Patent ID: 11866360
Assignee: J-FIBER GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC C  G | IPC C

Claim 1:
2. The method as recited in claim 1, wherein, prior to fusing the jacketing tube containing the receiving tube to form the preform, the method further comprises:
removing at least one of,
a second part-tube segment comprising a second part-tube segment cross-sectional area,
a third part-tube segment comprising a third part-tube segment cross-sectional area,
a fourth part-tube segment comprising a fourth part-tube segment cross-sectional area, and
further part-tube segments each comprising a further part-tube segment cross-sectional area,, from the center of the receiving tube so that the receiving tube comprises at least one of,
a second core rod receiving cut-out,
a third core rod receiving cut-out,
a fourth core rod receiving cut-out, and
further core rod receiving cut-outs, and, azimuthally separating the second core rod receiving cut-out, the third core rod receiving cut-out, the fourth core rod receiving cut-out, and the further core rod receiving cut-outs, as the case might be, from each other by a material of the receiving tube;
inserting at least one of,
a second core rod into the second core rod receiving cut-out,
a third core rod into the third core rod receiving cut-out,
a fourth core rod into the fourth core rod receiving cut-out, and
further core rods into the further core rod receiving cut-outs,, so that the receiving tube contains the second core rod, the third core rod, the fourth core rod, and the further core rods, as the case might be; and
axially introducing the receiving tube containing the second core rod, the third core rod, the fourth core rod, and the further core rods, as the case might be, and the central filling rod into the jacketing tube so that the jacketing tube contains the receiving tube.