公开(公告)号：US20190040956A1

公开(公告)日：2019-02-07

申请号：US15538139

申请日：2016-10-21

Applicant: TPR CO., LTD.

Inventor： Hitoshi YAMAGUCHI ,  Teppei OGA

IPC: F16J15/3272 ,  F16J15/44

Abstract: Provided is a seal ring causing less friction and having a low oil leakage property even under a state in which a shaft rotation frequency or a housing rotation frequency is high, and being capable of reducing a shaft rotation torque. A level difference portion that forms a second width smaller than a first width is formed on a longitudinal sectional shape of the seal ring as viewed in a circumferential direction from a seal ring outer peripheral surface side toward a seal ring inner peripheral surface side. The level difference portion is formed so that a center line of the second width in the circumferential direction of the seal ring in which a sealed fluid flows draws a trajectory of extending along the circumferential direction and shifting from an abutment joint end surface on an inner periphery side of a seal ring abutment joint portion at one end toward an abutment joint end surface on the inner periphery side of the seal ring abutment joint portion at another end so as to be closer to the seal ring contact surface.

公开(公告)号：US20190085981A1

公开(公告)日：2019-03-21

申请号：US15742451

申请日：2017-03-13

Applicant: TPR CO., LTD.

Inventor： Hitoshi YAMAGUCHI ,  Teppei OGA

IPC: F16J15/3272 ,  F16J15/3284 ,  F16J15/24

Abstract: To fulfill a sealing function for a fluid within a short period of time when a pump configured to pressure-feed the fluid is activated, provided are a seal ring, including: a first side surface (20); a second side surface (30) being a side surface on a side opposite to the first side surface (20); and a first side-surface side projecting portion (40) formed on the first side surface (20), in which a distal end portion (42) of the first side-surface side projecting portion (40) projects most toward an outward side from the first side surface (20) as compared to an entire surface of the first side surface (20) except for the distal end portion (42), and a sealing device using the same.