Sliding member
OwnerIkurou Takahashiinventor
Life of this patent
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Abstract
According to one aspect of the present invention, a sliding member includes: a sliding surface against which an outer surface of a cam abuts; and a groove having a spiral shape or a plurality of grooves having an annular shape, which are provided on the sliding surface. The sliding surface includes a central region having a circular shape and including a center of the sliding surface, and a first annular region located outside the central region. A ratio RC of a width L2 of the groove to a pitch L1 of the groove in the central region is larger than a ratio RO1 of the width L2 of the groove to the pitch L1 of the groove in the first annular region.
Claims17
A sliding member comprising:
- a sliding surface configured to abut an outer surface of a cam, the sliding surface including a spiral groove or a plurality of concentric annular grooves
- wherein the sliding surface comprises a circular central region and a first annular region encircling the central region, and
- wherein a ratio of groove width (L2) to groove pitch (L1) is greater in the central region than in the first annular region.
Dependencies are inferred from the claim text.