| (19) |
 |
|
(11) |
EP 4 357 498 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.07.2024 Bulletin 2024/28 |
| (43) |
Date of publication A2: |
|
24.04.2024 Bulletin 2024/17 |
| (22) |
Date of filing: 27.09.2023 |
|
| (51) |
International Patent Classification (IPC):
|
| (52) |
Cooperative Patent Classification (CPC): |
|
D01H 1/115 |
|
| (84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT
NL NO PL PT RO RS SE SI SK SM TR |
|
Designated Extension States: |
|
BA |
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Designated Validation States: |
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KH MA MD TN |
| (30) |
Priority: |
28.09.2022 JP 2022155316
|
| (71) |
Applicant: Murata Machinery, Ltd. |
|
Kyoto-shi,
Kyoto 601-8326 (JP) |
|
| (72) |
Inventor: |
|
- MORITA, Akihiro
Kyoto, 612-8686 (JP)
|
| (74) |
Representative: Zimmermann, Tankred Klaus et al |
|
Schoppe, Zimmermann, Stöckeler
Zinkler, Schenk & Partner mbB
Patentanwälte
Radlkoferstrasse 2
81373 München
81373 München (DE) |
|
| |
|
| (54) |
HOLLOW GUIDE SHAFT, PNEUMATIC SPINNING DEVICE, SPINNING MACHINE, AND HOLLOW GUIDE
SHAFT SET |
(57) The hollow guide shaft has a shaft portion having a fiber introduction hole into
which fibers are introduced and a fiber passage that is continuous with the fiber
introduction hole and extends along an axial direction. Where A is an inner diameter
of the fiber passage and B is a diameter of an introduction opening serving as an
opening end of the fiber introduction hole, 1.12 ≤ B/A ≤ 1.3 is established.