US4803103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recoverable article
Assignee: Raychem Corp
•
Filing: 1986-12-22
•
Granted: 1989-02-07
•
Expires: 2006-12-22
Abstract
Abstract A recoverable article comprises a fabric having zones of different or uniformly varying recovery forces or ratios. The fabric can be made impervious and used for environmental protection.
Inventors
- 👤 Kenneth B. Pithouse
- 👤 Thomas A. Kridl
- 👤 James T. Triplett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29D23/003; B29D23/008; H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0616; B29C61/0633; B29C61/0658; B29C63/00; B29C63/38; B29C63/42; B29C65/00; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5326; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91218; B29C66/91221; B29C66/914; B29C66/9141; B29C66/91411; B32; B32B; B32B27/00; B32B27/12; D; D03; D03D; D03D1/00; D03D1/0035; D03D1/0043; F; F16; F16L; F16L47/00; F16L47/20; F16L47/22; H02G15/1806; H02G15/1813; B29C61/0666; B29C2061/0683; B29C2793/00; B29C2793/0081; B29C57/00; B29C65/56; B29C65/62; B29C66/13; B29C66/131; B29C66/1312; B29C66/52; B29C66/526; B29C66/5261; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/72327; B29C66/72328; B29C66/7234; B29C66/72341; B29C66/72343; B29C66/729; B29C66/7294; B29C66/919; B29K; B29K2313/00; B29K2995/00; B29K2995/0037; B29K2995/0049; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1328; Y10T428/1331
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
74 words
A hollow recoverable sleeve suitable for environmental protection of a substrate, which comprises: a recoverable fabric having a plurality of zones respective zones having different recovery ratios or forces, the fabric having been woven from a plurality of fibres of different recovery ratios or forces, respective fibres corresponding to respective zones; a polymeric matrix material by means of which the fabric is rendered substantially impervious; the sleeve having a length greater than its diameter.
Claim 2
Dependent Claim
74 words
A hollow recoverable sleeve suitable for environmental protection of a substrate, which comprises: a recoverable fabric having a plurality of zones respective zones having different recovery ratios or forces, the fabric having been woven from a plurality of fibres of different recovery ratios or forces, respective fibres corresponding to respective zones; a polymeric matrix material by means of which the fabric is rendered substantially impervious; the sleeve having a length greater than its diameter.
Claim 3
Dependent Claim
27 words
A sleeve according to claim 1, in which the fabric is woven from recoverable polymeric warp fibres, the warp frame comprising zones of fibres of different recovery.
Claim 4
Dependent Claim
14 words
A sleeve according to claim 2 in which the fibres are cross-linked before weaving.
Claim 5
Dependent Claim
27 words
A sleeve according to claim 1, in which the fabric is a plain weave, a twill, a satin, or a braid, a knit or a non-woven fabric.
Claim 6
Dependent Claim
21 words
A sleeve according to claim 4, in which the fabric is a weave having substantially heat-stable weft, or substantially heat-stable warp.
Claim 7
Dependent Claim
24 words
A sleeve according to claim 1, in which the surface of the fabric is substantially developable before recovery and is not developable after recovery.
Claim 8
Dependent Claim
19 words
A sleeve according to claim 1, in which the fabric contains glass fibres or fibres of an aromatic polyamide.
Claim 9
Dependent Claim
29 words
A sleeve according to claim 1, in which the fabric is rendered substantially impervious by means of a polymeric material adhered to at least one surface of the fabric.
Claim 10
Dependent Claim
26 words
A sleeve according to claim 1, which additionally comprises a liner having a central tubular portion and end portions of generally frustoconical shape when in use.
Claim 11
Dependent Claim
37 words
A sleeve according to claim 9, in which the liner comprises a layer of material which can be wrapped around the substrate and which has crowned end regions by means of which the transitions can be produced.
Claim 12
Dependent Claim
13 words
A sleeve according to claim 1, in which the fabric is radially recoverable.
Claim 13
Dependent Claim
27 words
A sleeve according to claim 11, in which the recovery ratios at end portions of the sleeve are greater than the recovery ratio at a central portion.
Claim 14
Dependent Claim
62 words
A sleeve according to claim 1, which additionally comprises at least one auxiliary member which can be interposed between the fabric and the substrate and so positioned as to be able to be deformed by forces generated by pressure within the article so that one portion of the member is forced against the fabric and another portion is forced against the substrate.
Claim 15
Dependent Claim
40 words
A sleeve according to claim 1, capable of sealing a branch-off between at least two substrates, and which additionally comprises means for holding together circumferentially spaced portions of the fabric to close at least partially the branch-off between the substrates.
Claim 16
Dependent Claim
20 words
A sleeve according to claim 14, in which the means for holding is a clip having at least two legs.
Claim 17
Dependent Claim
18 words
A sleeve according to claim 1, in which the fabric has an internal coating of a heat-activatable adhesive.
Claim 18
Dependent Claim
12 words
A sleeve according to claim 1, in which the fabric is heat-recoverable.
Claim 19
Dependent Claim
38 words
A sleeve according to claim 1, in which the cover portion has a temperature indicating composition on an external surface which changes colour indicating recovery of the fabric or activation of an internal coating of a heat-activatable adhesive.
Claim 20
Dependent Claim
14 words
A sleeve according to claim 1, in which the sleeve has a wraparound configuration.
Claim 21
Dependent Claim
18 words
An elongate substrate or a junction between elongate substrates when enclosed by a sleeve according to claim 1.
Claim 22
Dependent Claim
19 words
A substrate or a junction according to claim 20, in which the or each substrate is a electrical cable.
Claim 23
Dependent Claim
19 words
A substrate or a junction according to claim 20 in which the or each substrates is a telecommunications cable.
Claim 24
Dependent Claim
17 words
A substrate or a junction according to claim 22, in which the cable is a pressurised cable.
Claim 25
Dependent Claim
17 words
A substrate or junction according to claim 20, in which the or each substrate is a pipe.
References Cited (Backward Citations)
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |