Fiber optic splice closure

• US 5,479,553 A
• Filed: 04/19/1993
• Issued: 12/26/1995
• Est. Priority Date: 04/19/1993
• Status: Expired due to Term

• Current Assignee: Tyco Electronics Corporation (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: Raychem Limited (TE Connectivity Limited)
• Inventors: Holman, John R., Daems, Daniel F., Wilcox, Edward J., Claunch, Carney P. II
• Primary Examiner(s): FONT, FRANK G
• Application Number:
  US08/049,202
• Time in Patent Office: 981 Days
• Field of Search: 385/135, 385/134
• 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: Y10T 29/49194 Assembling elongated conductors, e.g., splicing, etc.
• CPC Class Codes: Y10T 29/49195 with end-to-end orienting
• CPC Class Codes: Y10T 29/49732 by attaching repair preform, e.g., remaking, restoring, or patching

Abstract

A splice closure including a frame having a partition wall to define front and rear access areas for the closure. The frame carries one or more splice trays on a first surface portion making the splices accessible from the front or first access area. A slack storage compartment is provided on the second surface portion. The slack storage compartment includes one or more pairs of opposing sidewalls that define an access opening for the slack that is accessible from the rear access area. An extension member for the frame is disclosed for obtaining greater amounts of slack from the cable, such as for a taut sheath cable splice. A tandem longitudinal arrangement of splice trays is also disclosed and may be used for a taut sheath ring splice or for repairing a severed cable.

Claims

1. A fiber optic splice closure for one or more fiber optic cables of the type having one or more optical fibers, said splice closure comprising:

an elongate frame having opposing ends, said frame including partition wall means for defining opposing first and second surface portions extending longitudinally between opposing ends of said frame, said opposing first and second surface portions defining respective opposing first and second access areas;

splice organizing means on the first surface portion of said partition wall means for securing splices between predetermined optical fibers so that the splices are accessible and reaccessible from the first access area without disturbing the second access area; and

slack storage means on the second surface portion of said partition wall means for storing slack optical fibers so that the slack optical fibers are accessible and reaccessible from the second access area without disturbing the first access area.

2. A splice closure according to claim 1 wherein said slack storage means comprises a pair of opposing spaced apart sidewalls depending from said wall partition means and defining a slack storage access opening for facilitating access to the slack optical fibers from the second access area.

3. A splice closure according to claim 1 wherein said splice organizing means comprises a plurality of splice trays, and mounting means for mounting said splice trays in a stack, and wherein said mounting means includes means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said wall partition means and a raised position facilitating access to an underlying splice tray.

4. A splice closure according to claim 3 further comprising a second plurality of splice trays, and second mounting means for mounting said splice trays in a second stack longitudinally adjacent the first stack on said wall partition means, and wherein said second mounting means includes second means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said wall partition means and a raised position facilitating access to an underlying splice tray.

5. A splice closure according to claim 1 wherein said wall partition means includes at least one guide opening therethrough for routing optical fibers between said first and second access areas.

6. A splice closure according to claim 5 wherein said at least one guide opening is open outwardly to an edge of said wall partition means to facilitate positioning of optical fibers through said at least one guide opening without requiring severing of the optical fibers.

7. A splice closure according to claim 1 wherein said wall partition means comprises a pair of opposing spaced apart generally rectangular walls lying in a common plane and extending in a longitudinal direction thereby defining a longitudinally extending guide opening for routing optical fibers between said first and second access areas.

8. A splice closure according to claim 1 wherein said wall partition means comprises a generally rectangular wall having at least one T-shaped opening therein and defining at least one guide opening for routing optical fibers between said first and second access areas.

9. A splice closure according to claim 1 further comprising a longitudinal extension member connected to an end of said wall partition means.

10. A splice closure according to claim 1 further comprising a housing surrounding said frame, said splice organizer means, and said slack storage means.

11. A splice closure according to claim 10 wherein said housing comprises a tubular shell and a heat recoverable material surrounding said tubular shell.

12. A splice closure according to claim 11 wherein said tubular shell comprises first and second longitudinally extending sections, and wherein an end portion of the first section is slidably positioned within an end portion of the second section.

13. A splice closure according to claim 11 further comprising a pair of elongate bodies extending longitudinally outward from respective ends of said frame and engaging respective ends of said heat recoverable housing to enhance sealing of same.

14. A splice closure according to claim 10 wherein said housing comprises first and second longitudinally extending plastic panels, and an integrally molded lengthwise extending hinge portion interconnecting said first and second plastic panels.

15. A splice closure according to claim 1 further comprising cable securing means carried by opposing end portions of said frame for securing respective fiber optic cables to said frame in an in-line configuration.

16. A fiber optic splice closure for one or more fiber optic cables of the type having one or more optical fibers, said splice closure comprising:

an elongate frame having opposing ends, said frame including partition wall means for defining opposing first and second surface portions extending longitudinally between opposing ends of said frame, said opposing first and second surface portions defining respective opposing first and second access areas;

splice organizing means on the first surface portion of said partition wall means for securing splices between predetermined optical fibers so that the splices are accessible and reaccessible from the first access area, said splice organizing means comprising a plurality of splice trays and mounting means for mounting said splice trays in a stack, said mounting means including means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said wall partition means and a raised position facilitating access to an underlying splice tray; and

slack storage means on the second surface portion of said partition wall means for storing slack optical fibers so that the slack optical fibers are accessible and reaccessible from the second access area, said slack storage means comprising a pair of opposing spaced apart sidewalls depending from said wall partition means and defining a slack storage access opening for facilitating access to the slack optical fibers from the second access area.

17. A splice closure according to claim 16 wherein said splice organizing means further comprises a second plurality of splice trays, and second mounting means for mounting said splice trays in a second stack longitudinally adjacent the first stack on said wall partition means, and wherein said second mounting means includes second means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said wall partition means and a raised position facilitating access to an underlying splice tray.

18. A splice closure according to claim 16 wherein said wall partition means includes at least one guide opening therethrough for routing optical fibers between said first and second access areas.

19. A splice closure according to claim 18 wherein said at least one guide opening is open outwardly to an edge of said wall partition means to facilitate positioning of optical fibers through said at least one guide opening without requiring severing of the optical fibers.

20. A splice closure according to claim 16 wherein said wall partition means comprises a pair of opposing spaced apart generally rectangular walls extending in a common plane and in a longitudinal direction thereby defining a longitudinally extending guide opening for routing optical fibers between said first and second access areas.

21. A splice closure according to claim 16 wherein said wall partition means comprises a generally rectangular wall having at least one T-shaped opening therein and defining at least one guide opening for routing optical fibers between said first and second access areas.

22. A splice closure according to claim 16 further comprising a longitudinal extension member connected to an end of said wall partition means.

23. A splice closure according to claim 16 further comprising a housing surrounding said frame, said splice organizer means, and said slack storage means.

24. A splice closure according to claim 23 wherein said housing comprises a tubular shell and a heat recoverable material surrounding said tubular shell.

25. A splice closure according to claim 24 wherein said tubular shell comprises first and second longitudinally extending sections, and wherein an end portion of the first section is slidably positioned within an end portion of the second section.

26. A splice closure according to claim 24 further comprising a pair of elongate bodies extending longitudinally outward from respective ends of said frame and engaging respective ends of said heat recoverable housing to enhance sealing of same.

27. A splice closure according to claim 23 wherein said housing comprises first and second longitudinally extending plastic panels, and an integrally molded lengthwise extending hinge portion interconnecting said first and second plastic panels.

28. A splice closure according to claim 16 further comprising cable securing means carried by opposing end portions of said frame for securing respective fiber optic cables to said frame in an in-line configuration.

29. A fiber optic splice closure for one or more fiber optic cables of the type having one or more optical fibers, said splice closure comprising:

an elongate frame;

splice organizing means on said frame for securing splices between predetermined optical fibers, said splice organizing means comprising a plurality of splice trays and first and second mounting means for mounting said plurality of splice trays in respective first and second longitudinally adjacent stacks on said frame, each of said first and second mounting means including means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said frame and a raised position facilitating access to an underlying splice tray;

said elongate frame including partition wall means for defining opposing first and second surface portions extending longitudinally between opposing ends of said frame, wherein said opposing first and second surface portions define respective opposing first and second reaccessible access areas, and wherein said splice organizing means is on the first surface portion of said wall partition means; and

slack storage means on the second surface portion of said wall partition means for storing slack optical fibers.

30. A splice closure according to claim 29 wherein said slack storage means comprises a pair of opposing spaced apart sidewalls depending from said partition wall means and defining a slack storage access opening for facilitating access to the slack optical fibers from the second access area.

31. A splice closure according to claim 29 further comprising a housing surrounding said frame, and said splice organizer means.

32. A splice closure according to claim 31 wherein said housing comprises a tubular shell and a heat recoverable material surrounding said tubular shell.

33. A splice closure according to claim 32 wherein said tubular shell comprises first and second longitudinally extending sections, and wherein an end portion of the first section is slidably positioned within an end portion of the second section.

34. A splice closure according to claim 32 further comprising a pair of elongate bodies extending longitudinally outward from respective ends of said frame and engaging respective ends of said heat recoverable housing to enhance sealing of same.

35. A splice closure according to claim 31 wherein said housing comprises first and second longitudinally extending plastic panels, and an integrally molded lengthwise extending hinge portion interconnecting said first and second plastic panels.

36. A splice closure according to claim 29 further comprising cable securing means carried by opposing end portions of said frame for securing respective fiber optic cables to said frame in an in-line configuration.

37. A fiber optic splice closure for one or more fiber optic cables of the type having one or more optical fibers, said splice closure comprising:

an elongate frame;

splice organizing means on said frame for securing splices between predetermined optical fibers, said splice organizing means comprising a plurality of splice trays and first and second mounting means for mounting at least one of said splice trays in each of respective first and second longitudinally adjacent positions on said elongate frame;

said elongate frame including partition wall means for defining opposing first and second surface portions extending longitudinally between opposing ends of said frame, wherein said opposing first and second surface portions define respective opposing first and second reaccessible access areas, and wherein said splice organizing means is on the first surface portion of said wall partition means; and

slack storage means on the second surface portion of said wall partition means for storing slack optical fibers.

38. A splice closure according to claim 37 wherein said slack storage means comprises a pair of opposing spaced apart sidewalls depending from said partition wall means and defining a slack storage access opening for facilitating access to the slack optical fibers from the second access area.

39. A splice closure according to claim 37 further comprising a housing surrounding said frame, and said splice organizer means.

40. A splice closure according to claim 39 wherein said housing comprises a tubular shell and a heat recoverable material surrounding said tubular shell.

41. A splice closure according to claim 40 wherein said tubular shell comprises first and second longitudinally extending sections, and wherein an end portion of the first section is slidably positioned within an end portion of the second section.

42. A splice closure according to claim 40 further comprising a pair of elongate bodies extending longitudinally outward from respective ends of said frame and engaging respective ends of said heat recoverable housing to enhance sealing of same.

43. A splice closure according to claim 39 wherein said housing comprises first and second longitudinally extending plastic panels, and an integrally molded lengthwise extending hinge portion interconnecting said first and second plastic panels.

44. A splice closure according to claim 37 further comprising cable securing means carried by opposing end portions of said frame for securing respective fiber optic cables to said frame in an in-line configuration.

45. A fiber optic splice closure for fiber optic cables of the type having one or more optical fibers, said splice closure comprising:

an elongate frame;

splice organizer means on said frame for securing optical fiber splices between respective fiber optic cables;

a longitudinal extension member connected to an end of said frame;

cable securing means carried by opposing end portions of said frame and said extension member for securing a fiber optic cable in an in-line configuration; and

a housing extending longitudinally along said frame and said extension member, said housing surrounding said frame, said extension member and said splice organizer means.

46. A splice closure according to claim 45 wherein said housing comprises a tubular shell and a heat recoverable material surrounding said tubular shell.

47. A splice closure according to claim 46 wherein said tubular shell comprises first and second longitudinally extending sections, and wherein an end portion of the first section is slidably positioned within an end portion of the second section.

48. A splice closure according to claim 46 further comprising a pair of elongate bodies extending longitudinally outward from respective ends of said frame and said extension member and engaging respective ends of said heat recoverable housing to enhance sealing of same.

49. A splice closure according to claim 45 wherein said housing comprises first and second longitudinally extending plastic panels, and an integrally molded lengthwise extending hinge portion interconnecting said first and second plastic panels.

50. A splice closure according to claim 45 wherein said elongate frame includes partition wall means for defining opposing first and second surface portions extending longitudinally between opposing ends of said frame, wherein said opposing first and second surface portions define respective opposing first and second access areas, and wherein said splice organizing means is on the first surface portion of said wall partition means.

51. A splice closure according to claim 50 wherein said splice organizing means comprises a plurality of splice trays and mounting means for mounting said splice trays in a stack on the first surface portion of said partition wall means, and wherein said mounting means includes means for pivotally mounting an end of each splice tray for pivotal movement between a stored position generally parallel with said wall partition means and a raised position facilitating access to an underlying splice tray.

52. A splice closure according to claim 50 further comprising slack storage means on the second surface portion of said wall partition means for storing slack optical fibers, and wherein said slack storage means comprises a pair of opposing spaced apart sidewalls depending from said partition wall means and defining a slack storage access opening for facilitating access to the slack optical fibers from the second access area.