Patent US4897303A successfully refreshed from Google Patents.
US4897303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buoyant coated fibers
Assignee: Dow Chemical Co
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Filing: 1988-03-07
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Granted: 1990-01-30
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Expires: 2008-03-07
Abstract
Abstract A buoyant article which can be used for floatation and/or insulation comprising a coated batting, felt or non-woven web of resilient shape reforming elongatable non-linear carbonaceous fibers, said fibers having a reversible deflection ratio of greater than 1.2:1 and said coating comprising a water insoluble hydrophobic cured or set substance.
Inventors
- 👤 Francis P. McCullough, Jr.
- 👤 R. Vernon Snelgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
D; D06; D06M; D06M15/00; D01; D01F; D01F11/00; D01F11/10; D01F11/14; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10S428/913; Y10S428/92; Y10T; Y10T428/00; Y10T428/30; Y10T442/00; Y10T442/20; Y10T442/2008; Y10T442/2213
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
60 words
A buoyant low density open-celled fibrous structure which can be used for floatation and/or insulation comprising a coated batting, felt or non-woven web of resilient shape reforming elongatable non-linear carbonaceous fibers, said fibers having a reversible deflection ratio of greater than 1.2:1, and an aspect ratio greater than 10:1, said coating comprising a water insoluble hydrophobic cured or set substance.
Claim 2
Dependent Claim
60 words
A buoyant low density open-celled fibrous structure which can be used for floatation and/or insulation comprising a coated batting, felt or non-woven web of resilient shape reforming elongatable non-linear carbonaceous fibers, said fibers having a reversible deflection ratio of greater than 1.2:1, and an aspect ratio greater than 10:1, said coating comprising a water insoluble hydrophobic cured or set substance.
Claim 3
Dependent Claim
12 words
The structure of claim 1 wherein said fibers have a sinusoidal configuration.
Claim 4
Dependent Claim
42 words
The structure of claim 1 wherein said fibers have a resistance of greater than 10 7 ohms per inch when measured on a 6K tow formed from precursor fibers having a diameter of 7 to 20 microns and are non-electrically conductive fibers.
Claim 5
Dependent Claim
12 words
The structure of claim 3 wherein said fibers possess no anti-static characteristics.
Claim 6
Dependent Claim
40 words
The structure of claim 1 wherein said fibers have a resistance less than 10 4 ohms per inch when measures on a 6K tow formed from precursor fibers having a diameter of 7 to 20 microns and are electrically conductive.
Claim 7
Dependent Claim
34 words
The structure of claim 1 wherein said coating comprises a member selected from the group consisting of ionomer, thermoset resin, thermoplastic resin, haloaliphatic resin, silicone elastomer, silicone rubber, polysiloxane and high molecular weight wax.
Claim 8
Dependent Claim
12 words
The structure of claim 6 wherein said coating is a haloaliphatic resin.
Claim 9
Dependent Claim
11 words
The structure of claim 6 wherein said coating is an ionomer.
Claim 10
Dependent Claim
11 words
The structure of claim 6 wherein said coating is a polysiloxane.
Claim 11
Dependent Claim
9 words
The structure of claim 1 which is surface coated.
Claim 12
Dependent Claim
70 words
In an article of clothing for insulating a party against the weather and providing buoyancy, the improvement which comprises said article having insulation material comprising a coated open-celled batting, felt or non-woven web of resilient, shape reforming elongatable non-linear carbonaceous fibers, said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1, said coating comprising a water insoluble hydrophobic cured or set substance.
Claim 13
Dependent Claim
70 words
In an article of clothing for insulating a party against the weather and providing buoyancy, the improvement which comprises said article having insulation material comprising a coated open-celled batting, felt or non-woven web of resilient, shape reforming elongatable non-linear carbonaceous fibers, said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1, said coating comprising a water insoluble hydrophobic cured or set substance.
Claim 14
Dependent Claim
34 words
The article of claim 11 wherein said coating comprises a member selected from the group consisting of ionomer, thermoset resin, thermoplastic resin, haloaliphatic resin, silicone elastomer, silicone rubber, polysiloxane and high molecular weight wax.
Claim 15
Dependent Claim
12 words
The article of claim 11 wherein said insulation comprises coil-like carbonaceous fibers.
Claim 16
Dependent Claim
12 words
The article of claim 11 wherein said insulation comprises sinusoidal carbonaceous fibers.
Claim 17
Dependent Claim
19 words
In a jacket having insulation, the improvement which comprises said insulation being composed of the structure of claim 1.
Claim 18
Dependent Claim
21 words
In a sleeping bag or blanket having insulation, the improvement comprising said insulation being composed of the structure of claim 1.
Claim 19
Dependent Claim
11 words
An insulation for an aircraft comprising the structure of claim 1.
Claim 20
Dependent Claim
43 words
The structure of claim 1 wherein said fibers have a resistance of about 10 7 to 10 4 ohms per inch when measured on a 6K tow formed from precursor fibers having a diameter of 7 to 20 microns and possess anti-static characteristics.
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |