US4265972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated fibers and related process
Assignee: Individual
•
Filing: 1979-03-09
•
Granted: 1981-05-05
•
Expires: 1999-03-09
Abstract
Abstract A composite fiber or filament comprising a core or substrate coated with a cellular foam, and an outer circumference characterized by a substantially continuous, microcellular breathable and abrasion-resistant aspect.
Inventors
- 👤 Bernard Rudner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
A; A46; A46D; A46D1/00; A46D1/02; A46D1/023; D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/404; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973; Y10T428/2975; Y10T428/298
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
61 words
A composite fiber suitable for spinning, weaving or floccing comprising a core fiber and adhering thereto a sheath of a resin foam having a smooth continuous regular outer surface; and sheath comprising an inner zone adhering to said core fiber and an outer zone of increased density and smaller cell-size; the outer surface of which is gas permeable, smooth and regular.
Claim 2
Dependent Claim
61 words
A composite fiber suitable for spinning, weaving or floccing comprising a core fiber and adhering thereto a sheath of a resin foam having a smooth continuous regular outer surface; and sheath comprising an inner zone adhering to said core fiber and an outer zone of increased density and smaller cell-size; the outer surface of which is gas permeable, smooth and regular.
Claim 3
Dependent Claim
16 words
A composite fiber as claimed in claim 1 wherein said inner zone is macrocellular in construction.
Claim 4
Dependent Claim
14 words
A composite fiber as claimed in claim 1 wherein said outer zone is microcellular.
Claim 5
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is a flexible thermoplastic polymer.
Claim 6
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is a flexible glass fiber.
Claim 7
Dependent Claim
14 words
A composite fiber as claimed in claim 1 wherein said sheath is flexible polyurethane.
Claim 8
Dependent Claim
32 words
A composite fiber as claimed in claim 1 wherein both said inner zone and said outer zone comprise a flexible cellular thermosetting foam selected from a polyester urethane and a polyether urethane.
Claim 9
Dependent Claim
32 words
A composite fiber as claimed in claim 7 wherein said foam of said inner zone is resilient uncured and thermosettable and has a density of less than 30 pounds per cubic foot.
Claim 10
Dependent Claim
26 words
A composite fiber as claimed in claim 7 wherein said foam of said outer zone has a density of at least 30 pounds per cubic foot.
Claim 11
Dependent Claim
22 words
A composite fiber as claimed in claim 9 wherein the outer surface of said outer zone is smooth, regular, microporous and thermoset.
Claim 12
Dependent Claim
26 words
A composite fiber as claimed in claim 9 wherein said foam of said outer zone has a density of up to 80 pounds per cubic foot.
Claim 13
Dependent Claim
31 words
A composite fiber as claimed in claim 9 wherein said foam of said outer zone has a density of from 50 pounds per cubic foot to 70 pounds per cubic foot.
Claim 14
Dependent Claim
22 words
A composite fiber as claimed in claim 1 wherein said core fiber has a length to diameter ratio of at least 20,000.
Claim 15
Dependent Claim
30 words
A composite fiber as claimed in claim 1 wherein the thickness of said inner zone is from 10 percent to 500 percent that of the radius of said core fiber.
Claim 16
Dependent Claim
28 words
A composite fiber as claimed in claim 1 wherein the thickness of said outer zone is from about 0.01 percent to 100 percent that of said core fiber.
Claim 17
Dependent Claim
25 words
A composite fiber as claimed in claim 1 wherein the weight of said sheath is in excess of one half that of said core fiber.
Claim 18
Dependent Claim
21 words
A composite fiber as claimed in claim 16 wherein said sheath is composed of polychloroprene and said core fiber comprises polypropylene.
Claim 19
Dependent Claim
21 words
A composite fiber as claimed in claim 17 wherein said polychloroprene has a density of from 22 pounds per cubic foot.
Claim 20
Dependent Claim
25 words
A composite fiber as claimed in claim 1 wherein said sheath weighs from 1 percent to 50 percent of the weight of said core fiber.
Claim 21
Dependent Claim
24 words
A composite fiber as claimed in claim 1 wherein said sheath has a thickness of up to three times that of said core fiber.
Claim 22
Dependent Claim
29 words
A composite fiber as claimed in claim 1 wherein said outer zone has a cross-sectional area 10 percent to 15 percent that of the cross-sectional area of said sheath.
Claim 23
Dependent Claim
35 words
A composite fiber as claimed in claim 1 wherein the thickness of said sheath is from 0.5 mil to 0.25 inch and the thickness of said core fiber is from 0.5 mil to 0.25 inch.
Claim 24
Dependent Claim
25 words
A composite fiber as claimed in claim 22 wherein the thickness of the outer zone of said sheath is from 0.5 mil to 5 mils.
Claim 25
Dependent Claim
28 words
A composite fiber as claimed in claim 1 wherein the density of said inner zone is from 1.5 pounds per cubic foot to 30 pounds per cubic foot.
Claim 26
Dependent Claim
27 words
A composite fiber as claimed in claim 1 wherein said resin foam of said sheath is an open or partially open cellular, flexible, resilient and extensible foam.
Claim 27
Dependent Claim
26 words
A composite fiber as claimed in claim 1, wherein said core fiber is a flexible glass fiber and said sheath is composed of silicone rubber foam.
Claim 28
Dependent Claim
27 words
A composite fiber as claimed in claim 1 wherein said core fiber is a flexible glass fiber and the foam of said sheath is a polyester urethane.
Claim 29
Dependent Claim
27 words
A composite fiber as claimed in claim 1 wherein said core fiber is a flexible glass fiber and the foam of said sheath is a polyether urethane.
Claim 30
Dependent Claim
18 words
A composite fiber as claimed in claim 27 or claim 28 wherein said foam is a flexible foam.
Claim 31
Dependent Claim
18 words
A composite fiber as claimed in claim 27 or claim 28 wherein said foam is a semi-flexible foam.
Claim 32
Dependent Claim
27 words
A composite fiber as claimed in claim 1, wherein said core fiber is a glass fiber and said sheath is composed of a flexible thermosetting polyurethane foam.
Claim 33
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a polyamide.
Claim 34
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a polyester.
Claim 35
Dependent Claim
28 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a polyamide and said sheath is composed of a flexible thermosetting polyurethane foam.
Claim 36
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a polyolefin.
Claim 37
Dependent Claim
17 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a polycarbonate.
Claim 38
Dependent Claim
16 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of asbestos.
Claim 39
Dependent Claim
22 words
A composite fiber as claimed in claim 1 wherein said core fiber is composed of a flexible, extensible, synthetic organic, thermoplastic resin.
Claim 40
Dependent Claim
19 words
A composite fiber as claimed in claim 37 wherein the sheath surrounding said core fiber is a polyurethane foam.
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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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |