发明授权
- 专利标题： Fastening assembly for roofs of soft materials
- 专利标题（中）： 软质屋顶的紧固组件
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申请号： US877535申请日： 1986-06-23
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公开(公告)号： US4856951A公开(公告)日： 1989-08-15
- 发明人: William J. Blucher , Richard J. Ernst , Francis C. Peterson
- 申请人： William J. Blucher , Richard J. Ernst , Francis C. Peterson
- 申请人地址： IL Chicago
- 专利权人： Illinois Tool Works, Inc.
- 当前专利权人： Illinois Tool Works, Inc.
- 当前专利权人地址： IL Chicago
- 主分类号： E04D3/36
- IPC分类号： E04D3/36 ; E04F13/08 ; F16B37/12
摘要：
A fastening assembly for use in attaching articles to soft materials such as gypsum based and light weight concrete roofing. The assembly includes an anchoring element which has a high thread and an axial bore in one end. The thread has an included angle of less than 45.degree. and terminates in a sharp edge at the free end of the anchoring element. A headed screw is driven into the bore and becomes fixed to the anchoring element. A flange is integrally molded and frangibly connected to the bored end of the anchoring element, and becomes a washer upon breaking away therefrom.
公开/授权文献
- US5887089A Low insertion loss optical switches in display architecture 公开/授权日：1999-03-23