Hollow structure for fuel
US-2024218946-A1 · Jul 4, 2024 · US
Method of producing tube body
US2025297696A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025297696-A1 |
| Application number | US-202519229467-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 5, 2025 |
| Priority date | Mar 19, 2020 |
| Publication date | Sep 25, 2025 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A tube body production method includes steps of: disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel and an axial direction end portion of the mandrel has an exposed region where the fiber body is not disposed; disposing a fixing member with respect to the outer circumferential surface of the mandrel so that the fixing member covers the fiber body and extends to the exposed region, the fixing member having a tubular shape and configured to fix the fiber body with respect to the outer circumferential surface of the mandrel; and impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin.
First claim
Opening claim text (preview).
What is claimed is: 1 . A tube body production method comprising: a disposing step of disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel; a fixation step of disposing a fixing member with respect to the outer circumferential surface of the mandrel so that the fixing member covers the fiber body, the fixing member having a tubular shape and configured to fix the fiber body with respect to the outer circumferential surface of the mandrel; and a molding step of impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin, wherein, in the disposing step, the fiber body is disposed so that an axial direction end portion of the mandrel has an exposed region where the fiber body is not disposed, and wherein, in the fixation step, the fixing member is disposed so that the fixing member extends to the exposed region. 2 . The tube body production method according to claim 1 , wherein the method further comprises: a shrinkage step of heating the fixing member using heats of the resin and of a molding device, which heats are generated in the molding step, thereby to cause the fixing member to shrink. 3 . A tube body production method comprising: a disposing step of disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel; a fixation step of disposing a plurality of fixing members with respect to the outer circumferential surface of the mandrel in a manner of being spaced apart in the axial direction of the mandrel so that each of the plurality of fixing members covers the fiber body, the plurality of fixing members each having a tubular shape and configured to fix the fiber body with respect to the outer circumferential surface of the mandrel; and a molding step of impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin, wherein, in the disposing step, the fiber body is disposed so that an axial direction end portion of the mandrel has an exposed region where the fiber body is not disposed, and wherein, in the fixation step, the plurality of fixing members are disposed so that at least one of the plurality of fixing members extends to the exposed region. 4 . The tube body production method according to claim 3 , wherein the method further comprises: a shrinkage step of heating the plurality of fixing members using heats of the resin and of a molding device, which heats are generated in the molding step, thereby to cause the plurality of fixing members to shrink.
Assignees
Inventors
Classifications
Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004) · CPC title
Carbon · CPC title
heat shrinkable {(B29K2995/0049 takes precedence)} · CPC title
using tubular layers or sheathings · CPC title
of non-flat surfaces, e.g. curved, profiled (B29C63/042 takes precedence) · CPC title
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- What does patent US2025297696A1 cover?
- A tube body production method includes steps of: disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel and an axial direction end portion of the mandrel has an exposed region where the fiber body is not disposed; disposing a fixing member with respect to the outer circumferential surface of the ma…
- Who is the assignee on this patent?
- Hitachi Astemo Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16L9/123. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 25 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).