Claims
- 1. A hemispherical fluid bearing comprising:
- a pair of inner rings, each having a spherical outer lubricating surface, said inner rings being fixed to a shaft in opposition to each other; and
- an outer ring having a lubricating surface corresponding to said lubrication surfaces of said inner rings for supporting the rotation of said inner rings;
- wherein each of said inner rings has a first film coating of titanium formed on the lubricating surface thereof, and a second film coating of a diamond-like-carbon which is formed on said first film coating.
- 2. A hemispherical fluid bearing as claimed in claim 1, wherein said outer ring is formed of ceramic.
- 3. A hemispherical fluid bearing as claimed in claim 1, wherein said outer ring is formed of titanium.
- 4. A hemispherical fluid bearing as claimed in claim 1, wherein a groove is formed in said second film coating.
- 5. A hemispherical fluid bearing as claimed in claim 4, wherein said groove extends to said first film coating.
- 6. A hemispherical fluid bearing as claimed in claim 1, wherein said first film coating is 5-20 .mu.m thick.
- 7. A hemispherical fluid bearing as claimed in claim 1, wherein said second film coating is 0.1-5 .mu.m thick.
Parent Case Info
This is a Continuation-In-Part of application Ser. No. 08/581,229 filed Dec. 29, 1995, now abandoned.
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5127744 |
White et al. |
Jul 1992 |
|
5315196 |
Yoshida et al. |
May 1994 |
|
5366298 |
Toshimitsu et al. |
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94020 |
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Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
581229 |
Dec 1995 |
|