EP0209399A2
Expired / Lapsed
EP
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Application of a sealing material
Assignee: Raychem Corp
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Filing: 1986-07-18
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Granted: —
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Expires: 2006-07-18
Abstract
Abstract A sealing material (17) such as an adhesive, a mastic, or a gel, is forced against a substrate, in order to provide environmental sealing etc. by means of a double-walled article (1) that allows shear between its walls (2, 3) and can avoid shear between it (1) and the sealing material (17). Thus, the sealing material (17) can be forced against the substrate without tendency of its being displaced.
Inventors
- 👤 Peter Lars Larsson
- 👤 Stephen Edward Sheehan
- 👤 Neil Lawrence Holt
- 👤 Manoochehr Mohebban
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:53
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/18; H; H02; H02G; H02G15/00; H02G15/013; F16L47/00; F16L47/20; F16L5/00; F16L5/02; F16L58/00; F16L58/18; F16L58/181; F16L59/00; F16L59/14; F16L59/16; F16L59/18; F16L59/20; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306; H02G15/08; H02G15/18
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
79 words
A method of environmentally sealing a substrate, which comprises: forcing a sealing material against the substrate by revolving over the substrate an article comprising a double-walled tube such that tension within a wall of the tube acts on the sealing material; said double-walled tube being capable of continuously revolving along an elongate member by relative sliding motion between the two walls of the double wall substantially without relative sliding motion between a wall adjacent the member and the member.
Claim 2
Independent Claim
79 words
A method of environmentally sealing a substrate, which comprises: forcing a sealing material against the substrate by revolving over the substrate an article comprising a double-walled tube such that tension within a wall of the tube acts on the sealing material; said double-walled tube being capable of continuously revolving along an elongate member by relative sliding motion between the two walls of the double wall substantially without relative sliding motion between a wall adjacent the member and the member.
Claim 3
Dependent Claim
19 words
A method according to claim 1, in which the double wall defines a closed region between its two walls.
Claim 4
Dependent Claim
22 words
A method according to claim 2, in which separating means or friction-reducing means is provided between the walls of the double-walled tube.
Claim 5
Dependent Claim
27 words
A method according to claim 3, in which the friction-reducing means comprises a liquid capable of maintaining lubrication under a pressure gradient of 27 kPa per cm.
Claim 6
Dependent Claim
42 words
A method according to claim 3, in which the friction-reducing means comprises a non-newtonian liquid having a viscosity at a shear rate of 1 reciprocal second that is greater than 5 times the viscosity at a shear rate of 100 reciprocal seconds.
Claim 7
Dependent Claim
12 words
A method according to claim 5, in which the liquid exhibits pituity.
Claim 8
Dependent Claim
22 words
A method according to claim 4 or 5, in which the liquid comprises a dilute solution of a high molecular weight polymer.
Claim 9
Independent Claim
51 words
A method according to any of claims 2-7, in which a non-setting liquid is provided between said two walls and the volume of the closed region is such that when the article is on the substrate the average separation between its wall is less than 10 times its average wall thickness.
Claim 10
Independent Claim
62 words
A method according to any preceding claim, in which the article is revolved over an end of the substrate by engaging an inner wall of the tube and said end of the substrate, and applying an axial compressive force between the substrate and an outer wall of the tube at a position less than 7 cm from said end of the substrate.
Claim 11
Independent Claim
43 words
A method according to any preceding claim, in which said double wall comprises one or more elastomeric materials having a secant modulus at 100% elongation of less than 27.4 Kg per cm² (350 p.s.i.) and an elongation to break of at least 100%.
Claim 12
Independent Claim
25 words
A method according to any of claims 1-13, in which the sealing material comprises a mastic, or a gel, or a curable or pressure-sensitive adhesive.
Claim 13
Dependent Claim
18 words
A method according to claim 11, in which the gel has a cone penetration value of 100-350 (MM⁻¹).
Claim 14
Dependent Claim
20 words
A method according to claim 11 or 12, in which the gel has an ultimate elongation of at least 200%.
Claim 15
Dependent Claim
25 words
A method according to claim 11, 12 or 13, in which the sealing material is applied to the substrate in the form of a tape.
Claim 16
Independent Claim
18 words
A method according to 14, in which the tape comprises a perforate material impregnated with the sealing material.
Claim 17
Independent Claim
18 words
A method according to 14, in which the tape comprises a perforate material impregnated with the sealing material.
Claim 18
Independent Claim
67 words
A method according to any preceding claim, in which the sealing material comprises a non-silicone polymer having an olefinic unsaturated content of less than 10 mole per cent and having 0.1-3 cross-links per weight average molecule; a liquid dispersed in the polymer in an amount of 20-95% based on the weight of the liquid and the polymer; and optionally a filler dispersed in the liquid and/or polymer.
Claim 19
Independent Claim
34 words
A method according to any preceding claim, in which the substrate comprises a high voltage conductor splice or termination and the sealing material has a specific impedance of 10⁷-10¹⁰ ohm cm at 60 Hz.
Claim 20
Independent Claim
24 words
A method according to any preceding claim, in which the double-walled tube comprises a material having a resistivity of greater than 10¹⁰ ohm cm.
Claim 21
Independent Claim
43 words
A method according to any preceding claim, in which the substrate is of non-uniform or non-circular cross-section and said sealing material has a cone penetration of 10-350 (10⁻¹MM), said revolving causing the sealing material substantially to conform to the surface of the substrate.
Claim 22
Dependent Claim
30 words
A method according to claim 19, in which the substrate comprises a cable branch, the sealing material being caused substantially to conform to the crutch region between the branching cables.
Claim 23
Dependent Claim
52 words
A kit of parts that comprises: at least one article comprising a double-walled tube capable of continuously revolving along an elongate member by relative sliding motion between the two walls of the double wall substantially without relative sliding motion between a wall adjacent the member and the member; and a sealing material.
Claim 24
Dependent Claim
52 words
A kit of parts that comprises: at least one article comprising a double-walled tube capable of continuously revolving along an elongate member by relative sliding motion between the two walls of the double wall substantially without relative sliding motion between a wall adjacent the member and the member; and a sealing material.
Claim 25
Dependent Claim
24 words
A kit according to claim 21, in which the sealing material comprises an adhesive, a mastic, a gel, a gelloid composition or a mortar.
Claim 26
Dependent Claim
84 words
A kit according to claim 21 or 22, which additionally comprises one or more of the following: means for cleaning a surface of a cable; a liner that can surround a substrate and over which the double-walled tube can be revolved; a casing that can be secured around the double-walled tube when on the substrate; a branch-off clip; an electrical conductor suitable for providing shield continuity across a splice between shielded cables; and a clamp that can restrict revolving action of the double-walled tube.
References Cited (Backward Citations)
No citation records indexed.
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