TOOL FOR THE CUTTING CLEAVAGE OF OPTICAL FIBERS

Abstract: Tool for the cutting and cleavage of optical fibers that is made up of a body (1), to which is fixed a support (2) that shelters a crystal (3), whose shape is characteristic. The three parts that compose the tool are not movable in relation to each other, and the assembly is portable and light. It serves to cut optical fibers, and its use leaves the cut surface perfect for splicing or joining, dispensing with additional operation.

Description: TOOLFORTHECUTTINGCLEAVAGEOFOPTICALFIBERS Optical fibers, to be used in practice, must be susceptible to being cut, spliced, or connected to a terminal. Splicing of two segments of opti cal fiber, or connecting one of the segments to a terml nal, demands that the surfaces to be joined, be perfectly smooth, to minimize losses of energy. This job is done at present with thehelp of expensive and complicated tools, such as pliers provided with varied motions . The object of this patent of in- vention is a tool formed of three parts, none of them movable with reference to the others: an elongated body, with the shape of a pencil; in one of its ends a support, with a characteristic shape, which serves to shelter a crystal; and the crystal, which is the part of the tool that is used to cut or cleave the optical fiber. The utilization of this tool is done in the way described as follows: OMPI < The fiber to be cut, with or without a plastic cover, is laid on a hard surface, and fixed at two points, to the left and to the right of the point to be cut. This fixation may be done even with two of the fingers of the operator. Next, the fiber is marked, at the desi ^ red point, with the tool to be patented. Finally, the fiber is pulled, manually or with the help of tweezers, provoking a cut at the desired point. The surface so ob_ tained is perfect for splicing optical fibers or . " for fixing to connectors, dispensing any other additional finishing. The use of this tool (claim 2) constitutes a novelty, as it is different to any of the existing tools, having the advantage of its easiness of transportation and use, due to its low weight, to its simplicity, while it maintains the quality of the job to be executed (claim 1) . The object of claim 3 is the use of a cutting crystal in the tool, without precedente in the cutting of optical fibers. The shape of the crystal, shown in figure 2, is the ob¬ ject of claim 4. Claim 5 relates to the support of the crystal, rigidly fixed to the body of the tool, and whose shape allows the fastening of the crystal with ease, (claim 6). -3- Clai 7 relates to the inventions assembly; it describes a light and practical tool. Compared with existing tools, it presents the advantage of being easily portable, as it can be carried even in the pocket of the shirt of the operator; in addition, we have its low cost; all of it due to the simplicity of its conception.

Claims: CLAIMS 1. TOOL FOR THE CUTTING AND CLEA VAGE OF OPTICAL FIBERS, characterized by its use in the cut and cleavage of optical fibers, to be used in opti- cal communication, lighting systems, of transference>and enlarging of images. 2. TOOL FOR THE CUTTING AND CLEA VAGE OF OPTICAL FIBERS, according to claim 1, character! zed by the absence of body supports, making it of easy handling and low cost. 3. TOOL FOR THE CUTTING AND CLEA VAGE OF OPTICAL FIBERS, according to claim 1, character^ zed by the presence of a crystal (figure 3) , wich serves to cut and cleave the fiber, leaving it in condition to be joined or connected to a terminal immediately, ithout any additional finishing. 4. TOOL FOR THE CUTTING AND CLEA VAGE OF OPTICAL FIBERS, according to claim 3, character^ zed by the shape of the crystal (figure 4) , defined as a parallelepiped, where two of the larger faces were cut at an angle and polished, leaving the crystal suitable for the functions of cutting and cleavage. jREA cr 5. TOOL FOR THE CUTTING AND CLEA¬ VAGE OF OPTICAL FIBERS, according to claim 3, characteri zed by the existence of a support for the fastening of the crystal (figure 2). 6. TOOL FOR THE CUTTING AND CLEA¬ VAGE OF OPTICAL FIBERS, according to claim 5, characteri zed by the shape of the channel to shelter the crystal , composed of three straight walls, with the central wall being perpendicular to the other two. 7. TOOL FOR THE CUTTING AND CLEA¬ VAGE OF OPTICAL FIBERS, according to claim 1, characteri zed by being made up of a body (1) , a crystal of charac¬ teristic shape (4) , and a support (2) , containing a channel to shelter the crystal. ;REA " CT OMPI

Inventors: GROSSMAN B
Applicants: BRASILIA TELECOM, GROSSMAN B
Application year: 1980
Main classification: B26F1
IPC codes: B26D1, G02B6