US5114886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unique ceramic compound
Assignee: Ibiden Co Ltd
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Filing: 1990-02-28
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Granted: 1992-05-19
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Expires: 2010-02-28
Abstract
Abstract A sliding material made of a sintered silicon carbide having open pores of a three dimensional network structure, the open pores present at a rate of 5 to 40 percent by volume, with the open pores being impregnated with a lubricant, where the lubricant is selected from a group of lubricants consisting of fluorine-type oils and silicone-type oils.
Inventors
- 👤 Kiyotaka Tsukada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:43
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B38/00; C04B41/45; C04B41/46; C04B41/47; C04B41/48; C04B41/4838; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961; C04B41/80; C04B41/81; C04B41/82; C04B41/83; C04B41/84; F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/078; F16K11/0782; F16K11/0787; F16K3/00; F16K3/02; F16K3/04; F16K3/06; F16K3/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823; Y10T29/00; Y10T29/49; Y10T29/49405
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
43 words
A sliding material comprising a sintered silicon carbide having open pores of a three dimensional network structure: said open pores comprising 5 to 40% by volume said open pores being impregnated with a lubricant wherein said lubricant comprises a fluorine or silicone oil.
Claim 2
Dependent Claim
43 words
A sliding material comprising a sintered silicon carbide having open pores of a three dimensional network structure: said open pores comprising 5 to 40% by volume said open pores being impregnated with a lubricant wherein said lubricant comprises a fluorine or silicone oil.
Claim 3
Dependent Claim
32 words
A sliding material according to claim 1 wherein said fluorine oil is a mixture of one or more oils selected from among fluoroethylene, fluoroester, fluorotriazine, perfluoropolyther, fluorosilicone, their derivatives and their polymers.
Claim 4
Dependent Claim
31 words
A sliding material according to claim 1 wherein said silicone oil is a mixture of one or more oils selected from among methyl silicone, methylphenyl silicone, their derivatives and their polymers.
Claim 5
Dependent Claim
33 words
A sliding material according to claim 1 wherein said sintered silicon carbide comprises crystals and the average granule diameter of the crystals of said sintered silicon carbide is less than 10 μm (micrometers).
Claim 6
Dependent Claim
45 words
A sliding material according to claim 1 wherein said lubricant is impregnated within said open pores at the rate of 100 parts by volume of the open pores of the said sintered silicon carbide with at least 10 parts by volume of the said lubricant.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |