Patent ID: 11913454
Assignee: EAGLE INDUSTRY CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. A sliding component having an annular shape with a fluid facing inside and outside of the sliding component and having a sliding surface relatively sliding with eccentric rotation, wherein
the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction,
each dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion deeper than the shallow groove portion,
the shallow groove portion communicates with the deep groove portion,
a communication passage providing a communication between the deep groove portion and either an inside space or an outside space of the sliding component is formed in the sliding component,
the communication passage has a circumferential length smaller than a circumferential length of the deep groove portion, and
the shallow groove portion surrounds the deep groove portion in an annular shape.