发明授权
- 专利标题： Closed hollow support
- 专利标题（中）： 封闭中空支撑
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申请号： US379171申请日： 1989-07-12
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公开(公告)号： US4955570A公开(公告)日： 1990-09-11
- 发明人: Erwin Benz , Wolfgang Rau , Rainer Bauer , Gerd Willy
- 申请人： Erwin Benz , Wolfgang Rau , Rainer Bauer , Gerd Willy
- 申请人地址： DEX Stuttgart
- 专利权人： Daimler-Benz Aktiengesellschaft
- 当前专利权人： Daimler-Benz Aktiengesellschaft
- 当前专利权人地址： DEX Stuttgart
- 优先权： DEX3823522 19880712; DEX3914960 19890506
- 主分类号： B21D47/04
- IPC分类号： B21D47/04 ; B62D21/02 ; E04C3/04 ; E04C3/07
摘要：
The invention relates to a closed hollow support which has stiffening sections in its interior. The stiffening sections are connected with the support section and with one another. The support sections, which form the outer surface of the hollow support, are welded together along longitudianl seams and at least one of them has holes which are suitable for guiding a welding tool, a screwdriver or a riveting tool used to connect the stiffening sections.