公开(公告)号：US20170370399A1

公开(公告)日：2017-12-28

申请号：US15190256

申请日：2016-06-23

申请人： SAN-HE CHANG

发明人： SAN-HE CHANG

IPC分类号： F16B43/00 ,  F16B35/00 ,  E04D3/36 ,  F16B39/02 ,  E04D3/24

CPC分类号： F16B43/001 ,  E04D3/24 ,  E04D3/352 ,  E04D3/3606 ,  F16B13/066 ,  F16B35/00 ,  F16B39/02 ,  F16B2013/006 ,  F24S25/615

摘要： A fastener for a corrugated sheet includes a cylindrical assembly including elongated, plate shaped fastening members assembled as a hollow cylinder, the fastening member tapered to one end to form a hook at one end and having a curved groove on an outer surface, and a curved trough on the outer surface at the other end of the fastening member, the curved troughs assembled to form an annular recess; a retainer ring secured to the annular recess; a ring-shaped elastic member secured to the curved groove; a first sealing member put on the retainer ring; and a washer; a threaded bolt driven through the washer, the retainer ring, and the fastening member; and an expansion nut having a multi-sided outer surface and moveably secured to the threaded bolt.