Wire pulling head apparatus with crimp zone indicators and method of using same

Patent metadata

Field	Value
Publication number	US-9923345-B2
Application number	US-201615359065-A
Country	US
Kind code	B2
Filing date	Nov 22, 2016
Priority date	Feb 29, 2012
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

An enhanced apparatus and method for securing a wire to a pulling cable for pulling wire. Specifically, the pulling cable and wire are attached via a pulling head body. The wire is inserted into an end of the pulling head body and secured by crimping the pulling head body against the wire. Further, crimp zone indicators positioned on the outer surface of the pulling head body indicate the optimal zone of crimping to achieve substantial contact between the pulling head body and the wire. A pulling cable is secured to the pulling head body via a ball swage that comprises a tapped surface.

First claim

What is claimed is:

1. A pulling head body for pulling wire, the pulling head body comprising:
a first end and a second end;
a longitudinal bore extending from the first end to the second end;
wherein a pulling cable is inserted into the first end of the pulling head body through the first end bore; and
wherein the pulling cable is secured to the pulling head body via a ball swage comprising a tapped ball swage neck.

2. The pulling head body of claim 1 further comprising one or more crimp zone indicators, wherein the crimp zone indicators are positioned on an outer surface of the tapped ball swage neck.

3. The pulling head body of claim 1 , wherein the pulling head body comprises a first end bore and a second end bore.

4. The pulling head body of claim 3 , wherein the wire is inserted into the second end of the pulling head body through the second end bore.

5. The pulling head body of claim 3 , wherein the first end bore and second end bore have different diameters.

6. The pulling head body of claim 5 , wherein the second end bore diameter is greater than the first end bore diameter.

7. The pulling head body of claim 6 , wherein the ball swage diameter is greater than the first end bore diameter and less than the second end bore diameter.

8. The pulling head body of claim 3 , wherein the second end bore diameter tapers down to the first end bore diameter where the first end and second end connect.

9. The pulling head body of claim 1 , wherein the tapped ball swage neck is crimped to an end of the pulling cable.

10. The pulling head body of claim 1 , wherein the first end is a tapered end.

11. The pulling head body of claim 1 , wherein the tapped ball swage neck is a spiral groove tapped ball swage neck.

12. A ball swage pulling system, the ball swage pulling system comprising:
at least one pulling cable, the at least one pulling cable having a pulling end and an attachment end; and
a pulling head body, the pulling head body comprising
a first end and a second end;
a longitudinal bore extending from the first end to the second end;

wherein the attachment end of the at least one pulling cable is inserted into the first end of the pulling head body through the first end bore; and
wherein the attachment end of the at least one pulling cable is secured to the pulling head body via a ball swage comprising a tapped ball swage neck.

13. The ball swage pulling system of claim 12 , wherein the at least one pulling cable comprises at least two pulling cables.

14. The ball swage pulling system of claim 13 , wherein the pulling head body comprises at least two pulling head bodies.

15. The ball swage pulling system of claim 14 , wherein a first pulling cable is inserted into the first end of a first pulling head body and the second pulling cable is inserted into the first end of a second pulling head body.

16. The ball swage pulling system of claim 15 , wherein the attachment end of the first pulling cable is secured to a first pulling head body via a ball swage comprising a tapped ball swage neck and wherein the attachment end of the second pulling cable is secured to a second pulling head body via a ball swage comprising a tapped ball swage neck.

17. The ball swage pulling system of claim 16 , wherein the tapped ball swage neck comprises crimp zone indicators.

18. The ball swage pulling system of claim 13 , wherein the pulling end of the first pulling cable is secured to the pulling end of the second pulling cable.

19. The pulling head body of claim 1 , wherein the tapped ball swage neck is crimped to an end of the pulling cable.

Assignees

• Encore Wire Corp

Inventors

• Bennett Mark D
• Bigbee Jr William T

Classifications

• H02G1/081 Primary

  using pulling means at cable ends, e.g. pulling eyes or anchors · CPC title

• H02G1/08

  through tubing or conduit, e.g. rod or draw wire for pushing or pulling {(inserting electrical cables into tubes using wallbores E21B17/206; for optical cables G02B6/4401)} · CPC title

• H02G3/00

  Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles (installations of bus-bars H02G5/00; overhead installations H02G7/00; installations in or on the ground H02G9/00) · CPC title