Method for sealing the end of a heat-shrunk sleeve

• US 5,376,196 A
• Filed: 06/29/1993
• Issued: 12/27/1994
• Est. Priority Date: 07/11/1991
• Status: Expired due to Fees

• Current Assignee: Raychem Limited (TE Connectivity Limited)
• Original Assignee: kabelmetal electro GmbH
• Inventors: Grajewski, Franz, Schottker, Reinhard
• Primary Examiner(s): Weston, Caleb
• Assistant Examiner(s): Lorin, Francis J.
• Application Number:
  US08/084,572
• Time in Patent Office: 546 Days
• Field of Search: 156/47, 156/49, 156/85, 156/86, 264/342 R
• US Class Current: 156/85
• CPC Class Codes: B29C 61/0641 Clips for dividing preforms or forming branch-offs clips in general F16B2/20
• CPC Class Codes: F16B 2/12 using sliding jaws
• CPC Class Codes: F16B 2/20 Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening

Abstract

A method including using a device for sealing the end of a heat-shrunk sleeve enclosing a branch connection of electrical or optical cables which grips the outside surface of the sleeve between the branched cables and keeps the opposing surface areas of the sleeve between the cables in contact with each other during cooling of the heat-shrunk sleeve. The device has two identical preformed parts. Each part has a foot part and an arm extending in a semicircle from the foot part. The foot part has at least one peg and one bore, through which the preformed parts can be joined to form the device. The arms encircle one of the branched cables and the free ends of the arms grip the sleeve between the branched cables.

Claims

1. A method for sealing an end of a heat-shrunk sleeve enclosing a branch connection of electrical or optical cables, comprising the steps of:

(a) providing at least two cables having a branch connection therebetween;

providing a sleeve over the branch connection; and

(c) providing a device which grips the sleeve between the cables, and keeps opposing surfaces of the sleeve between the cables in contact with each other during cooling of the sleeve following heat shrinking thereof, the device comprising first and second preformed parts, each preformed part having a foot part and an arm extending in a semi-circle from the foot part, the foot part of the first preformed part has at least one peg and the foot part of the second preformed part has at least one bore dimensionally sized to accept the at least one peg in mating relationship, whereby the preformed parts are joined to each other so that the arms encircle one of the cables, and free ends of the arms spaced from the foot parts grip the sleeve between the cables.

2. A method according to claim 1, wherein each of the at least one bore and the at least one peg have undercuts, which interlock with each other when the preformed parts are joined to each other.

3. A method according to claim 2, wherein the at least one peg has at least one slot along its length.

4. A method according to claim 3, wherein an outside surface of the arm of each preformed part has a reinforcing rib.

5. A method according to claim 4, the preformed parts are injection molded parts.

6. A method according to claim 5, wherein the at least one peg and the at least one bore each have rectangular cross-sectional shape.

7. A method according to claim 1, wherein the at least one peg has at least one slot along its length.

8. A method according to claim 1, wherein an outside surface of the arm of each preformed part has a reinforcing rib.

9. A method according to claim 1, wherein the preformed parts are injection molded parts.

10. A method according to claim 1, wherein the at least one peg and the at least one bore each have rectangular cross-sectional shape.

11. A method according to claim 1, wherein the first and second preformed parts are formed of a plastic resin material.

12. A method according to claim 1, wherein the foot part of the second preformed part has at least one peg and the foot part of the first preformed part has at least one bore dimensionally sized to accept the at least one peg of the second preformed part in mating relationship, whereby the preformed parts can be joined to each other so that the arms encircle one of the cables and the free ends of the arms grip the sleeve between the cables.

13. A method according to claim 12, wherein each of the at least one bore and the at least one peg have undercuts, which interlock with each other when the preformed parts are joined to each other.

14. A method according to claim 12, wherein the first and second preformed parts are identical in shape.

15. A method according to claim 12, wherein an outside surface of the arm of each preformed part has a reinforcing rib.

16. A method according to claim 12, wherein the preformed parts are injection molded parts.

17. A method according to claim 12, wherein the first and second preformed parts are formed of a plastic resin material.

18. A method according to claim 1, wherein the device providing step is performed before heat shrinking of the sleeve.

19. A method according to claim 1, wherein the device providing step is performed during heat shrinking of the sleeve.

20. A method according to claim 1, wherein the device providing step is performed after heat shrinking of the sleeve.