Wiring of optical communication cable to buildings

Details Wiring of optical communication cable to buildings Wiring of optical communication cable to buildings

2001-06-05

2003-02-18

Field, Lynn (Department: 2839)

Optical waveguides

Optical transmission cable

C385S114000

Reexamination Certificate

active

06522814

ABSTRACT:

FIELD OF THE INVENTION
The present invention is related to wiring of optical fiber cable to buildings such as office buildings.
BACKGROUND OF THE INVENTION
In buildings such as an office building, the predetermined tape core wire or taped optical core wire in a principal cable for optical-communications hung from the upper part of the building and connected to the precincts-optical cabinet PT, which is installed underground in the building, is also connected to the principal cable from outside of the building and connects to fuse together, mechanically and using connectors, with the precincts-cabinet PD which is installed in the predetermined story. In addition, an optical cable from the precincts-cabinet for each floor or story is connected with the network channel terminal equipment.
In the conventional principal cable which hangs in the building, it is customary to remove the sheath of a predetermined position in the installation spot and connect the taped core wire thereof to the precincts-cabinet PD. Therefore, the connector attachment, mechanical connection, etc. were performed at the installation spot, and there was a possibility that the work was problematic in that serious problems arose.
When a change in demand arose, i.e., an increase in demand for a circuit, additional wiring had to be installed, and there was a possibility that the work became complicated.
SUMMARY OF THE INVENTION
In light of the forgoing, it is an object of the invention to provide a wiring for optical communication cable to buildings that can be performed without complicated connection work using connector attachments etc. on the spot.
It is another object of the invention to provide a wiring arrangement for optical communication cable to a building including connectors which can be assembled at a factory and for which the principal cable can be wired using a branch implement that can be attached by comparatively easy work on the spot. In addition, the ratio of the number of optical core wires of the external wiring in reserve and the branch cable for the various stories in the building can be freely selected, so that when a change in demand arises and the increase in a circuit is needed, it can also be performed very easily.
Novel features which are believed to be characteristic of the invention, both as to its organization and method of operation, together with further objects and advantages thereof, are described below with reference to the accompanying drawings in which preferred embodiments of the invention are illustrated as an example.
It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only, and are not intended as a definition of the limits of the invention.


REFERENCES:
patent: 4807962 (1989-02-01), Arroyo et al.
patent: 4818060 (1989-04-01), Arroyo
patent: 5742713 (1998-04-01), Sanders et al.
patent: 6178278 (2001-01-01), Keller et al.
patent: 6341188 (2002-01-01), Serrander et al.
patent: 2001-51131 (2001-02-01), None
patent: 2001-147359 (2001-05-01), None

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