Patent US3953343A successfully refreshed from Google Patents.
US3953343A
Expired / Lapsed
US
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Bearing material
Assignee: National Aeronautics and Space Administration
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Filing: 1974-10-10
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Granted: 1976-04-27
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Expires: 1994-10-10
Abstract
Abstract A composite material is described which will provide low friction surfaces for materials in rolling or sliding contact and is self-lubricating and oxidation resistant up to and in excess of about 930 DEG C. The composite is comprised of a metal component which lends strength and elasticity to the structure, a fluoride salt component which provides lubrication and, lastly, a glass component which not only provides oxidation protection to the metal but may also enhance the lubrication qualities of the composite.
Inventors
- 👤 Harold E. Sliney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:13
CPC Classifications
C; C10; C10M; C10M7/00; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; C10M2201/00; C10M2201/04; C10M2201/05; C10M2201/06; C10M2201/063; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/10; C10M2201/102; C10M2201/105; C10M2201/12; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A self-lubricating, oxidation-resistant composition of matter comprising: a. a metal component capable of providing strength and elasticity to a temperature up to and in excess of about 930° C.; b. a fluoride salt component capable of providing lubrication; and c. a glass component capable of inhibiting oxidation of said metal component.
Claim 2
Dependent Claim
51 words
A self-lubricating, oxidation-resistant composition of matter comprising: a. a metal component capable of providing strength and elasticity to a temperature up to and in excess of about 930° C.; b. a fluoride salt component capable of providing lubrication; and c. a glass component capable of inhibiting oxidation of said metal component.
Claim 3
Dependent Claim
43 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said fluoride salt component is selected from the group consisting of the fluorides of: a. Group I metals; b. Group II metals; c. Rare earth (lanthanide series) metals; and, d. mixtures thereof.
Claim 4
Dependent Claim
26 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said glass component comprises a silicate glass containing at least about 20% of divalent cations.
Claim 5
Dependent Claim
39 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said metal component comprises: a. 20 to 80 weight percent iron, cobalt, or nickel alloy; and b. 0 to 50 weight percent silver, gold, or an alloy thereof.
Claim 6
Dependent Claim
39 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said fluoride salt component and said glass component are present in a combined amount of 20 to 80 weight percent based upon the total weight of the composition.
Claim 7
Dependent Claim
33 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said metal component is present in an amount of 20 to 80 weight percent based upon the total weight of the composition.
Claim 8
Dependent Claim
31 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said fluoride salt component and said glass component are present in a ratio between about 1:2 and 2:1 by weight.
Claim 9
Dependent Claim
29 words
The self-lubricating, oxidation-resistant composition of matter according to claim 7, wherein said fluoride salt component and said glass component are present in the ratio of about 1:1 by weight.
Claim 10
Dependent Claim
65 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein: a. said metal component comprises 80% nickel and 20% chromium; b. said fluoride salt component is selected from calcium fluoride, barium fluoride and mixtures thereof; and said glass component comprises 10 to 50% barium oxide; 0 to 20% sodium oxide, potassium oxide, or mixtures thereof; 0 to 10% calcium oxide; and balance silicone oxide.
Claim 11
Dependent Claim
12 words
A shaped, self-lubricating member comprising the composition as defined by claim 1.
Claim 12
Dependent Claim
18 words
A self-lubricating member comprising a solid substrate bearing a coating of the composition as defined by claim 1.
Claim 13
Dependent Claim
26 words
The self-lubricating, oxidation-resistant composition of matter according to claim 1, wherein said metal component, said fluoride salt component and said glass component constitute an intimate admixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |