Patent US4844974A successfully refreshed from Google Patents.
US4844974A
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Antistatic, antislosh, flame arresting structure for use in containers holding flammable fluids
Assignee: Dow Chemical Co
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Filing: 1987-11-18
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Granted: 1989-07-04
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Expires: 2007-11-18
Abstract
Abstract An antislosh, flame arresting structure for use in or with containers holding flammable fluids comprising a multiplicity of heat set carbonaceous fibers having an LOI value greater than 40 in an amount effective for preventing sloshing of the fluids and capable of arresting a flame front.
Inventors
- 👤 Francis P. McCullough, Jr.
- 👤 R. Vernon Snelgrove
- 👤 Eckel R. Lane
- 👤 David M. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/02; C07C57/03; C07C57/04; C04; C04B; C04B14/00; C04B14/38; C04B14/386; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B65; B65D; B65D90/00; B65D90/22; B65D90/52; C04B30/00; C04B30/02; C07C47/00; C07C47/20; C07C47/21; C07C47/22; C04B2111/00; C04B2111/20; C04B2111/28; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/903; Y10S428/92; Y10T; Y10T428/00; Y10T428/30; Y10T442/00; Y10T442/10; Y10T442/184; Y10T442/191; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/624; Y10T442/696
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
39 words
A fibrous flame arresting structure for use in or with containers holding flammable fluids comprising a multiplicity of irreversibly heat set carbonaceous fibers having an LOI value greater than 40 in an amount effective for arresting a flame front.
Claim 2
Dependent Claim
39 words
A fibrous flame arresting structure for use in or with containers holding flammable fluids comprising a multiplicity of irreversibly heat set carbonaceous fibers having an LOI value greater than 40 in an amount effective for arresting a flame front.
Claim 3
Dependent Claim
35 words
The structure of claim 1 wherein said fibers have a resistance greater than 10 7 ohms per inch on a 6K tow formed from fibers having a diameter of 7-20 microns and are nonelectrically conductive.
Claim 4
Dependent Claim
33 words
The structure of claim 1 wherein said fibers have a resistance of about 10 7- 10 4 ohms per inch formed from fibers having a diameter of 7-20 microns and are electrically conductive.
Claim 5
Dependent Claim
35 words
The structure of claim 1 wherein said fibers have a resistance less than 10 4 ohms per inch on a 6K tow formed from fibers having a diameter of 7-20 microns and possess antistatic characteristics.
Claim 6
Dependent Claim
42 words
The structure of claim 1 wherein said fibers form an entangled web and said web is bonded with sufficient thermoplastic or thermoset material to produce a structural rigidity and stiffness to maintain an open web shape in the presence of a liquid.
Claim 7
Dependent Claim
16 words
The structure of claim 5 wherein said web permits a high rate of flow of liquid.
Claim 8
Dependent Claim
24 words
The structure of claim 5 wherein the web is fixed in its desired form and/or shape by bonding the juxtapositioned fibers one to another.
Claim 9
Dependent Claim
15 words
The structure of claim 1 comprising fibers having a carbon content of less than 85%.
Claim 10
Dependent Claim
11 words
The structure of claim 1 wherein said fibers contain a binder.
Claim 11
Dependent Claim
14 words
The structure of claim 1 wherein said fibers are derived from stabilized acrylic fibers.
Claim 12
Dependent Claim
14 words
The structure of claim 1 wherein said fibers are derived from stabilized pitch fibers.
Claim 13
Dependent Claim
21 words
The structure of claim 1 wherein said carbonaceous fiber content is 25% or greater and containing polyester as a binder fiber.
Claim 14
Dependent Claim
21 words
The structure of claim 1 wherein said carbonaceous fiber content is 25% or greater and containing cured epoxy as a binder.
Claim 15
Dependent Claim
51 words
An antislosh, flame arresting structure for use in or with containers holding flammable fluids comprising a multiplicity of heat set carbonaceous fibers having an LOI value greater than 40 in an amount effective for preventing sloshing of the fluids and capable of arresting a flame front, wherein said fibers are nonlinear.
Claim 16
Dependent Claim
51 words
An antislosh, flame arresting structure for use in or with containers holding flammable fluids comprising a multiplicity of heat set carbonaceous fibers having an LOI value greater than 40 in an amount effective for preventing sloshing of the fluids and capable of arresting a flame front, wherein said fibers are nonlinear.
Claim 17
Dependent Claim
35 words
The structure of claim 14 wherein said fibers have a resistance greater than 10 7 ohms per inch on a 6K tow formed from fibers having a diameter of 7-20 microns and are nonelectrically conductive.
Claim 18
Dependent Claim
33 words
The structure of claim 14 wherein said fibers have a resistance of about 10 7- 10 4 ohms per inch formed from fibers having a diameter of 7-20 microns and are electrically conductive.
Claim 19
Dependent Claim
35 words
The structure of claim 14 wherein said fibers have a resistance less than 10 4 ohms per inch on a 6K tow formed from fibers having a diameter of 7-20 microns and possess antistatic characteristics.
Claim 20
Dependent Claim
37 words
The structure of claim 14 comprising an entangled web of continuous or staple fibers having sufficient thermoplastic or thermoset content to produce a structural integrity to maintain an open web shape in the presence of a liquid.
Claim 21
Dependent Claim
48 words
The structure of claim 14 comprising an entangled web of continuous or staple fibers having sufficient thermoplastic or thermoset content to produce a structural integrity to maintain an open web shape in the presence of a liquid wherein the web permits a high rate of flow of liquid.
Claim 22
Dependent Claim
56 words
The structure of claim 14 comprising an entangled web of continuous or staple fibers having sufficient thermoplastic or thermoset content to produce a structural integrity to maintain an open web shape in the presence of a liquid wherein the web is fixed in its desired form and/or shape by bonding the juxtapositioned fibers one to another.
Claim 23
Dependent Claim
21 words
The structure of claim 14 wherein said carbonaceous fiber content is 25% or greater and containing cured epoxy as a binder.
Claim 24
Dependent Claim
21 words
The structure of claim 1 wherein said carbonaceous fiber content is 25% or greater and containing polyester as a binder fiber.
Claim 25
Dependent Claim
12 words
The structure of claim 14 wherein said fibers have a sinusoidal configuration.
Claim 26
Dependent Claim
13 words
The structure of claim 14 wherein said fibers have a coil like configuration.
Claim 27
Dependent Claim
24 words
The structure of claim 14 wherein said fibers having a reversible deflection ratio of greater than 1.2:1, and an aspect ratio greater than 10:1.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |