US3960545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cermet plasma flame spray powder, method for producing same and articles produced therefrom
Assignee: GTE Sylvania Inc
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Filing: 1975-03-24
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Granted: 1976-06-01
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Expires: 1995-03-24
Abstract
Abstract Plasma flame spray coatings exhibiting improved hardness and wear resistance are produced from flame spray powders comprising spray dried agglomerates of finely divided molybdenum and alumina powder subparticles, wherein the diameters of the agglomerates are at least two times the maximum diameter of the subparticles.
Inventors
- 👤 David J. Port
- 👤 William D. Lafferty
- 👤 Richard F. Cheney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:39
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; B; B22; B22F; B22F1/00; B22F1/14; B22F1/148; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0031
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
44 words
A free flowing flame spray powder comprising agglomerates of powder particles, said agglomerates consisting essentially of subparticles of a metallic component selected from the group consisting of molybdenum and its alloys and from 1 to 50 weight percent of subparticles of an alumina component.
Claim 2
Dependent Claim
44 words
A free flowing flame spray powder comprising agglomerates of powder particles, said agglomerates consisting essentially of subparticles of a metallic component selected from the group consisting of molybdenum and its alloys and from 1 to 50 weight percent of subparticles of an alumina component.
Claim 3
Dependent Claim
19 words
The powder of claim 1 wherein the agglomerates consist essentially of from about 5 to 20 weight percent alumina.
Claim 4
Dependent Claim
25 words
The powder of claim 1 wherein at least 90 percent of the agglomerate diameters are at least two times the maximum diameter of the subparticles.
Claim 5
Dependent Claim
25 words
The powder of claim 3 wherein at least 90 percent of the agglomerate diameters are at least four times the maximum diameter of the subparticles.
Claim 6
Dependent Claim
18 words
The powder of claim 1 wherein the metallic component subparticles range in size from 1 to 10 microns.
Claim 7
Dependent Claim
20 words
The powder of claim 5 in which the metallic component subparticles range in size from about 2 to 3 microns.
Claim 8
Dependent Claim
16 words
The powder of claim 1 wherein the alumina subparticles range in size up to 10 microns.
Claim 9
Dependent Claim
17 words
The powder of claim 7 in which the alumina subparticles range in size up to 1 micron.
Claim 10
Dependent Claim
17 words
The powder of claim 1 wherein the agglomerate sizes are 90% between minus 200 plus 325 mesh.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |