Thermal expansion and contraction system

Patent metadata

Field	Value
Publication number	US-9810021-B2
Application number	US-201514716426-A
Country	US
Kind code	B2
Filing date	May 19, 2015
Priority date	May 30, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A thermal expansion and contraction system secures cables to a ladder rung. The thermal expansion and contraction system includes a cable grip secured to the ladder rung. The cable grip includes a protective grommet for holding cables to the ladder rung, a metal plate and wire forms to secure the protective grommet to the metal plate. The thermal expansion and contraction system also includes a cable divider secured to the ladder rung to maintaining separation of cables and a cable containment clamp secured to the ladder rung.

First claim

The invention claimed is:

1. A thermal expansion and contraction system for securing cables to a ladder rung, the thermal expansion and contraction system comprising:
at least one cable grip secured to the ladder rung, the at least one cable grip including a protective grommet for holding the cables to the ladder rung, a metal plate and wire forms for securing the protective grommet to the metal plate;
wherein the metal plate includes a main body with downwardly extending sides and a plurality of slots extending through the downwardly extending sides.

2. The thermal expansion and contraction system of claim 1 , wherein the protective grommet includes two identical grommets positioned adjacent each other.

3. The thermal expansion and contraction system of claim 1 , wherein the protective grommet having a top member and side members, wherein the top member having a channel for receiving a wire form, and wherein the side members having a number of projections, the projections define channels for maintaining the wire form when the cable grip is installed on the ladder rung.

4. The thermal expansion and contraction system of claim 1 , wherein the protective grommet having an outer surface and a serrated inner surface for providing resistance to cable movement.

5. The thermal expansion and contraction system of claim 1 , wherein the metal plate further comprising a hole located at one corner of the metal plate.

6. The thermal expansion and contraction system of claim 5 , wherein the cable grip is a single position cable grip, wherein one leg of one of the wire forms is installed in the hole in the corner of the metal plate.

7. The thermal expansion and contraction system of claim 1 , wherein the cable grip is a multiple position cable grip, wherein the wire forms are installed in the slots in the metal plate.

8. The thermal expansion and contraction system of claim 1 , wherein the metal plate further comprising curved ends.

9. The thermal expansion and contraction system of claim 1 , wherein the metal plate further comprising at least one fastener positioned therein for securing the cable grip to the ladder rung.

10. The thermal expansion and contraction system of claim 1 , wherein the wire forms are generally U-shaped with two parallel legs and two outwardly extending feet.

11. The thermal expansion and contraction system of claim 1 , further comprising at least one cable divider secured to the ladder rung for maintaining separation of cables in the thermal expansion and contraction system.

12. The thermal expansion and contraction system of claim 11 , wherein the at least one cable divider is positioned over the ladder rung to create a slightly elevated cable path thereby creating a natural bend point to allow the cables to move during thermal expansion.

13. The thermal expansion and contraction system of claim 11 , wherein the at least one cable divider having a C-shaped bracket with a main member, side members and curved ends.

14. The thermal expansion and contraction system of claim 1 , further comprising at least one cable containment clamp secured to the ladder rung, whereby the at least one cable containment clamp holds the cables to the ladder rung while enabling movement in a vertical direction.

15. The thermal expansion and contraction system of claim 14 , wherein the cable containment clamp includes a protective grommet, a wire form and a spacer.

16. The thermal expansion and contraction system of claim 15 , wherein the protective grommet includes a top member with a channel for receiving the wire form and sides with projections defining a channel for receiving the wire form.

17. The thermal expansion and contraction system of claim 15 , wherein the wire form having two legs with parallel portions, angled offset portions, hook latches and two distal ends.

18. The thermal expansion and contraction system of claim 15 , wherein the spacer having a rectangular body and stops, the stops secure the spacer to the wire form.

19. The thermal expansion and contraction system of claim 15 , wherein the cable containment clamp further comprising a cam lever for installing the wire form over the protective grommet, wherein the cam lever including a center opening for receiving the wire form and a wedge shaped bottom for engaging a channel in a top of the protective grommet.

20. A thermal expansion and contraction system for securing cables to a ladder rung, the thermal expansion and contraction system comprising:
at least one cable grip secured to the ladder rung, the at least one cable grip including a protective grommet for holding the cables to the ladder rung, a metal plate and wire forms for securing the protective grommet to the metal plate, and
at least one cable divider secured to the ladder rung for maintaining separation of cables in the thermal expansion and contraction system, wherein the at least one cable divider having a C-shaped bracket with a main member, side members and curved ends;
wherein the at least one cable divider having a plurality of spacer mounts and cable spacers mounted to and extending from the C-shaped bracket.

21. The thermal expansion and contraction system of claim 20 , wherein the cable spacers have a curved outer surface and an opening therethrough; wherein the spacer mounts are inserted through holes in the C-shaped bracket and mounted in the openings in the cable spacers.

22. The thermal expansion and contraction system of claim 20 , wherein the spacer mounts are secured to elevation blocks, wherein the elevation blocks are positioned under the C-shaped bracket for elevating the cable divider when installed on the ladder rung.

23. A thermal expansion and contraction system for securing cables to a ladder rung, the thermal expansion and contraction system comprising:
at least one cable grip secured to the ladder rung, the at least one cable grip including a protective grommet for holding the cables to the ladder rung, a metal plate and wire forms for securing the protective grommet to the metal plate;
at least one cable containment clamp secured to the ladder rung, wherein the cable containment clamp includes a protective grommet, a wire form and a spacer, whereby the at least one cable containment clamp holds the cables to the ladder rung while enabling movement in a vertical direction; and
wherein the cable containment clamp is a single position cable containment clamp with a spacer installed on the leg of each wire form, whereby the spacer is perpendicular to the ladder rung.

24. A thermal expansion and contraction system for securing cables to a ladder rung, the thermal expansion and contraction system comprising:
at least one cable grip secured to the ladder rung, the at least one cable grip including a protective grommet for holding the cables to the ladder rung, a metal plate and wire forms for securing the protective grommet to the metal plate;
at least one cable containment clamp secured to the ladder rung, wherein the cable containment clamp includes a protective grommet, a wire form and a spacer, whereby the at least one cable containment clamp holds the cables to the ladder rung while enabling movement in a vertical direction; and
wherein the cable containment clamp is a multiple position cable containment clamp with spacers installed on the legs of adjacent wire forms, whereby each spacer is parallel to the ladder rung.

Assignees

• Sylvester David J
• Rouleau Rodney G
• Ramey Samuel C
• Brouwer Shaun P
• Benedict Scott K
• Panduit Corp

Inventors

• Sylvester David J
• Rouleau Rodney G
• Ramey Samuel C
• Brouwer Shaun P
• Benedict Scott K

Classifications

• H02G3/0456

  Ladders or other supports · CPC title

• H02G3/32

  using mounting clamps · CPC title

• E06C7/14 Primary

  Holders for pails or other equipment on or for ladders · CPC title