US3892883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for plasma spraying fiber-reinforced thermosetting resin laminates
Assignee: Societe Europeenne de Propulsion SEP SA
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Filing: 1973-01-19
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Granted: 1975-07-01
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Expires: 1993-01-19
Abstract
Abstract Laminates coated with copper/glass, nickel aluminide and finally with a metal oxide or carbide have improved mechanical properties especially cohesion.
Inventors
- 👤 Gerard Leclercq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
B; B24; B24C; B24C1/00; C; C23; C23C; C23C4/00; C23C4/02; C23C4/04; C23C4/10; C23C4/11; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12597; Y10T428/12625; Y10T428/1266; Y10T428/12736; Y10T428/1275; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/31504; Y10T428/31511; Y10T428/31525
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A PROCESS FOR PROVIDING A FIBER-REINFORCED THERMOSETTING RESIN LAMINATE WITH A PROTECTIVE COATING, WHICH PROCESS COMPRISES CLEANING THE SURFACE OF THE RESIN LAMINATE T BE COATED WITH A SOLVENT AND THEN BLASTING THE SURFACE WITH AN ABRASIVE TO REMOVE FOREIGN BODIES, PLASMA SPRAYING A LAYER OF A MIXTURE CONTAINING 75% COPER AND 25% GALSS ON THE CLANED AND BLASTED SURFACE, COOLING THE SAID COPPER/GLASS LAYER, PLASMA SPRAYING A LAYER OF NICKEL ALUMINIDE ON THE COPPER/GLASS LAYER, COOLING THE SAID NICKEL ALUNINIDE LAYER, AND PLASMA SPRAYING A LAYER OF CHROMIUM CARBIDE OR TUNGSTEN CARBIDE ON THE NICKEL ALUNINIDE LAYER.
Claim 2
Dependent Claim
98 words
A PROCESS FOR PROVIDING A FIBER-REINFORCED THERMOSETTING RESIN LAMINATE WITH A PROTECTIVE COATING, WHICH PROCESS COMPRISES CLEANING THE SURFACE OF THE RESIN LAMINATE T BE COATED WITH A SOLVENT AND THEN BLASTING THE SURFACE WITH AN ABRASIVE TO REMOVE FOREIGN BODIES, PLASMA SPRAYING A LAYER OF A MIXTURE CONTAINING 75% COPER AND 25% GALSS ON THE CLANED AND BLASTED SURFACE, COOLING THE SAID COPPER/GLASS LAYER, PLASMA SPRAYING A LAYER OF NICKEL ALUMINIDE ON THE COPPER/GLASS LAYER, COOLING THE SAID NICKEL ALUNINIDE LAYER, AND PLASMA SPRAYING A LAYER OF CHROMIUM CARBIDE OR TUNGSTEN CARBIDE ON THE NICKEL ALUNINIDE LAYER.
Claim 3
Dependent Claim
23 words
Process according to claim 1 in which the said laminate comprises a plurality of fibrous layers bonded together with a cured epoxy resin.
Claim 4
Dependent Claim
18 words
A process according to claim 1 in which the blasting is grit blasting at an angle of 30*.
Claim 5
Dependent Claim
17 words
Process according to claim 1 in which the nickel aluminide layer comprises 80% nickel and 20% aluminium.
Claim 6
Dependent Claim
37 words
A process according to claim 1 wherein the thickness of the glass/copper layer is about 0.02 cm; the thickness of the nickel aluminide layer, about 0.05 cm; and the thickness of the carbide layer, about 0.2 cm.
Claim 7
Dependent Claim
12 words
A process according to claim 1 wherein the solvent is a ketone.
Claim 8
Dependent Claim
13 words
A process according to claim 1 wherein the solvent is methyl ethyl ketone.
Claim 9
Dependent Claim
11 words
A process according to claim 1 wherein the abrasive is corundum.
Claim 10
Dependent Claim
20 words
A process according to claim 1 wherein the resin laminate consists essentially of cured epoxy resin and a fibrous material.
Claim 11
Dependent Claim
15 words
A process according to claim 9 wherein the fibrous material is paper, glass, or carbon.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |