US4392808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinneret orifice cross-sections
Assignee: Eastman Chemical Co
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Filing: 1982-06-21
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Granted: 1983-07-12
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Expires: 2002-06-21
Abstract
Abstract Spinneret orifices the planar cross-section of which defines an elongated slot having a plurality of wing member bar slots intersecting with the elongated slot at spaced intervals along the axial length thereof, and multiple intersecting body section bar slots intersecting with the elongated slot and intersecting with each of the other multiple intersecting body section bar slots at the elongated slot.
Inventors
- 👤 Bobby M. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:08
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
67 words
A spinneret defining at least one spinneret orifice the planar cross-section of which defines an elongated slot having a plurality of wing member bar slots intersecting with said elongated slot at spaced intervals along the axial length thereof; and multiple intersecting body section bar slots intersecting with said elongated slot and intersecting with each of the other multiple intersecting body section bar slots at said elongated slot.
Claim 2
Dependent Claim
67 words
A spinneret defining at least one spinneret orifice the planar cross-section of which defines an elongated slot having a plurality of wing member bar slots intersecting with said elongated slot at spaced intervals along the axial length thereof; and multiple intersecting body section bar slots intersecting with said elongated slot and intersecting with each of the other multiple intersecting body section bar slots at said elongated slot.
Claim 3
Dependent Claim
39 words
A spinneret as defined in claim 1 wherein a wing member bar slot on one side of the elongated slot is in straight line alignment with a wing member bar slot on the other side of the elongated slot.
Claim 4
Dependent Claim
35 words
A spinneret as defined in claim 1 wherein a wing member bar slot intersects with the elongated slot and one of the two angles at the intersection may vary from about 30° to about 120°.
Claim 5
Dependent Claim
43 words
A spinneret as defined in claim 1 wherein said wing member bar slots intersecting with one side of the elongated slot are spaced at offset intervals with respect to the wing member bar slots intersecting with the other side of the elongated slot.
Claim 6
Dependent Claim
35 words
A spinneret as defined in claim 4 wherein the number of said spaced offset wing member bar slots varies from two to six on any one side of said multiple intersecting body section bar slots.
Claim 7
Dependent Claim
48 words
A spinneret as defined in claim 1 wherein said wing member bar slots intersecting with one side of the elongated slot have their intersections at the same respective locations as the intersections of the wing member bar slots intersecting with the elongated slot on the other side thereof.
Claim 8
Dependent Claim
41 words
A spinneret as defined in claim 6 wherein the number of said wing member bar slots having their intersections at said same respective locations varies from four to twelve on any one side of said multiple intersecting body section bar slots.
Claim 9
Dependent Claim
125 words
A spinneret as defined in claim 4 and as exemplified in FIG. 5, wherein the number of wing member bar slots, N 1 , on any one side of said multiple intersecting body section bar slots is 2 to 6, and the number of multiple intersecting body section bar slots, N 2 , is 2 to 8, and W=0.050 to 0.110 mm. X 1 =W to 3W X 2 =2W to 4W X 3 =W to 1.5W X 4 =1.5W to 3W X 5 =3.5W to 7.5W X 6 =3W to 7W X 7 =W to 1.5W X 8 =W to 2.5W X 9 =W to 2.5W X 10 =4W to 7W X 11 =2[W/2+X 1 +X 3 +(N 1 -1)X 2 +X 5 ].
Claim 10
Dependent Claim
124 words
A spinneret as defined in claim 6 and as exemplified in FIG. 1 wherein the number of wing member slots, N 1 , on any one side of said multiple intersecting body section bar slots is 4 to 12, and the number of multiple intersecting body section bar slots N 2 , is 2 to 8, and W=0.050 to 0.110 mm. X 1 =W to 3W X 2 =2W to 4W X 3 =W to 1.5W X 4 =1.5W to 3W X 5 =3.5W to 7.5W X 6 =3W to 7W X 7 =W to 1.5W X 8 =W to 2.5W X 9 =W to 2.5W X 10 =4W to 7W X 11 =2[W/2+X 1 +X 3 +(N 1 -1)X 2 +X 5 ].
Claim 11
Dependent Claim
39 words
A spinneret as defined in claim 1 wherein a body section bar slot on one side of the elongated slot is in straight line alignment with a body section bar slot on the other side of the elongated slot.
Claim 12
Dependent Claim
35 words
A spinneret as defined in claim 1 wherein a body section bar slot intersects with the elongated slot and one of the two angles at the intersection may vary from about 30° to about 120°.
Claim 13
Dependent Claim
27 words
A spinneret as defined in claim 1 wherein said multiple intersecting body section bar slots intersect at the center of the axial length of said elongated slot.
Claim 14
Dependent Claim
34 words
A spinneret as defined in claim 1 wherein said multiple intersecting body section bar slots intersect said elongated slot at a location spaced from the center of the axial length of said elongated slot.
Claim 15
Dependent Claim
27 words
A spinneret as defined in claim 1 wherein said multiple intersecting body section bar slots each have a greater length than said spaced wing member bar slots.
Claim 16
Dependent Claim
22 words
A spinneret as defined in claim 1 wherein the number of multiple intersecting body section bar slots varies from two to eight.
Claim 17
Dependent Claim
13 words
A spinneret as defined in claim 1 wherein said elongated slot is nonstraight.
Claim 18
Dependent Claim
13 words
A spinneret as defined in claim 16 wherein said elongated slot is curved.
Claim 19
Dependent Claim
51 words
A spinneret as defined in claim 16 wherein the length of said elongated slot on one side of said multiple intersecting body section bar slots forms an angle of less than 180° with the length of said elongated slot on the other side of said multiple intersecting body section bar slots.
Claim 20
Dependent Claim
42 words
A spinneret as defined in claim 18 wherein a portion of said length of said elongated slot on said one side forms an angle of less than 180° with the adjacent remaining portion of said elongated slot length on said one side.
Claim 21
Dependent Claim
21 words
A spinneret as defined in claim 1 wherein one or more of the body section bar slots is or are nonstraight.
Claim 22
Dependent Claim
21 words
A spinneret as defined in claim 15 where one or more of the body section bar slots is or are curved.
Claim 23
Dependent Claim
41 words
A spinneret as defined in claim 20 wherein a portion of the length of at least one body section bar slot forms an angle with the remaining portion of said at least one body section bar slot of less than 180°.
Claim 24
Dependent Claim
28 words
A spinneret as defined in claim 1 wherein the extremities of said wing member bar slots and of said multiple intersecting body section bar slots define circular bores.
Claim 25
Dependent Claim
31 words
A spinneret as defined in claim 23 wherein the circular bores of said body section bar slots are of greater diameter than the circular bores of said wing member bar slots.
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) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |