinear portion and the rectilinear section; and means defining second and third rectilinear portions adjoining said rectilinear section at right angles thereto and as close as possible to the ends thereof.
Claim 5
Dependent Claim
37 words
A spinneret as claimed in claim 2, wherein said second and third rectilinear portions are directed aside from the polygon, thereby forming, together with the first rectilinear portion, a slot having the configuration of a three-pronged fork.
Claim 6
Dependent Claim
51 words
A spinneret as claimed in claim 3, wherein the slot shaped as a three-pronged fork adjoins, with the first rectilinear portion, one of the vertices of the open polygon, and further including means defining a fourth rectilinear portion emerging from this vertex at a right angle to said first rectilinear portion.
Claim 7
Dependent Claim
60 words
A spinneret as claimed in claim 4, wherein adjoining the fourth rectilinear portion at a right angle thereto is a fifth rectilinear portion, having means defining a free end and further including means defining a sixth rectilinear portion extending from said free end of said fifth rectilinear portion and directed towards the polygon, whereby an additional open polygon is formed.
Claim 8
Dependent Claim
44 words
A spinneret as claimed in claim 5, wherein a section of the first rectilinear portion, arranged intermediate of the rectilinear section and the fourth rectilinear portion is intersected at a right angle, at the substantial mid-portion thereby by means defining a seventh rectilinear portion.
Claim 9
Dependent Claim
61 words
A spinneret as claimed in claim 6, wherein the rectilinear section and the first, second and third rectilinear portions are mutually arranged so that they form a two-pronged for adjoining, with the first rectilinear portion, a vertex of the polygon, the first rectilinear portion being intersected at the substantial mid-portion thereof and at a right angle by the seventh rectilinear portion.
References Cited (Backward Citations)
SU286130A1
Cited
NL6709531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |