发明名称 Compact tube with internal features and methods for fabricating the same
摘要 Methods for forming a tube that includes a feature extending from an inner surface of the tube are provided. The methods can include using a die and stamper, single impact extrusion, double impact extrusion, and progressive deep draw process.
申请公布号 US2008163663(A1) 申请公布日期 2008.07.10
申请号 US20070824442 申请日期 2007.06.28
申请人 APPLE INC 发明人 HANKEY M. EVANS;SANFORD EMERY A.
分类号 B21C37/06;B21D22/20;B21D31/00;B21D35/00;B21D51/00;D01D5/24 主分类号 B21C37/06
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