Optical fiber cable splice closure

• US 5,450,518 A
• Filed: 10/13/1994
• Issued: 09/12/1995
• Est. Priority Date: 10/13/1994
• Status: Expired due to Term

• Current Assignee: Furukawa Electric North America Incorporated (Furukawa Electric Company Limited)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Cobb, Gary S., Porteous, Daniel A., Burek, Denis E., Mock, George E.
• Primary Examiner(s): Bovernick, Rodney B.
• Assistant Examiner(s): Wise, Robert E.
• Application Number:
  US08/322,832
• Time in Patent Office: 334 Days
• Field of Search: 385/53, 385/134, 385/135, 385/137, 385/138
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4447 with divided shells G02B6/4448 takes precedence
• CPC Class Codes: G02B 6/4454 with splices

Abstract

A splice closure for optical fiber cables has an outer two pan shell, an interior longitudinally extending spine member held within the shell and cable sheath gripping members mounted on the ends of the spine member. A splice tray is removably mounted on the spine member intermediate its ends, and a plurality of splice holders are stacked on the splice tray. Each splice holder has grooves for containing the individual splices and means for affixing the individual splices to the holder. A splice tray cover contains means for applying compressive force to the stack of holders to hold them in place on the splice tray.

Claims

1. An optical fiber cable splice closure comprising:

first and second cover members having apertured end walls and adapted to fit together to form a protective shell having a longitudinal axis;

a rigid elongated spine member having at least one end thereof a cable sheath gripping member affixed thereto;

means within said cover members for positioning said gripping members and said spine member oriented parallel to the axis of said shell to prevent longitudinal movement thereof;

sealing means located between at least one end of said spine member and an adjacent end wall through which cable to be spliced passes;

an elongated substantially planar splice tray member removably mounted on said spine member parallel thereto, said splice tray member having means for routing fibers to be spliced and/or storing excess fiber length;

splice holding means mounted on said splice tray member and oriented at an angle to said longitudinal axis of said shell, said splice holding means comprising a plurality of splice holders stacked together one on top of another, said splice tray member having means defining a space for said splice holding means and for preventing lateral movement of the splice holding means relative to said splice tray member; and

splice tray cover means removably mounted to said splice tray member, said cover means having a recessed portion therein overlaying said stacked splice holders, and means within said recess for applying pressure to said stacked splice holders in a direction substantially perpendicular to the plane of said splice tray member.

2. An optical fiber cable splice closure as claimed in claim 1 wherein said elongated spine member has a cable sheath gripping member affixed to each end thereof.

3. An optical fiber cable splice closure as claimed in claim 2 wherein said means within said cover member for positioning said gripping member includes means adjacent each of said end walls for containing and holding said gripping members.

4. An optical fiber means as claimed in claim 1 wherein said sealing means comprises a resilient grommet member having at least one hole extending therethrough and a web member blocking said hole.

5. An optical fiber cable splice closure claimed in claim 1 wherein each of said splice holders comprises a substantially H-shaped member having first and second legs and a cross piece joining said legs.

6. An optical fiber cable splice closure as claimed in claim 5 wherein said cross piece has a plurality of splice holding grooves formed thereon.

7. An optical fiber cable splice closure as claimed in claim 6 wherein said grooves are in first and second spaced sets of grooves.

8. An optical fiber cable splice closure as claimed in claim 7 and further including adhesive material in the space between said first and second sets of grooves.

9. An optical fiber cable splice closure as claimed in claim 5 wherein said first and second legs each have first and second longitudinally extending edges, said first edges of said first one of said legs having a plurality of upwardly extending tabs spaced along the length thereof.

10. An optical fiber cable splice closure as claimed in claim 9 wherein said second edge of said first one of said legs has a plurality of recesses spaced along the length thereof.

11. An optical fiber cable splice closure as claimed in claim 10 wherein each of said recesses in said second edge is directly opposite a corresponding tab on said first edge.

12. An optical fiber cable splice closure as claimed in claim 11 wherein said second leg has a plurality of spaced tabs along the first edge thereof and a plurality of spaced recesses along the second edge thereof.

13. An optical fiber cable splice closure as claimed in claim 12 wherein said tabs on said first edge of said second leg are directly opposite corresponding recesses on said second edge of said second leg.

14. An optical fiber cable splice closure as claimed in claim 1 wherein said means for applying pressure to said stacked splice holders comprises a resilient member fitted in said recessed portion of said splice tray cover.

15. An optical fiber cable splice closure as claimed in claim 14 wherein said resilient material is ether based polyurethane foam.