US4729920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable fabric
Assignee: Raychem Ltd
•
Filing: 1986-02-14
•
Granted: 1988-03-08
•
Expires: 2006-02-14
Abstract
Abstract Curable fabric comprising first and second curing reactants, at least one of which is in the form of a fabric member, and comprising heat-recoverable fabric members.
Inventors
- 👤 Robert H. McLoughlin
- 👤 Kenneth B. Pithouse
- 👤 David J. Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:36
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/007; B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0633; B29C61/0658; D04H1/00; D04H1/40; D04H1/54; D04H3/009; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T442/00; Y10T442/30; Y10T442/3049; Y10T442/3057
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
67 words
A fabric comprising dimensionally-recoverable fiber, filament, or yarn fabric members, which fabric carries first and second components of a heat curable composition which can be cured by reaction together of the first and second components when the fabric is heated to a curing temperature, at least the first component being in the form of fiber, filament, or yarn fabric members separate from the dimensionally recoverable fabric members.
Claim 2
Dependent Claim
67 words
A fabric comprising dimensionally-recoverable fiber, filament, or yarn fabric members, which fabric carries first and second components of a heat curable composition which can be cured by reaction together of the first and second components when the fabric is heated to a curing temperature, at least the first component being in the form of fiber, filament, or yarn fabric members separate from the dimensionally recoverable fabric members.
Claim 3
Dependent Claim
21 words
A fabric according to claim 1, wherein both of the first and second components are in the form of fabric members.
Claim 4
Dependent Claim
39 words
A fabric according to claim 1 or 2, wherein the curable component(s) in the form of fabric members is or are incorporated in the fabric with the recoverable fabric members, but are still separate from the recoverable fabric members.
Claim 5
Dependent Claim
65 words
A fabric according to claim 1, which comprises fabric members that will recover when heated to a recovery temperature thereof, wherein the recoverable members have a tensile strength of at least 0.1 MPa at their recovery temperature and have been stretched to an extent that will cause the fabric to recover by at least 10%, when heated to the recovery temperature of the recoverable members.
Claim 6
Dependent Claim
19 words
A fabric as claimed in claim 1, wherein the recoverable members have a recovery ratio of at least 2:1.
Claim 7
Dependent Claim
20 words
A fabric as claimed in claim 1, wherein the curable fabric members are oriented substantially perpendicularly to the dimensionally-recoverable members.
Claim 8
Dependent Claim
29 words
A fabric as claimed in claim 1, which is woven so that the weave density of recoverable members is greater than the weave density of curable component fabric members.
Claim 9
Dependent Claim
29 words
A fabric as claimed in claim 1, which is woven so that the weave density of recoverable members is less than the weave density of curable component fabric members.
Claim 10
Dependent Claim
25 words
A fabric according to claim 1, wherein at least some of the fabric members incorporate a strengthening filament of material other than the said components.
Claim 11
Dependent Claim
81 words
A fabric according to claim 1, wherein the curable composition comprises three curable components which are: (a) a thermoplastic polyamide having reactive amine groups; (b) a thermoplastic copolymer of an alkene with an ethylenically unsaturated ester of an alkanol and a carboxylic acid, the ester having up to 6 carbon atoms, and optionally one or more acidic comonomers; and (c) a thermoplastic epoxy resin, at least one of the components (a), (b) and (c) being in the form of fabric members.
Claim 12
Dependent Claim
47 words
A fabric according to claim 10, wherein components (a) and (b) are present in a ratio of from 35:65 to 75:25 by weight and component (c) is present in an amount of from 8 to 79 parts per hundred parts of components (a) and (b) by weight.
Claim 13
Dependent Claim
37 words
A fabric according to claim 10 or 11, wherein one all three curable components are in the form of fabric members incorporated in the fabric with the recoverable members, but are still separate from the recoverable members.
Claim 14
Dependent Claim
31 words
A fabric as claimed in claim 1, wherein one of the reactive components comprises an epoxy resin and the other reactive component comprises a thermoplastic polyamide resin having free amine groups.
Claim 15
Dependent Claim
26 words
A fabric as claimed in claim 1, wherein each of the reactive components has a fusion temperature in the range of from 70° to 120° C.
Claim 16
Dependent Claim
20 words
A dimensionally recoverable article carrying on at least part of a surface thereof a fabric as claimed in claim 1.
Claim 17
Dependent Claim
11 words
An article as claimed in claim 15 which is dimensionally heat-recoverable.
Claim 18
Dependent Claim
31 words
An article as claimed in claim 16, wherein each of the reactive components has a fusion temperature that is not more than 50° C. above the recovery temperature of the article.
Claim 19
Dependent Claim
27 words
A fabric according to claim 4, wherein the recoverable members have been stretched to an extent that will cause the fabric to recover by at least 40%.
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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) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |