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US 7,160,622 B2Granted
Oil repelling agent
AssigneeMinebea Co., Ltd.
InventorsAkio Okamiya, Takahiko Ito
Life of this patent
Estimating the term…
Abstract
An oil repelling agent to coat a dynamic pressure device, such as a fluid dynamic pressure bearing device, includes a UV coloring agent, a fluorine-based polymer and a solvent. In an exemplary embodiment of the invention, the concentration of the UV coloring agent component is about 100 PPM to about 400 PPM, and the concentration of the fluorine polymer is about 0.1% by weight to about 0.6% by weight.
Claims20
An oil repelling agent, comprising:
- about 100 PPM to about 400 PPM of a UV coloring agent;
- from about 0.1% to about 0.6% by weight of a fluorine-based polymer;
- and
- a solvent.
1 more element
An oil repelling agent, comprising:
- about 150 PPM to about 300 PPM of a UV coloring agent;
- about 0.2% to about 0.5% by weight of a fluorine-based polymer;
- and a solvent.
A bearing component, comprising:
- a surface having an oil repelling film deposited thereon, the oil repelling film
- being formed from an oil repelling agent including:
- about 100 PPM to 400 PPM of a UV coloring agent;
- from about 0.1% to about 0.6% by weight of a fluorine-based polymer;
- and
- a solvent.
3 more elements
A fluid dynamic pressure bearing component, comprising:
- a surface having an oil repelling film deposited thereon, the oil repelling film
- being formed from an oil repelling agent including:
- about 100 PPM to 400 PPM of a UV coloring agent;
- from about 0.1% to about 0.6% by weight of a fluorine-based polymer;
- and
- a solvent.
3 more elements
A fluid repelling agent, comprising:
- about 100 PPM to about 400 PPM of a UV coloring agent;
- from about 0.1% to about 0.6% by weight of a fluorine-based polymer;
- and
- a solvent.
1 more element
Dependencies are inferred from the claim text.