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Distribution frame for optical cables
| Details |
Inventors: Nozick, Jacques E.;
Assignee:
Primary Examiner: Wise; Robert E.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Mion, Zinn Macpeak and Seas
A distribution frame for optical cables constituted by a plurality of cores (12) each supporting a plurality of optical fibers (13). The distribution frame comprises at least one cable head including at least one cassette (4) and a vertical duct (1), said duct is a generally channel section member having longitudinally extending grooves therein, and supports at least one tray (7) for jumpers (9). Adjacent each cassette (4) and inside the duct (1) there are storage means for receiving the cores (12), and advantageously constituted by drums (6) which are relatively displacable inside the duct in a vertical direction. The ducts also support, on their outside, three-way drums (22) associated with each cassette (4) and placed at the back of the cable head, and front drums (5) likewise associated with each cassette (4), said three-way drums (2) and front drums (5) serving to guide the jumpers (9). Each cassette (4) includes storage means for receiving the optical fibers (13) and advantageously constituted by drums (15). The various above-mentioned are each constituted by circular arcuate portions of radius approximately equal to the minimum radius of curvature appropriate the item wound around or guided by the drum in question, i.e. appropriate to cable cores (12), optical fibers (13), or jumpers (9), as the case may be. |
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DETAILED DESCRIPTION The present invention provides a distribution frame for optical cables, where each optical cable is constituted by a plurality of cores, and each core supports a plurality of optical fibers, said distribution frame comprising at least one cable head comprising at least one distribution cassette and a vertical, grooved, channel section duct supporting at least one tray for jumpers, said duct including, adjacent to each cassette and inside said channel section, storage means for receiving a cable core.
Generally speaking, the outside of each duct is also fitted with a three-way drum adjacent to each cassette and on the back of the cable head, and a front drum for guiding the jumpers.
Each cassette in the distribution frame in accordance with the invention comprises a housing, a removable plate for supporting at least one connector or at least one multiplexer, a cover, and storage means for receiving optical fibers.
Preferably, the storage means for receiving optical fiber cable cores and the storage means for receiving optical fibers include drums.
The drums for receiving the cores, the drums for receiving the fibers, and also the three-way drums and the front drums should all comprise at least a portion which is circular and has a radius which is at least approximately equal to the minimum radius of curvature for the cores, the optical fibers, and the jumpers, as the case may be.
Advantageously, parallel duct risers are separated from one another by a distance equal to about twice the limiting radius of curvature for the cores.
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