Cable clamp with integrated trace and bond capability

• US 7,603,020 B1
• Filed: 05/27/2008
• Issued: 10/13/2009
• Est. Priority Date: 05/27/2008
• Status: Active Grant

• Current Assignee: Vertiv Corporation (Vertiv Holdings Co.)
• Original Assignee: Emerson Network Power Energy Systems North America Incorporated (Emerson Electric Company)
• Inventors: Leon, Eduardo, Wakileh, George I., Chen, Simon Shen-Meng, Maloney, Jerome A.
• Primary Examiner(s): KIM, ELLEN E
• Application Number:
  US12/127,312
• Time in Patent Office: 504 Days
• Field of Search: 385133-137
• US Class Current: 385/136
• CPC Class Codes: G02B 6/4477 with means for strain-relieving to interior strengths element
• CPC Class Codes: G02B 6/44785 Cable clamps

Abstract

A fiber optic cable clamp module is disclosed. The clamp module includes a conductive contact for terminating a tracer wire. The clamp module retains the fiber optic cable and provides a weather tight seal around the cable. A carrier for a fiber optic cable clamp module is also disclosed. The carrier provides a connection to ground for a tracer wire when a clamp module containing the tracer wire is installed in the carrier. The carrier also has a switch for disconnecting the tracer wire from ground without physically removing the tracer wire. A method for installing fiber optic cable using a clamping module is also disclosed.

Claims

1. A fiber optic cable clamp module comprising an enclosure having an opening, the enclosure including a cover coupled to the enclosure for selectively covering the opening and a conductive contact including an interior portion inside the enclosure for connection to a tracer wire attached to a fiber optic cable and an external portion at least partially outside the enclosure electrically connected to the interior portion, the conductive contact allowing an electrical connection to the tracer wire to be made through the external portion while the cover is closed and the tracer wire is connected to the interior portion, the enclosure configured to receive a jacketed portion of a fiber optic cable including a strength member into the enclosure and permit a buffer tube from the fiber optic cable to exit the enclosure when the fiber optic cable is present, the enclosure and the cover configured to cooperatively clamp the strength member within the housing when the fiber optic cable is received within the housing and the cover is covering the opening.

2. The clamp module of claim 1 wherein the conductive contact includes an insulation displacement contact.

3. The clamp module of claim 1 wherein the conductive contact includes at least one v-shaped terminal, the v-shaped terminal configured to receive and retain the tracer wire.

4. The clamp module of claim 1 further comprising a retaining rib positioned on the cover to prevent separation of the tracer wire from the conductive contact when the cover is in a closed position.

5. The clamp module of claim 1 wherein the enclosure includes a snap lock closure for holding the cover in a closed position.

6. The clamp module of claim 1 further comprising at least one snap catch for securing the clamp module in a carrier for a fiber optic clamp assembly.

7. The clamp module of claim 1 wherein the conductive contact is configured to connect the tracer wire to ground when the clamp module is mounted in a carrier for a fiber optic clamp assembly.

8. The clamp module of claim 1 further including a fiber optic cable having an outer jacket, a buffer tube, at least one strength member, the fiber optic cable mounted in the clamp module, a jacketed portion of the fiber optic cable including the strength member clamped in the enclosure, the buffer tube passing out of the clamp, and the tracer wire connected to the conductive contact.

9. The clamp module of claim 1 wherein the enclosure is configured to bias a fiber optic cable tracer wire to a ground terminal when a fiber optic cable is mounted in the clamp module and the cover is in a closed position.

10. A fiber optic cable assembly, the assembly comprising at least one fiber optic cable module for holding a fiber optic cable having a tracer wire, the cable module including a conductive contact having an interior portion within the cable module for electrical connection to the tracer wire and an exterior portion at least partially outside the cable module electrically connected to the interior portion, and a carrier for receiving the cable module, the carrier including a switch for selectively electrically connecting the tracer wire through the conductive contact to a ground when the cable module is received in the carrier and a tracer wire is so connected.

11. The assembly of claim 10 wherein the carrier further comprises a test terminal, the test terminal for connecting to the tracer wire through the conductive contact when a tracer wire is so connected.

12. The assembly of claim 10 wherein the assembly provides a seal around a fiber optic cable when a fiber optic cable is connected to the assembly.

13. The assembly of claim 10 further comprising a clamp for holding a fiber optic cable when a fiber optic cable is connected to the assembly.

14. A carrier for a fiber optic cable clamp assembly, the carrier comprising a plurality of bays, each bay including a first contact, each bay configured to receive a fiber optic cable clamp module holding a fiber optic cable having a tracer wire connected to a second contact, the second contact including an interior portion to which the tracer wire is connected inside the clamp module and an exterior portion at least partially outside the clamp module electrically connected to the interior portion, and the first contact for electrically connecting the tracer wire through the second contact to a grounding point when the clamp module is received in the bay.

15. The carrier of claim 14 further comprising a switch for selectively connecting the grounding point to a ground when the carrier is positioned in proximity to the ground.

16. The carrier of claim 14 further comprising a test terminal connected to the first contact.

17. A method of installing a fiber optic cable, the method comprising clamping a fiber optic cable in a clamping module and inserting the clamping module into a carrier, the carrier mounted in a telecommunications enclosure, the clamping module including an enclosure having an opening, a cover coupled to the enclosure for selectively covering the opening and a conductive contact for connection to a tracer wire of a fiber optic cable, the opening and the cover configured to cooperatively clamp a strength member of the fiber optic cable when the cover is covering the opening, the conductive contact including an interior portion inside the enclosure for connection to the tracer wire and an external portion at least partially outside the enclosure electrically connected to the interior portion.

18. The method of claim 17 wherein clamping the cable includes connecting a tracer wire of the fiber optic cable to the conductive contact.

19. The method of claim 18 wherein inserting the clamping module connects the tracer wire to a ground through the conductive contact.

20. The method of claim 19 wherein the carrier includes a switch for disconnecting the tracer wire from the ground.

21. The method of claim 18 wherein inserting the clamping module electrically connects the tracer wire to a test terminal on the carrier.