Cable breakout article

• US 4,467,137 A
• Filed: 06/21/1982
• Issued: 08/21/1984
• Est. Priority Date: 06/21/1982
• Status: Expired due to Fees

• Current Assignee: Raychem Limited Rolls House
• Original Assignee: Raychem Limited (TE Connectivity Limited)
• Inventors: Thomas, David H., Jonathan, Paget
• Primary Examiner(s): Dixon, Jr., William R.
• Application Number:
  US06/390,715
• Time in Patent Office: 792 Days
• Field of Search: 428/36, 174/DIG. 8, 174/74 A, 174/87, 174/88 R, 174/92, 156/49, 156/86, 156/56
• US Class Current: 174/87
• CPC Class Codes: H02G 15/06 Cable terminating boxes, frames or other structures
• CPC Class Codes: H02G 15/10 protected by boxes, e.g. by distribution, connection or junction boxes
• 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
• CPC Class Codes: Y10T 428/13 Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]

Abstract

A cable breakout article (78) which is formed of a polymeric material and which is preferably heat-recoverable comprises a body portion and at least two tubes or outlet portions (91 to 94) leading from apertures in the body portion. The length and flexibility of the tubes (91 to 94) is such that at least one of them can be bent away from the other(s) to allow operations such as heat recovery to be carried out on an end portion of one of the tubes in isolation from the others.

Preferably one or more of the tubes (95) is corrugated at least near its end adjacent to the body portion (78) so as to assist bending.

Claims

1. An article comprising a substantially dimensionally stable planar or hollow body portion, the body portion if hollow having two substantially cylindrical parts assemblable to form the body portion, wherein the body portion has at least two outlet holes and at least two outlet tubes respectively attached to the outlet holes, and the length and flexibility of the outlet tubes is such that at least one of the outlet tubes can be bent away from the other outlet tube(s) to an extent permitting operations to be carried out at least on an end portion of a selected one of the outlet tubes substantially in isolation from the other outlet tube(s).

21. A kit of parts for making a cable breakout comprising a substantially dimensionally stable housing capable of receiving a portion of a cable and having at least one outlet hole through which conductors may be led off from the cable, and comprising at least one article according to claim 1 or 2.

22. A kit according to claim 21, wherein the body portion of the said article is attached to the said outlet hole.

23. A kit according to claim 21, wherein the housing comprises two portions which are assembleable to enclose the cable portion from which conductors are led off in use, and the kit additionally comprises a recoverable sealing member for sealing the joint between the two housing portions.

24. A kit of parts according to claim 23 wherein the sealing member comprises an elastomeric layer held in an expanded state by adhesion to a substantially rigid outer layer from which the elastomeric layer can be released to recover elastomerically by application of a liquid.

28. An enclosure according to claim 22, wherein the housing is a wraparound heat recoverable sleeve which has been recovered about the said body portion.

2. An article comprising a body portion and at least two tubes leading from apertures in the body portion, wherein at least part of at least one of the tubes is formed of polymeric material and is in a temporarily stable expanded state from which it is recoverable towards an unexpanded state, and the length and flexibility of the tubes is such that at least the said one of the tubes can be bent away from the other tube(s) to an extent permitting operations to effect recovery of an expanded part of a selected one of the tubes to be carried out substantially in isolation from the other tube(s).

3. An article according to claim 2 having at least two said tubes each of which can be bent away from the other to the said extent.

4. An article according to claim 2, wherein the said tubes lie substantially side-by-side.

5. An article according to claim 2, wherein the tubes when unflexed lie substantially parallel to each other.

6. An article according to claim 2, wherein the body portion is tubular and the tubes extend from one end thereof substantially in line therewith.

7. An article according to claim 2, wherein at least part of every tube is formed of polymeric material and is in the expanded state and the length and flexibility of the tubes is such that any one of the tubes can be bent away from the other tube(s) to the said extent.

8. An article according to claim 2, wherein each tube which can be bent to the said extent is corrugated at least near its end adjacent to the body portion so as to assist bending.

9. An article according to claim 2, wherein each tube which can be bent to the said extent can be bent at least 90°

without blocking the tube.

10. An article according to claim 2, wherein each tube which can be bent to the said extent has substantially uniform average internal diameter over all or most of its length.

