公开(公告)号：EP1568931A4

公开(公告)日：2007-11-28

申请号：EP03770065

申请日：2003-10-31

申请人： FUJIKIN KK

发明人： ITOI SHIGERU ,  YAMAJI MICHIO ,  SHINOHARA TSUTOMU ,  TSUBOTA KENJI ,  YOSHIDA TADANOBU ,  OZAWA SUSUMU

IPC分类号： F16L23/16 ,  F16J15/08 ,  F16L23/20 ,  F16L23/02

CPC分类号： F16J15/0887 ,  F16J15/0881 ,  F16L23/20 ,  Y10S285/91 ,  Y10S285/917 ,  Y10T29/49297 ,  Y10T29/49872 ,  Y10T403/645

摘要： A projection (7) of a gasket (4) has a trapezoidal shape defined by an inwardly facing inclined face (7a) as an outer periphery, an outwardly facing inclined face (7b) as an inner periphery, and a flat face (7c) as a tip face. The hardness of the gasket (4), the angle formed by the inclined faces (7a, 7b) of the projection (7), the height of the projection, and the area of the flat face (7c) of the projection tip are set so that a thrust value during tightening is between predetermined minimum and maximum values.