Sealable recoverable articles

• US 4,504,699 A
• Filed: 02/03/1983
• Issued: 03/12/1985
• Est. Priority Date: 02/08/1982
• Status: Expired due to Term

• Current Assignee: Raychem Pontoise SA
• Original Assignee: Raychem Pontoise SA
• Inventors: Street, David G., Dones, Roberto
• Primary Examiner(s): Grimley, A. T.
• Assistant Examiner(s): Nimmo, Morris H.
• Application Number:
  US06/463,684
• Time in Patent Office: 768 Days
• Field of Search: 174/76, 174/84 R, 174/84 C, 174/87, 174/DIG. 8, 29/855, 29/856, 29/858, 29/859, 29/869, 29/870, 29/871, 324/72.5
• US Class Current: 174/84.00R
• CPC Class Codes: B29C 61/0608 characterised by the configuration or structure of the preforms
• CPC Class Codes: B29C 61/0616 layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions B29C61/0625 and B29C61/065 take precedence
• CPC Class Codes: H01R 4/723 Making a soldered electrical connection simultaneously with the heat shrinking
• CPC Class Codes: H02G 15/1806 Heat shrinkable sleeves insulation of electrical connections using a heat shrinking insulating sleeve H01R4/72
• CPC Class Codes: Y10S 174/08 Shrinkable tubes

Abstract

The device for enclosing at least part of an elongation object, preferably a connection between electrical conductors, comprising a hollow dimensionally recoverable article having an aperture that communicates between the interior and the exterior of the article, and a quantity of material which seals an aperture. The material is self sealing so that it will allow penetration of a test probe through the material and will continue to seal the article after removal of the probe. Advantageously the article contains an arrangement for connecting electrical conductors, for example a solder insert or crimping connector.

Claims

1. A device for forming and enclosing an electrical connection between a plurality of electrical conductors, which comprises:

(a) a hollow, dimensionally-recoverable article having a first and a second dimensionally-recoverable end portion and a central portion, the first end portion being open to allow insertion of electrical conductors therein and the second end portion having an aperture that communicates between the interior and the exterior of the article;

(b) an arrangement for electrically connecting electrical conductors, which is located in the central portion of the article; and

(c) a quantity of self-supporting material which is located in the second end portion and held therein by the article, wherein, at least after the article has been recovered, the material seals the aperture but can be penetrated by a probe, the material being self-sealing at least when held by the article so that it will seal the aperture after removal of a probe.

2. A device according to claim 1, in which the material is inherently self-sealing.

3. A device according to claim 1, which comprises a first heat-recoverable portion, and a second non recoverable portion that contains said self-sealing material.

4. A device according to claim 1, in which the article is in the form of a tubular sleeve.

5. A device according to claim 1, in which the article is in the form of a tubular sleeve, one end of which is closed by the said material, and the other end of which is open and has a heat-activatable adhesive.

6. A device according to claim 1, which is heat-recoverable.

7. A device according to claim 1, in which the self-sealing material is positioned such that, on partial recovery of the article, the forces of recovery cause the material to be held in place.

8. A device according to claim 1, in which the self sealing material is an elastomeric material.

19. A device according to claim 2, in which the self-sealing material is an insulating gel.

9. A device for forming and enclosing an electrical connection between a plurality of electrical conductors, which comprises:

(a) a hollow, dimensionally-recoverable article having a first and a second dimensionally-recoverable end portion and a central portion, the first end portion being open to allow insertion of electrical conductors therein and the second end portion being closed;

(b) an arrangement for electrically connecting electrical conductors, which is located in the central portion of the article; and

(c) a quantity of material which is located in the second end portion and held therein by the article, and which can be penetrated by a probe inserted into the second end portion of the article from the exterior thereof, the material being self-sealing at least when held by the article so that, after removal of a probe, it will seal any aperture formed in the article by a probe.

10. A device according to claim 9, which includes an electrically conductive member positioned between the self-sealing material and the arrangement for electrically connecting conductors.

11. A device as claimed in claim 9, wherein the arrangement for connecting conductors comprises a quantity of fusible electrically conductive material.

12. A device as claimed in claim 9, wherein the fusible electrically conductive material is solder.

13. A device as claimed in claim 9, wherein the arrangement for connecting conductors comprises a crimp connector.

14. A device according to claim 9, in which the article is in the form of a tubular sleeve.

15. A device according to claim 9, in which the article is in the form of a tubular sleeve, one end of which is closed by the said material, and the other end of which is open and has a heat-activatable adhesive.

16. A device according to claim 9, which is heat-recoverable.

17. A device according to claim 9, in which the self-sealing material is positioned such that, on partial recovery of the article, the forces of recovery cause the material to be held in place.

18. A device according to claim 9, in which the self sealing material is an elastomeric material.