Optic cable exit trough with bypass
A cable trough is provided including a bottom portion and two upstanding sides extending from the bottom portion to define a cable pathway. The upstanding sides define an enlarged central portion of the cable trough, and the bottom portion including at least one exit trough portion. The exit trough portion can be centrally located, with a bypass pathway on either side. At least one separator wall is provided to separate the exit trough portion from each bypass pathway. A component flange is also provided extending from one of the upstanding sides. The cable trough can also include a cable storage pathway. Alternatively, two exit trough portions can be positioned on opposite sides of the cable trough adjacent each upstanding side, and on opposite sides of a central bypass pathway.
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The invention pertains to a system for the management and routing of optical fiber cables.
BACKGROUND OF THE INVENTIONIn the telecommunications industry, the use of optical fibers for signal transmissions is accelerating. With the increased utilization of optical fiber systems, optical fiber cable management requires industry attention.
One area where optical fiber management is necessary is the routing of optical fibers from one piece of optical fiber equipment to another. For example, in a telecommunications facility, optical fiber cables may be routed between fiber distribution equipment and optical line terminating equipment. In buildings and other structures which carry such equipment, the cable routing can take place in concealed ceiling areas or in any other manner to route cables from one location to another.
When routing optical fibers, it is desirable to have at least one cable extend generally horizontally through a lateral trough section of a cable routing system, and to also have the capability to exit one or more cables from the lateral trough section. Also, there is a need to provide storage in connection with lateral trough sections. A further need is for storage of cable components, such as connectors within the cable routing system. Also, and perhaps most important, any routing system must protect optical fibers from damage. In the use of optical fibers, it is recognized that the fibers should not be bent beyond a minimum radius of curvature. For example, it is commonly recognized that optical fibers should not be bent in a radius of less than 1.5 inches.
In some cable routing systems, copper cables may extend coextensively with the optical fiber cables. There is a need to manage these two different cables in the cable routing system.
SUMMARY OF THE INVENTIONAccording to preferred embodiments of the present invention, a cable trough is disclosed for routing optical fiber or other cables between transmission equipment. The trough includes two upstanding sides and a bottom. In one embodiment, the cable trough includes an enlarged central portion defining a downwardly extending central exit trough portion, and two cable bypass portions on opposite sides of the central trough portion. Separator walls extend upwardly within the cable trough to separate the bypass portions from the central exit trough portion. At least one cable storage wall may be positioned in the cable trough between the central exit trough portion and one of the upstanding sides to define a cable storage pathway. A component support flange may be provided and extends inwardly from one of the sides of the cable trough. The flange supports a component for connecting to one of the optical fiber cables. An alternative embodiment of a cable trough includes an enlarged central portion defining a central bypass portion, and two downwardly extending exit trough portions disposed on opposite sides of the central bypass portion. Separator walls extend upwardly within the cable trough to separate the central bypass trough portion from the exit trough portions.
Referring now to
Cable troughs 100, 200, 300 are related in that each provides a cable exit portion which allows downward exiting of a cable from the trough, as well as a cable bypass portion which allows other cables to bypass the downward exit portion.
Referring now to
Ends 102 and 104 are connectable to other cable routing components, such as horizontal trough section, as desired through any suitable means, such as those structures disclosed in U.S. Pat. Nos. 5,067,678 and 5,316,243, or the structures disclosed in pending application 08/818,492, the disclosure of which is incorporated by reference. The inside and/or outside surfaces of trough 100 can be configured as appropriate to mate with the other cable routing components.
Referring now to
Referring now to
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Referring now to
Exit trough 200 further includes a cable storage feature including upwardly extending storage walls 230, 231, 232, and 233. Storage walls 230-233 define a cable storage pathway 234 around exit trough portion 220 and inside of separator walls 222, 224. In the case of cable 252 passing through trough 200 from cable pathway 203 and into an area between separator walls 222, 224. Cable 252 is wound around storage walls 230-233 ants number of times as desired, then passes through gap 236, and then exits trough 200 at exit trough portion 220. Storage walls 230, 232 are generally oval-shaped, and storage walls 231, 233 are smaller wall segments each with a slight outward curvature toward storage pathway 234. Other storage walls 230-233 are possible including more or less than the number shown, and in different positions. Generally it is desirable to provide sufficient structure to position all of the cables desiring storage within the storage pathway 234, without going below the minimum bending radius of the cable. Instead of exiting trough 200 at exit trough portion 220, cable 252 can pass through to pathway 205.
Referring now to
Cables can pass through trough 300 from end 302 to end 304 through central bypass pathway 314, or one or more cables can exit downwardly through one of exit trough portions 316, 318. The enlarged central portion 312 helps avoid overly compacting the cables which bypass through trough 300, and do not exit through exit portions 316, 318.
While troughs 100, 200, 300 are usable with optical fiber cables, copper cables may also be routed through troughs 100, 200, 300 simultaneously with the optical fiber cables. In that case the dual bypass pathways of troughs 100, 200, and the dual exit trough portions 316, 318 of trough 300 can be used to segregate the cables, as desired.
Having described the present invention in a preferred embodiment, modifications and equivalents may occur to one skilled in the art. It is intended that such modifications and equivalents shall be included within the scope of the claims which are appended hereto.
Claims
1. A cable trough comprising:
- a bottom portion;
- two upstanding sides extending from the bottom portion to define a cable pathway;
- the cable trough having first and second opposed ends and a central portion disposed therebetween, the upstanding sides spaced further apart from each other in the central portion than on each end to define an enlarged central portion of the cable trough;
- the enlarged central portion of the cable trough including a downwardly extending, central exit trough portion through the bottom portion;
- two upstanding separator walls extending upwardly from the bottom portion, each separator wall positioned on opposite sides of the central exit trough portion, each separator wall laterally spaced from the respective sides to each define a cable bypass pathway between the first and second ends.
2. The cable trough of claim 1, further comprising at least one upwardly extending cable storage wall adjacent to the exit trough portion defining a cable storage pathway between the cable storage wall and at least one of the separator walls.
3. The cable trough of claim 1, further comprising a component support flange extending inwardly from one of the upstanding sides in a direction toward the other side, and an optical fiber cable component mounted to the component support flange.
4. A cable trough comprising:
- a bottom portion;
- two upstanding sides extending from the bottom portion to define a cable pathway;
- the cable trough having first and second opposed ends and a central portion disposed therebetween, the upstanding sides spaced further apart from each other in the central portion than on each end to define an enlarged central portion of the cable trough;
- the enlarged central portion of the cable trough including two downwardly extending side exit trough portions through the bottom portion;
- two upstanding separator walls extending upwardly from the bottom portion, one separator wall positioned adjacent to each exit trough portion, each separator wall positioned on opposite sides of the bottom portion, each separator wall laterally spaced from each other to each define a central cable bypass pathway between the first and second ends.
5. A cable trough comprising:
- a cable pathway structure including a bottom portion and two upstanding sides extending from the bottom portion to define a cable pathway, the cable pathway structure further including a first open end, a second opposite open end, and a central portion disposed therebetween, the first and second opposite open ends each defining a mating U-shaped trough section configured to mate with other horizontal trough sections;
- a component support flange extending from one of the upstanding sides; and
- an optical fiber cable component mounted to the component support flange.
6. The cable trough of claim 5 wherein the optical fiber cable component is selected from a group consisting of connectors, adapters, splitters/combiners, attenuators, splicings, switches, wave division multiplexers, and amplifiers.
7. The cable trough of claim 5 wherein the component support flange extends inwardly from one of the upstanding sides in a direction toward the other side.
8. A cable trough comprising:
- a cable pathway structure including a bottom portion and two upstanding sides extending from the bottom portion to define a cable pathway, the cable pathway structure including a first open end, a second opposite open end, and a central portion disposed therebetween, the first and second opposite open ends each defining a mating U-shaped trough section configured to mate with other horizontal trough sections; and
- component support means positioned within the cable pathway for holding an optical fiber component.
9. The cable trough of claim 8 wherein the component support means holds an optical fiber cable component selected from a group consisting of connectors, adapters, splitters/combiners, attenuators, splicings, switches, wave division multiplexers, and amplifiers.
10. A cable trough comprising:
- a cable pathway structure including a bottom portion and upstanding sides extending from the bottom portion to define a cable pathway, the cable pathway structure including a first open end, a second open end, and a central portion disposed therebetween, the first and second open ends each defining a mating U-shaped trough section configured to mate with other horizontal trough sections;
- a component support holder positioned in the cable pathway and extending transversely to the cable pathway; and
- a plurality of cable components mounted to the component support holder, wherein the cable components are selected from a group consisting of connectors, adapters, splitters/combiners, attenuators, splicings, switches, wave division multiplexers, and amplifiers, the cable components defining an array extending transversely to the cable pathway.
11. The cable trough of claim 5, wherein the optical fiber cable component is located within the cable pathway.
12. The cable trough of claim 8, wherein the component support means is positioned for holding an optical fiber component at a location within the cable pathway.
13. The cable trough of claim 10, wherein the plurality of cable components mounted to the component support holder are located within the cable pathway.
3033913 | May 1962 | Dietze |
4270020 | May 26, 1981 | Kenworthy et al. |
4926009 | May 15, 1990 | Van Leeuwen |
5067678 | November 26, 1991 | Henneberger et al. |
5316243 | May 31, 1994 | Henneberger |
5316244 | May 31, 1994 | Zetena, Jr. |
5676566 | October 14, 1997 | Carlson et al. |
- ADC Telecommunications “Fiber Cable Management Products”, pp. 1-147 and cover pages, Second Edition, (Oct. 1995).
- ADC Telecommunications “FL2000 Products”, pp. 1-48, and cover pages, (Nov. 1996).
- ADC Telecommunications catalogue entitled “Fiber Panel Products Second Edition,” 117 pages, dated Jul. 1996.
- ADC Telecommunications brochure entitled “FiberGuide® Fiber Management Systems,” 33 pages, dated Oct. 1995.
- Warren & Brown & Staff brochure pages entitled, “light-paths,” Issue 2,11 pages, dated 1995.
- Warren & Brown & Staff Pty Ltd brochure pages entitled “Optical Fibre Ductwork,” 2 pages, undated.
- ADC Telecommunications brochure entitled “Fiber Guide™ Fiber Management System, ” 6 pages, dated Jun. 1989.
Type: Grant
Filed: Jul 12, 2001
Date of Patent: Nov 10, 2009
Assignee: ADC Telecommunications, Inc. (Eden Prairie, MN)
Inventors: Timothy Jon Haataja (Prior Lake, MN), Thomas Walter Kampf (Minnetonka, MN), Wayne Albin Johnson (Rosemount, MN), Gary F. Nault (Bloomington, MN)
Primary Examiner: William J Deane
Attorney: Merchant & Gould P.C.
Application Number: 09/904,280
International Classification: H04M 1/00 (20060101); H04M 9/00 (20060101);