Patent US3648451A successfully refreshed from Google Patents.
US3648451A
Expired / Lapsed
US
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Novel yarn and process
Assignee: Monsanto Co
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Filing: 1970-02-16
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Granted: 1972-03-14
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Expires: 1990-02-16
Abstract
Abstract A fluid vortex spinning process for yarn in which a dispersion of high-modulus refractory fibers and lower modulus fibers in a viscous carrier liquid as a flowing stream is rotated about its axis to produce a composite staple fiber yarn of axially aligned high-modulus refractory fibers intermixed with and intertwined by lower modulus fibers and the composite yarns so produced.
Inventors
- 👤 Myrne R Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:09
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D01; D01H; D01H4/00; D01H4/30; D01H4/34; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2101/10; D10B2101/14; D10B2101/16
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
27 words
The process of fluid vortex spinning of claim 1 wherein the high modulus refractory fibers have a staple length of from one-fourth inch to about 1.5 inches.
Claim 2
Dependent Claim
17 words
The process of fluid vortex spinning of claim 1 wherein the high modulus refractory fibers are glass.
Claim 3
Dependent Claim
18 words
The process of fluid vortex spinning of claim 1 wherein the high modulus refractory fibers are whisker fibers.
Claim 4
Dependent Claim
20 words
The process of fluid vortex spinning of claim 1 wherein the high modulus refractory fibers are silicon carbide whisker fibers.
Claim 5
Dependent Claim
26 words
The process of fluid vortex spinning of claim 1 wherein the lower modulus fibers have a staple length of from three-eighths inch to about 1.5 inches.
Claim 6
Dependent Claim
21 words
The process of fluid vortex spinning of claim 1 wherein the lower modulus fibers are synthetic cellulosic or polymeric staple fibers.
Claim 7
Dependent Claim
18 words
The process of fluid vortex spinning of claim 1 wherein the lower modulus fibers are acrylic staple fibers.
Claim 8
Dependent Claim
18 words
The process of fluid vortex spinning of claim 1 wherein the lower modulus fibers are cellulosic staple fibers.
Claim 9
Dependent Claim
16 words
The process of fluid vortex spinning of claim 1 wherein the carrier liquid is corn syrup.
Claim 10
Dependent Claim
33 words
A composite staple fiber yarn of high modulus refractory fibers and lower modulus fibers, which yarn comprises axially aligned high modulus refractory staple fibers intermixed with and intertwined by lower modulus staple fibers.
Claim 11
Dependent Claim
27 words
The composite staple fiber yarn of claim 11 wherein the high modulus refractory fibers have a staple length of from about one-fourth inch to about 1.5 inches.
Claim 12
Dependent Claim
17 words
The composite staple fiber yarn of claim 11 wherein the high modulus refractory fibers are whisker fibers.
Claim 13
Dependent Claim
16 words
The composite staple fiber yarn of claim 11 wherein the high modulus refractory fibers are glass.
Claim 14
Dependent Claim
19 words
The composite staple fiber yarn of claim 11 wherein the high modulus refractory fibers are silicon carbide whisker fibers.
Claim 15
Dependent Claim
25 words
The composite staple fiber yarn of claim 11 wherein the lower modulus fibers have a staple length of from three-eighths inch to about 1.5 inches.
Claim 16
Dependent Claim
19 words
The composite staple fiber yarn of claim 11 wherein the lower modulus fibers are synthetic cellulosic or polymeric fibers.
Claim 17
Dependent Claim
16 words
The composite staple fiber yarns of claim 11 wherein the lower modulus fibers are cellulosic fibers.
Claim 18
Dependent Claim
16 words
The composite staple fiber yarn of claim 11 wherein the lower modulus fibers are acrylic fibers.
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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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |