美國
US 12,703,021 B2
Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product
US 12,703,021 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-11。申請人：BENTELER STEEL/TUBE GMBH。PDF 可在本頁下載，未登入每天最多 5 篇。
- 申請人
- BENTELER STEEL/TUBE GMBH
- 發明人
- DANIEL LUECKE; DIRK TEGETHOFF; MARCEL WELLPOTT
- 公開日
- 2026-08-11
- 申請日
- 2022-08-22
- 文件種類
- B2 核准公告
- 也寫作
- US 12,703,021 B2 · US12703021 · 12703021
摘要
The present invention provides a method for producing a steel tubular product which includes shaping a steel tube into a pre-geometry by non-rotationally and axially moving the steel tube into an outer tool to reduce an outer diameter of the pre-geometry in an end region in the outer tool. An inner diameter is calibrated with the pre-geometry arranged within the outer tool by introducing an inner mandrel into the end region of the pre-geometry, and pressing against the outer tool to calibrate the inner diameter via a shaping.…
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專利局網站： 美國專利商標局（USPTO）