Patent US4459047A successfully refreshed from Google Patents.
US4459047A
Expired / Lapsed
US
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Foil bearing surfaces and method of making same
Assignee: Garrett Corp
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Filing: 1983-05-11
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Granted: 1984-07-10
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Expires: 2003-05-11
Abstract
Abstract A perforated foil bearing surface having dry lubricant reservoirs dispersed throughout and a method of producing such perforated foil bearing surfaces.
Inventors
- 👤 Alexander Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:52
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/04; F16C17/042; F16C17/02; F16C17/024; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1005; F16C33/1095; F16C17/10; F16C33/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A fluid bearing comprising: a pair of members arranged for relative movement with respect to one another; and a plurality of compliant foils operably disposed between said pair of relatively movable members and mounted on one of said pair of members, each of said compliant foils comprising a thin, compliant metallic foil member; a dry lubricant coating of an approximate thickness of 0.0003 inches on at least one side surface thereof; and a multiplicity of dry lubricant reservoirs, between 2000 to 4500 per square inch of surface, disposed beneath the surface of the dry lubricant coating.
Claim 2
Dependent Claim
96 words
A fluid bearing comprising: a pair of members arranged for relative movement with respect to one another; and a plurality of compliant foils operably disposed between said pair of relatively movable members and mounted on one of said pair of members, each of said compliant foils comprising a thin, compliant metallic foil member; a dry lubricant coating of an approximate thickness of 0.0003 inches on at least one side surface thereof; and a multiplicity of dry lubricant reservoirs, between 2000 to 4500 per square inch of surface, disposed beneath the surface of the dry lubricant coating.
Claim 3
Dependent Claim
11 words
The fluid bearing of claim 1 wherein said bearing is hydrodynamic.
Claim 4
Dependent Claim
11 words
The fluid bearing of claim 1 wherein said bearing is hydrostatic.
Claim 5
Dependent Claim
18 words
The fluid bearing of claim 1 wherein said plurality of compliant foils are mounted at one end thereof.
Claim 6
Dependent Claim
18 words
The fluid bearing of claim 1 wherein said plurality of compliant foils are mounted intermediate the ends thereof.
Claim 7
Dependent Claim
38 words
The fluid bearing of claim 1 including a plurality of foil stiffeners mounted on the same one of said pair of relatively movable members as said plurality of compliant foils to increase the effective stiffness of said foils.
Claim 8
Dependent Claim
13 words
The fluid bearing of claim 1 wherein said bearing is a journal bearing.
Claim 9
Dependent Claim
13 words
The fluid bearing of claim 1 wherein said bearing is a conical bearing.
Claim 10
Dependent Claim
13 words
The fluid bearing of claim 1 wherein said bearing is a thrust bearing.
References Cited (Backward Citations)
US2330635A
Cited
GB821954A
Cited
DE1056880B
Cited
US3341348A
Cited
US3360312A
Cited
US3677612A
Cited
US4005914A
Cited
US4178046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |