Optical fiber guide for preventing sharp bends

• US 5,530,787 A
• Filed: 02/28/1995
• Issued: 06/25/1996
• Est. Priority Date: 02/28/1995
• Status: Expired due to Fees

• Current Assignee: Fitel USA Corporation (Furukawa Electric Company Limited)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Arnett, Jaime R.
• Primary Examiner(s): Healy, Brian
• Application Number:
  US08/395,737
• Time in Patent Office: 483 Days
• Field of Search: 385/60, 385/66, 385/69, 385/70, 385/76, 385/77, 385/78, 385/83, 385/84, 385/86, 385/87, 385/136, 385/137, 385/32, 385/59
• US Class Current: 385/137
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/4453 Cassettes
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps
• CPC Class Codes: G02B 6/4478 Bending relief means

Abstract

A curved guide for filamentary signal transmission media such as optical fibers has a curved surface with a radius of curvature greater than a critical radius. Fingers extending from the surface are designed to trap and hold fibers in close proximity to the surface, thus preventing too sharp bending of the fiber. At one end of the guide is a mounting member for mounting the guide to any one of a number of different fiber bearing components such as connectors and coupler holding adapter collars.

Claims

1. A guide for guiding a filamentary transmission medium including at least one optical fiber, said guide having a distal end and a proximal end, and further having

a curvilinear surface having a radius of curvature of approximately one and one-half inches;

holding means extending from said surface for holding the filamentary medium in proximity to said curvilinear surface; and

mounting means on said proximal end for mounting said guide to a filamentary medium bearing component.

2. A guide as claimed in claim 1 wherein the component is an optical fiber connector and said mounting means comprises a split sleeve adapted to be an interference fit on the optical fiber connector.

3. A guide as claimed in claim 1 wherein the component is an adapter collar for mounting on a panel and said mounting means comprises a locking member for the collar for locking the collar in place on the panel.

4. A guide as claimed in claim 1 wherein said holding means comprises a plurality of L-shaped fingers.

5. An optical fiber guide for preventing sharp bending and kinking of one or more optical fibers, said guide comprising:

an elongated curved support member having a curvilinear surface, distal and proximal ends and upper and lower edges;

a plurality of fiber holders extending from said surface for holding fibers in proximity to said surface, said fiber holders being arranged in spaced pairs arrayed along the length of said curvilinear surface; and

mounting means at the proximal end of said support member for mounting said guide to a component adapted to have one or more fibers extending therefrom, said mounting means having a fiber passageway for allowing fibers to pass therethrough.

6. An optical fiber guide as claimed in claim 5 wherein said curvilinear surface has a radius of curvature sufficient to prevent signal transmission degradation in the fiber.

7. An optical fiber guide as claimed in claim 6 wherein said radius of curvature is approximately one and one half inches.

8. An optical fiber guide as claimed in claim 5 wherein each of said fiber holders is an L-shaped member extending from said curvilinear surface.

9. An optical fiber guide as claimed in claim 8 wherein each of said pairs of fiber holders comprises a first L-shaped holder spaced from said first holder and opening toward said upper edge of said support member,

10. An optical fiber guide as claimed in claim 5 and further comprising an organizing post extending from said upper edge near said distal end of said support member.

11. An optical fiber guide as claimed in claim 10 and further comprising an organizing post extending from said lower edge near said distal end of said support member.

12. An optical fiber guide as claimed in claim 5 wherein said mounting means comprises a hollow sleeve member.

13. An optical fiber guide as claimed in claim 12 wherein said hollow sleeve member has a split portion extending along the length thereof.

14. An optical fiber guide as claimed in claim 5 wherein the component is an adapter collar for mounting on a patch panel and said mounting means comprises a locking member having means for attaching said locking member to the adapter collar.

15. An optical fiber guide as claimed in claim 14 wherein said locking member has a substantially U-shape with a first pair of arms forming one leg of the U-shape and a second pair of arms forming the other leg of the U-shape, each of the arms having a distal end.

16. An optical fiber guide as claimed in claim 15 wherein said means for attaching comprises a detent member on the distal end of each of the arms of said first pair of arms.

17. An optical fiber guide as claimed in claim 16 wherein said means for attaching further comprises a depending leg portion on each arm of said second pair of arms, each of said depending leg portions having an inwardly directed flange on the distal end thereof.

18. An optical fiber guide as claimed in claim 15 wherein the distal end of each arm of said second pair of arms has an enlarged portion adapted to be inserted into a portion of the component for locking the component to the patch panel.

19. An optical fiber guide for preventing sharp bending and kinking of one or more optical fibers, said guide comprising:

an elongated curved support member having a curvilinear surface, distal and proximal ends and upper and lower edges, said curvilinear surface having a radius of curvature of approximately one and one-half inches, that is sufficient to prevent signal transmission degradation in the fiber;

a plurality of fiber holders extending from said surface for holding fibers in proximity to said surface; and

mounting means at the proximal end of said support member for mounting said guide to a component adapted to have one or more fibers extending therefrom, said mounting means having a fiber passageway for allowing fibers to pass therethrough.

20. An optical fiber guide for preventing sharp bending and kinking of one or more optical fibers, said guide comprising:

an elongated curved support member having a curvilinear surface, distal and proximal ends and upper and lower edges;

an organizing post extending from said upper edge near said distal end of said support member;

a plurality of fiber holders extending from said surface for holding fibers in proximity to said surface; and

mounting means at the proximal end of said support member for mounting said guide to a component adapted to have one or more fibers extending therefrom, said mounting means having a fiber passageway for allowing fibers to pass therethrough.

21. An optical fiber guide as claimed in claim 20 and further comprising an organizing post extending from said lower edge near said distal end of said support member.

22. An optical fiber guide for preventing sharp bending and kinking of one or more optical fibers, said guide comprising:

an elongated curved support member having a curvilinear surface, distal and proximal ends and upper and lower edges;

a plurality of fiber holders extending from said surface for holding fibers in proximity to said surface; and

mounting means at the proximal end of said support member for mounting said guide to a component adapted to have one or more fibers extending therefrom, said mounting means having a fiber passageway for allowing fibers to pass therethrough, the component being an adapter collar for mounting on a patch panel, and said mounting means comprising a locking member having means for attaching said locking member to the adapter collar, said locking member having a substantially U-shape with a first pair of arms forming one leg of the U-shape and a second pair of arms forming the other leg of the U-shape, each of the arms having a distal end.

23. An optical fiber guide as claimed in claim 22 wherein said means for attaching comprises a detent member on the distal end of each of the arms of said first pair of arms.

24. An optical fiber guide as claimed in claim 23 wherein said means for attaching further comprises a depending leg portion on each arm of said second pair of arms, each of said depending leg portions having an inwardly directed flange on the distal end thereof.

25. An optical fiber guide as claimed in claim 22 wherein the distal end of each arm of said second pair of arms has an enlarged portion adapted to be inserted into a portion of the component for locking the component to the patch panel.

26. A guide for guiding an optical fiber which terminates in a connector, said guide having a distal end and a proximal end, and further having

a curvilinear surface having a radius of curvature;

holding means extending from said surface for holding the optical fiber in proximity to said curvilinear surface; and

a hollow section at the proximal end of the guide for surrounding the connector in a manner that secures the connector within the hollow section.