Patent ID: 11940648
Assignee: HERAEUS QUARZGLAS GMBH & CO. KG
Field: Other special machines (Mechanical engineering)
Classification: CPC C  G | IPC C  G

Claim 1:
2. Method according to claim 1, characterized in that at least a portion of the tubular anti-resonance element preforms is composed of several nested structural elements and comprises at least one ARE outer tube and an ARE inner tube running in the ARE outer tube and in parallel to the longitudinal axis of the ARE outer tube, wherein the ARE outer tube has an oval, preferably elliptical, outer cross-sectional shape with the axis length ratio AL/AK in the range between 1.07 and 1.27, and the ARE inner tube has an oval, preferably elliptical, outer cross-sectional shape with the axis length ratio AL/AK in the range between 1.01 and 1.05.