公开(公告)号：US20190360585A1

公开(公告)日：2019-11-28

申请号：US16061123

申请日：2017-07-24

申请人： TPR CO., LTD.

发明人： Kentaro KAWANO ,  Seiji TAMAKI

IPC分类号： F16J9/20 ,  F16J9/06 ,  F16J9/26

摘要： Provided is an oil ring. A shape of an outer peripheral surface of an upper segment arranged on an engine combustion chamber side has a symmetrical curved shape. A shape of an outer peripheral surface of a lower segment arranged on a side away from the engine combustion chamber is a symmetrical curved shape.

公开(公告)号：US20170175893A1

公开(公告)日：2017-06-22

申请号：US15034657

申请日：2015-03-30

申请人： TPR CO., LTD.

发明人： Hironori FUJITA ,  Kentaro KAWANO

IPC分类号： F16J9/20 ,  F02F1/00 ,  F16J9/26 ,  F02F3/00

CPC分类号： F16J9/203 ,  C23C14/0611 ,  C23C14/0641 ,  C23C14/325 ,  F02F5/00 ,  F16J9/06 ,  F16J9/064 ,  F16J9/066 ,  F16J9/067 ,  F16J9/068 ,  F16J9/20 ,  F16J9/206 ,  F16J9/26

摘要： In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.