Bulbous configured fiber optic splice closure and associated methods

• US 6,226,435 B1
• Filed: 05/03/1999
• Issued: 05/01/2001
• Est. Priority Date: 05/03/1999
• Status: Expired due to Term

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: Tyco Electronics Corporation (TE Connectivity Limited)
• Inventors: Hunsinger, Terrance D.
• Primary Examiner(s): Lee, John D.
• Assistant Examiner(s): Connelly, Michelle R.
• Application Number:
  US09/303,888
• Time in Patent Office: 729 Days
• Field of Search: 385/134-137
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4446 Cable boxes, e.g. splicing boxes with two or more multi fibre cables
• CPC Class Codes: G02B 6/44465 Seals
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/4453 Cassettes

Abstract

A splice closure includes a splice tray having a medial portion on which at least one optical fiber splice and any slack is contained thereon. The splice tray can be formed from a flexible material, such that the splice tray can be rolled upon itself and biased back into an unrolled condition after any rolling force is released. A bulbous configured closure has at least one opposing opening through which fiber optic cable to be spliced is received. The splice tray is received within the bulbous configured closure. The splice tray is biased into an unrolled condition within the bulbous configured closure to aid in maintaining a minimum bend radius of any fibers.

Claims

1. A fiber optic splice closure comprising:

a splice tray having a medial portion on which at least one optical fiber splice and any slack is contained thereon, and formed from a flexible material such that the splice tray can be rolled upon itself and biased back into an unrolled condition after any rolling force is released; and

a bulbous configured closure having at least one opening through which fiber optic cable to be spliced is received, and containing said splice tray after said splice tray and any optical fiber splice thereon has been received in a rolled condition such that said splice tray is biased into an unrolled condition within said bulbous configured closure to aid in maintaining a minimum bend radius of any fibers.

2. A splice closure according to claim 1, wherein said splice tray further comprises opposing stiff portions on which fiber optic cable is secured.

3. A splice closure according to claim 2, wherein said stiff portions include clamps positioned for securing said fiber optic cable to said stiff portions.

4. A splice closure according to claim 1, wherein said bulbous configured closure is substantially globular shaped.

5. A splice closure according to claim 4, wherein said globular shaped closure is substantially spherical.

6. A splice closure according to claim 1, wherein said splice tray is formed from a flexible plastic material.

7. A splice closure according to claim 1, wherein said bulbous configured closure is formed from a plastic material.

8. A splice closure according to claim 1, and further comprising a seal positioned at said opening of said bulbous configured closure for sealing the opening against the environment.

9. A splice closure according to claim 1, wherein said bulbous configured closure includes two opposing openings.

10. A splice closure comprising:

a splice tray having a substantially planar configured medial portion defined by upper and lower opposing sides and formed from a flexible material such that the splice tray can be rolled upon itself and biased back into an unrolled condition after any rolling force is released, wherein said upper side contains at least one optical fiber splice and any slack contained thereon, and said lower side is adapted to contain at least one copper splice, said splice tray having opposing stiff portions on which fiber/copper cables are secured; and

a bulbous configured closure having at least one opening through which fiber/copper cable to be spliced is received, and containing said splice tray after said splice tray and splices have been received within said opening in a rolled condition such that said splice tray is biased into an unrolled condition within said bulbous configured closure to aid in maintaining any minimum bend radius of any optical fibers.

11. A splice closure according to claim 10, wherein said stiff portions include clamps positioned for securing said fiber/copper cable to said stiff portions.

12. A splice closure according to claim 10, wherein said bulbous configured closure is substantially globular shaped.

13. A splice closure according to claim 12, wherein said globular shaped closure is substantially spherical.

14. A splice closure according to claim 10, wherein said splice tray is formed from a flexible plastic material.

15. A splice closure according to claim 10, wherein said bulbous configured closure is formed from a plastic material.

16. A splice closure according to claim 10, and further comprising a seal positioned at said opening of said bulbous configured closure for sealing the opening against the environment.

17. A splice closure according to claim 10, wherein said bulbous configured closure includes two opposing openings.

18. A splice closure comprising:

a splice tray having a substantially planar configured medial portion defined by upper and lower opposing sides and formed from a flexible material such that the splice tray can be rolled upon itself and biased back into an unrolled condition after any rolling force is released, wherein said upper side contains at least one optical fiber splice and any slack contained thereon, and said lower side is adapted to contain at least one copper splice, said splice tray having opposing stiff portions on which fiber/copper cables are secured; and

a bulbous configured closure formed from a plastic material and having at least one tubular configured extension forming an opening into the interior of the bulbous configured closure through which fiber/copper cable to be spliced is received, and containing said splice tray after said splice tray and splices have been received within said opening in a rolled condition such that said splice tray is biased into an unrolled condition within said bulbous configured closure to aid in maintaining any minimum bend radius of any optical fibers.

19. A splice closure according to claim 18, wherein said splice tray further comprises opposing stiff portions on which fiber/copper cable is secured.

20. A splice closure according to claim 19, wherein said stiff portions include clamps positioned for securing said fiber/copper cable to said stiff portions.

21. A splice closure according to claim 18, wherein said bulbous configured closure is substantially globular shaped.

22. A splice closure according to claim 21, wherein said globular shaped closure is substantially spherical.

23. A splice closure according to claim 22, wherein said splice tray is formed from a flexible plastic material.

24. A splice closure according to claim 18, wherein said bulbous configured closure is formed from a plastic material.

25. A splice closure according to claim 24, and further comprising a seal positioned at said opening for sealing the opening against the environment.

26. A splice closure according to claim 24, wherein said bulbous configured closure includes two opposing openings.

27. A method of forming a splice closure comprising the steps of:

splicing optical fiber received from two fiber optic cables on a medial portion of a splice tray that is formed from a flexible material such that the splice tray can be rolled upon itself and biased back into an unrolled condition after any rolling force is released;

rolling the splice tray upon itself; and

inserting the rolled splice tray into an opening of a bulbous configured closure such that each respective fiber cable extends out of an opening of the bulbous configured closure and the splice tray is biased into an unrolled condition within the interior of the bulbous configured closure to aid in maintaining a minimum bend radius of any optical fibers.

28. A method according to claim 27, and further comprising the step of securing the fiber cable to opposing stiff portions formed on the splice tray.

29. A method according to claim 27, and further comprising the step of sealing the opening of the splice closure with a heat shrink.

30. A method according to claim 27, and further comprising the step of sliding the bulbous configured closure onto a fiber cable before splicing.

31. A method according to claim 27, and further comprising the step of:

sliding at least one heat shrink tube onto respective fiber optic cables before splicing;

sliding the heat shrink tube onto the opening of the bulbous configured closure after the splice tray is received into the bulbous configured closure; and

heat shrinking the heat shrink tube.