Patch cord

• US 5,305,405 A
• Filed: 02/25/1993
• Issued: 04/19/1994
• Est. Priority Date: 02/25/1993
• Status: Expired due to Term

• Current Assignee: Commscope Emea Limited (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Lu, Liang-Ju, Conroy, James W., Emmons, David J., Pfeffer, George B.
• Primary Examiner(s): Bovernick, Rodney B.
• Assistant Examiner(s): NGO, HUNG NHAT
• Application Number:
  US08/017,156
• Time in Patent Office: 418 Days
• Field of Search: 385/76, 385/902, 385/100, 385/901, 385/73, 385/101, 385/53, 385/115, 385/117, 385/102, 385/103, 385/134, 385/147
• US Class Current: 385/73
• CPC Class Codes: G02B 6/2817 using reflective elements to split or combine optical signals
• CPC Class Codes: G02B 6/2852 using tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)
• CPC Class Codes: G02B 6/424 Mounting of the optical light guide
• CPC Class Codes: G02B 6/4287 Optical modules with tapping or launching means through the surface of the waveguide G02B6/2852, G02B6/4286 take precedence
• CPC Class Codes: Y10S 385/901 Illuminating or display apparatus

Abstract

A patch cord includes a cable having a primary transmission member contained within a protective sheathing. An energy transmission member is carried on the cable and extends from a first end to a second end. First and second couplings are connected to the first and second ends of the energy transmission member. The first coupling receives energy from an external source and transmits the energy along the energy transmission member toward the second coupling. The second coupling receives energy from the energy transmission member and generates a visible signal in response to the received energy.

Claims

1. A patch cord comprising:

a cable having a primary transmission member for carrying a primary signal, said cable extending from a first cable end to a second cable end;

secondary transmission means for carrying a tracing signal and secured to said cable for movement therewith and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end for connection of said first end to a first telecommunications equipment;

a second connector secured to a second end of said primary transmission member at said second cable end for connection of said second end to a second telecommunications equipment;

first means carried on said cable for movement therewith upon disconnection of said first and second connections from said first and second telecommunications equipment, respectively, and connected to said second end of said secondary transmission means for receiving said energy from said secondary transmission means and generating a sensible signal in response to receiving said energy;

whereby said tracing signal is transmitted along said secondary energy transmission means from said first means and generates said sensible signal at said second means to permit tracing of said cable.

2. A patch cord according to claim 1 comprising first and second couplings connected to said first and second ends, respectively, of said secondary transmission means with each of said first and second couplings, including respective ones of said first means and each includes respective ones of said second means.

3. A patch cord according to claim 2 wherein said first coupling includes at least a first light transmitting portion disposed to receive light from an external source and direct said light into said optical waveguide.

4. A patch cord according to claim 2 wherein said second coupling includes at least a second light transmitting portion disposed to receive light from said optical waveguide.

5. A patch cord according to claim 4 wherein said second coupling further includes a surface to direct light received from said optical waveguide.

6. A patch cord according to claim 2 wherein said secondary transmission means is an optical waveguide.

7. A patch cord according to claim 6 wherein said first coupling includes at least a light transmitting portion disposed to receive light from an external source and direct light into said optical waveguide.

8. A patch cord according to claim 6 wherein said second coupling includes at least a first light transmitting portion disposed to receive light from said optical waveguide.

9. A patch cord according to claim 8 wherein said second coupling further includes a surface to direct light received from said optical waveguide.

10. A patch cord according to claim 1 wherein said secondary transmission means is an optical waveguide.

11. A patch cord according to claim 10 wherein said optical waveguide is secured to said sheath.

12. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy;

first and second couplings connected to said first and second ends, respectively, of said energy transmission means with each of said first and second couplings, including respective ones of said first means and each includes respective ones of said second means;

said second coupling including at least a second light transmitting portion disposed to receive light from said optical waveguide;

said second coupling further including a surface to direct light received from said optical waveguide; and

said second light transmitting portion including an annular ring with said surface carried on said ring and disposed to direct light into said ring to illuminate said ring.

13. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy;

first and second couplings connected to said first and second ends, respectively, of said energy transmission means with each of said first and second couplings, including respective ones of said first means and each includes respective ones of said second means;

said energy transmission means is an optical waveguide;

said second coupling includes at least a first light transmitting portion disposed to receive light from said optical waveguide; and

said light transmitting portion including an annular ring with said surface disposed to direct light into said ring to illuminate said ring.

14. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy;

first and second couplings connected to said first and second ends, respectively, of said energy transmission means with each of said first and second couplings, including respective ones of said first means and each includes respective ones of said second means; and

a clip having means for releasably connecting said clip to said first coupling;

at least a first source optical fiber carried by said clip and connected to a light source;

said first source optical fiber having a light transmitting end disposed to be optically coupled with said second means of said coupling.

15. A patch cord according to claim 14 wherein said clip includes at least a transparent portion including said light receiving surface, said transparent portion further including a light emitting surface optically coupled with said first means.

16. A patch cord according to claim 15 wherein said clip includes a reflective surface disposed between said light transmitting end of said first source optical fiber and said lighting emitting surface for light from said fiber to reflect off said reflective surface and through said light emitting surface, said clip and said coupling mutually sized for said clip to be secured to said coupling with said light emitting surface opposing a light receiving surface of said second coupling with said second coupling having a reflective surface for directing light from said light receiving surface toward said energy transmission means.

17. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy;

first and second couplings connected to said first and second ends, respectively, of said energy transmission means with each of said first and second couplings, including respective ones of said first means and each includes respective ones of said second means; and

each of said first and second couplings including light transparent material with said first and second ends secured to each of said first and second couplings, respectively, with each of said first and second couplings having a light transparent surface optically coupled to said first and second ends, respectively, each of said couplings further having a second light transparent surface, each of said couplings having a light reflective surface disposed between said first and second light transparent surfaces, respectively.

18. A patch cord according to claim 17 comprising a clip having means for securing said clip to either of said first and second couplings, respectively, said clip including first and second light transmission surfaces, said first light transmission surface optically coupled to said light transmission surfaces of said coupling when said clip is secured to said coupling, an optical fiber carried by said clip and having a light transmitting end optically coupled with said second transmission surface, said clip having reflective surfaces for reflecting light within said clip between said first and second transmission surfaces.

19. A patch cord according to claim 18 comprising an energy source, means for releasably securing said clip to said first said coupling with said energy source connected to said first means for receiving energy from an external source.

20. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy; and

said second means includes at least one attenuation point disposed on said energy transmission means to emit at least a portion of said energy as said visible signal in response to energy carried by said energy transmission means.

21. A patch cord according to claim 20 wherein said energy transmission means is an optical fiber and said attenuation point is a notch formed in said fiber having a reflective surface to reflect light from said fiber to an exterior of said fiber.

22. A patch cord according to claim 21 comprising a plurality of said notches formed along a length of said fiber.

23. A patch cord comprising:

a cable having a primary transmission member and a protective sheathing, said cable extending from a first cable end to a second cable end;

energy transmission means carried on said cable and extending from a first end proximate said first cable end to a second end proximate said second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end;

a second connector secured to a second end of said primary transmission member at said second cable end;

first means connected to said first end of said energy transmission means for receiving energy from an external source and transmitting said energy along said energy transmission means;

second means connected to said second end of said energy transmission means for receiving said energy from said energy transmission means and generating a visible signal in response to receiving said energy; and

said energy transmission means is an optical fiber and said first means includes a plurality of reflective surfaces formed on said fiber and disposed to receive light from an external source and reflect said light into said fiber.

24. A patch cord for interconnecting a first telecommunications equipment and a second telecommunication equipment, said patch cord comprising:

a cable having a primary transmission member for carrying a primary signal, said cable extending from a first cable end to a second cable end;

a first connector secured to a first end of said primary transmission member at said first cable end for connecting said first end of said primary transmission member to said first telecommunication equipment;

a second connector secured to a second end of said primary transmission member at said second cable end for connecting said second end of said primary transmission member to said second telecommunications equipment;

first signal receiving means carried on said cable proximate said first cable end for receiving a tracing signal from an external source with said first signal receiving means secured to said cable for movement therewith upon disconnection of said first and second connectors from said first and second telecommunications equipment, respectively; and

first signal emitting means carried on said cable for movement therewith proximate said second cable end and connected to said first signal receiving means for emitting a perceptible signal upon receipt of said tracing signal by said first signal receiving means from said external source.

25. A patch cord according to claim 24 comprising second signal receiving means carried on said cable proximate said second cable end for receiving a signal from an external source with said second signal receiving means secured to said cable for movement therewith upon disconnection of said first and second connectors from said first and second telecommunications equipment, respectively, and

second signal emitting means carried on said cable proximate said first end and connected to said second signal receiving means for emitting a perceptible signal upon receipt of said signal by said second signal receiving means from said external source.

26. A patch cord according to claim 25 comprising a first racer component which includes said first signal receiving means and said second signal emitting means and a second tracer component which includes said second signal receiving means and said first signal emitting means.

27. A traceable signal transmission member for interconnecting a first telecommunications equipment with a second telecommunications equipment, said member comprising:

a primary signal carrier extending from a first end to a second end for transmission of a primary telecommunications signal from said first end to said second end;

a first connector secured to said first end for releasably connecting said first end to said first telecommunications equipment;

a second connector secured to said second end for releasably connecting said second end to said second telecommunications equipment;

a secondary signal carrier for transmission of a secondary signal and attached to said primary signal carrier for movement therewith upon disconnection of said first and second connectors from said first and second telecommunications equipment, respectively;

signal generating means connected to said secondary signal carrier for generating a tracing signal and transmitting said tracing signal along said secondary signal carrier, said signal generating means secured to said primary signal carrier for movement therewith upon disconnection of said first and second connectors from said first and second telecommunications equipment, respectively; and

signal emitting means connected to said secondary signal carrier for receiving said tracing signal from said secondary signal carrier and generating an operator discernable signal in response to said tracing signal, said signal emitting means secured to said primary signal carrier for movement therewith upon disconnection of said first and second connectors from said first and second telecommunication equipment, respectively.

28. A signal transmission member according to claim 27 wherein said signal generating means includes means for receiving a signal from an external source and generating said tracing signal in response thereto.

29. A signal transmission member according to claim 27 wherein said signal emitting means includes means for generating a tracing signal and transmitting said tracing signal along said secondary signal carrier and wherein said signal generating means includes means for receiving, from said secondary signal carrier, said signal generated by said signal emitting means and generating an operator discernable signal in response thereto.