11. An article according to claim 2, wherein at least part of each tube has substantially uniform average internal diameter over all or most of its length and is in a temporarily stable expanded state from which it is recoverable towards an unexpanded state.

12. An article according to claim 2, wherein at least part of each tube has substantially uniform average internal diameter and the ratio of the length of the part of the tube having substantially uniform average internal diameter to the said average internal diameter is at least 10:

1.

13. An article according to claim 2, wherein at least part of each tube has substantially uniform average internal diameter and the ratio of the length of the part of the tube having substantially uniform average internal diameter to the said average internal diameter is at least 30:

1.

14. An article according to claim 2, wherein a free end portion of at least one tube which can be bent to the said extent is in a temporarily stable expanded state from which it is recoverable towards an unexpanded state and has an average internal diameter substantially greater than that of the remainder of the tube.

15. An article according to claim 2 which has been formed of polymeric material as an integral unit.

16. An article according to claim 2 which has been formed by assembly of two or more separate parts.

17. An article according to claim 2, wherein at least one of the tubes has a cable portion pre-installed therein ready for connection to another cable with which the article will be associated in use.

18. An article according to claim 2, wherein the recoverable parts are heat recoverable.

19. An article according to claim 2, wherein the body portion is in the form of a hollow shell capable of receiving therein a portion of an electrical cable from which electrical conductors are to be led off through one or more of the tubes.

20. A kit of parts for making a cable breakout comprising a heat recoverable wraparound sleeve and an article according to claim 2.

25. A kit of parts for making a cable breakout comprising a substantially dimensionally stable housing capable of receiving a portion of a cable, the housing comprising two substantially cylindrical parts one of which parts has at least two outlet holes through which conductors may be led off from the cable and has attached at least to each of the said two outlet holes respectively outlet tubes of such length and flexibility that at least one of the outlet tubes can be bent away from the other outlet tube(s) to an extent permitting operations to be carried out at least on an end portion of a selected one of the outlet tubes substantially in isolation from the other outlet tube(s), the two parts of the housing being assemblable to enclose the part of the cable from which conductors are led off in use.

26. An enclosure comprising a housing capable in use of receiving part of a cable from which one or more portions are to be divided out, and an article formed of polymeric material comprising a body portion attached to the housing and at least two tubes leading from apertures in the body portion, the length and flexibility of the tubes being such that at least one of the tubes can be bent away from the other tube(s) to an extent permitting operations to be carried out at least on an end portion of a selected one of the tubes substantially in isolation from the other tube(s).

27. An enclosure according to claim 26, wherein the body portion of the said article is partly enclosed in the housing.

29. An enclosure according to claim 26, wherein the housing is substantially dimensionally stable and the said article is attached to an outlet hole of the housing.

30. An enclosure according to claim 29, wherein the body portion of the said article is recoverable and has been recovered onto a tubular projection surrounding the outlet hole.

31. An enclosure according to claim 29, wherein the housing is substantially cylindrical and is in two parts which parts are assemblable in use to enclose a portion of a cable from which portions are to be led off through the said article.

32. An enclosure according to claim 31, wherein the parts of the housing have been assembled and are sealed together by a recoverable member which has been recovered about the joint between the housing parts.

33. An enclosure according to claim 26 installed on a cable breakout.

34. A method of making a cable breakout wherein a cable portion is led off through or a connection is made to the free end of a cable portion extending through a tube of an article comprising a body portion and at least two tubes leading from apertures in the body portion, wherein at least part of at least one of the tubes is formed of polymeric material and is in a temporarily stable expanded state from which it is recoverable towards an unexpanded state, and the length and flexibility of the tubes is such that at least the said one of the tubes can be bent away from the other tube(s) to an extent permitting operations to effect recovery of an expanded part of a selected one of the tubes to be carried out substantially in isolation from the other tube(s) whereby that tube is isolated from the other tube of the said article by bending the one or the other to an extent permitting operations to be carried out at least on an end portion of that tube substantially in isolation from the other tube(s) and operations are thereafter carried out on a portion of that tube substantially in isolation from the other tube(s) to seal the tube around the relevant cable portion and/or the said connection.

35. A method according to claim 34 wherein heat is applied to recover a heat recoverable part of the relevant tube or a further heat recoverable article applied thereto independently of any heat recoverable parts of the other tube(s).