US5395684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulation materials
Assignee: FOTHERGILL ENGINEERED FABRICS Ltd
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Filing: 1992-01-22
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Granted: 1995-03-07
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Expires: 2012-01-22
Abstract
Abstract A thermal insulating material comprising a double-faced knitted glass fibre fabric in which the faces (16, 17) of the fabric are interconnected by at least one linking thread (18) which passes from one face (16) to the other (17).
Inventors
- 👤 Frank Robinson
- 👤 Patricia A. Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:21
CPC Classifications
D; D04; D04B; D04B1/00; D04B1/14; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2403/00; D10B2403/01; D10B2403/011; D10B2403/0112; D10B2403/02; D10B2403/021; D10B2505/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24025; Y10T442/00; Y10T442/40; Y10T442/45
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
40 words
A flexible thermal insulating fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other.
Claim 2
Dependent Claim
40 words
A flexible thermal insulating fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other.
Claim 3
Dependent Claim
23 words
A flexible thermal insulation fabric according to claim 1, wherein the fabric is formed by knitting on a double needle bed knitting machine.
Claim 4
Dependent Claim
27 words
A flexible thermal insulation fabric according to claim 2, wherein the yarn comprises a plurality of strands of glass fibres each of which is about 1700 decitex.
Claim 5
Dependent Claim
30 words
A flexible thermal insulation fabric according to claim 1, having a thermal conductivity, measured in a direction normal to both faces, of the order of 0.10 to 0.20 w/m° k.
Claim 6
Dependent Claim
22 words
A flexible thermal insulation fabric according to claim 4, wherein the thermal conductivity is in the range of 0.10 to 0.125 w/m°k.
Claim 7
Dependent Claim
19 words
A flexible thermal insulation fabric according to claim 1, wherein both faces are knitted on the same gauge needles.
Claim 8
Dependent Claim
22 words
A flexible thermal insulation fabric according to claim 1, wherein one face is knitted on larger gauge needles than the other face.
Claim 9
Dependent Claim
54 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, the yarn comprising tuck stitches which pass from one face to the other face.
Claim 10
Dependent Claim
54 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, the yarn comprising tuck stitches which pass from one face to the other face.
Claim 11
Dependent Claim
51 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, wherein at least some of the glass-fibre is converted to silica.
Claim 12
Dependent Claim
51 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, wherein at least some of the glass-fibre is converted to silica.
Claim 13
Dependent Claim
53 words
A flexible thermal insulation fabric comprising a first fabric according to claim 9 joined to a second fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other.
Claim 14
Dependent Claim
67 words
A flexible thermal insulation fabric comprising a core fabric made of flexible thermal insulating fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-texture glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, and a fabric constructed in accordance to claim 9 joined to the faces of the core fabric.
Claim 15
Dependent Claim
28 words
A flexible thermal insulation fabric according to claim 9, wherein a finish comprising a vinylacetate ethylene copolymer latex is applied to one or more surfaces of the fabric.
Claim 16
Dependent Claim
57 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, and wherein at least one of the faces of the fabric is coated with a refractory material.
Claim 17
Dependent Claim
57 words
A flexible thermal insulation fabric comprising a double-faced weft knitted structure formed by knitting yarn which comprises strands of air-textured glass fibre to produce two spaced knitted faces interlinked by yarn which passes from one knitted face to the other, and wherein at least one of the faces of the fabric is coated with a refractory material.
Claim 18
Independent Claim
61 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other.
Claim 19
Independent Claim
61 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other.
Claim 20
Dependent Claim
20 words
A method according to claim 14, wherein both faces of the fabric are knitted on needles of the same gauge.
Claim 21
Dependent Claim
33 words
A method according to claim 14, wherein a first face of the fabric is knitted on needles of a larger gauge than that of the needles on which the other face is knitted.
Claim 22
Dependent Claim
27 words
A method according to claim 16, wherein the needles of one bed are of 5 gauge and the needles of the other bed are of 2.5 gauge.
Claim 23
Dependent Claim
26 words
A method according to claim 14, wherein the fabric is knitted using yarn which comprises a plurality of strands each of which is approximately 1700 decitex.
Claim 24
Independent Claim
83 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein the or each linking yarn is formed by tuck stitches which pass from one face of the fabric to the other.
Claim 25
Independent Claim
83 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein the or each linking yarn is formed by tuck stitches which pass from one face of the fabric to the other.
Claim 26
Dependent Claim
30 words
A method according to claim 19, wherein the tuck stitches are formed by wrapping glass fibre threads around selected needles of one bed and selected needles of the second bed.
Claim 27
Independent Claim
86 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein the glass fibre fabric is leached by contacting the fabric with hydrochloric acid to convert at least some of the glass fibre to silica.
Claim 28
Independent Claim
86 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein the glass fibre fabric is leached by contacting the fabric with hydrochloric acid to convert at least some of the glass fibre to silica.
Claim 29
Dependent Claim
33 words
A method according to claim 21, wherein a finish is applied to the fabric by contacting the fabric with solution comprising 50% by weight vinylacetate ethylene copolymer latex and an aqueous silicone elastomer.
Claim 30
Independent Claim
102 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein a first face of the fabric is knitted on needles of one bed which are of larger gauge than the needles of the other bed, using a yarn which is thicker than the yarn used for knitting the second face.
Claim 31
Independent Claim
102 words
A method of making a flexible thermal insulation fabric comprising the steps of weft knitting a double faced glass fibre fabric using yarn which comprises strands of air-textured glass fibre on a double needle bed weft knitting machine and interconnecting the faces of the fabric with at least one linking yarn which passes from one spaced knitted face to the other, wherein a first face of the fabric is knitted on needles of one bed which are of larger gauge than the needles of the other bed, using a yarn which is thicker than the yarn used for knitting the second face.
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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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |