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US 7,810,999 B2Granted
Metal bearing
AssigneeAisin Seiki Kabushiki Kaisha
InventorHiroshi Kobayashi
Life of this patent
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Abstract
A metal bearing having a long operating life that is not affected by the operating temperature. The metal bearing includes a bearing surface capable of slidably contacting with a shaft member, including pores in a surface and interior thereof, and being composed of a sintered compact having a metal or alloy as a main component. A dispersion solvent is provided inside the pores, and maghemite particles exist in the dispersion solvent together with at least one of a gas and a liquid that has a boiling point lower than a boiling point of the dispersion solvent.
Claims12
A metal bearing comprising:
- a bearing surface capable of slidably contacting with a shaft member, including pores in a surface and interior thereof, and being composed of a sintered compact having a metal or alloy as a main component;
- wherein
- a dispersion solvent is provided inside the pores, and maghemite particles exist in the dispersion solvent together with at least one of a gas and a liquid that has a boiling point lower than a boiling point of the dispersion solvent, wherein at least one of the gas or the liquid forms balloons that envelop the maghemite particles, inside the pores that are at or above a certain temperature.
Dependencies are inferred from the claim text.