US4444804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame sprayed coatings
Assignee: Rolls Royce PLC
•
Filing: 1983-02-04
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Granted: 1984-04-24
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Expires: 2003-02-04
Abstract
Abstract A method of sealing a flame sprayed metal or metal containing coating on a metal substrate in which the deposited coating is saturated with an anaerobically curable sealant such as a polymethacrylic ester with an amine catalyst which has a viscosity of up to 25 centipoises. After the sealant has been applied to the coating, excess sealant is wiped off the coating surface and the sealant is cured. The sealant prevents the absorption of water by the flame sprayed coating and hence corrosion of the metal substrate.
Inventors
- 👤 Gregory P. Ferrari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:05
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; C; C23; C23C; C23C4/00; C23C4/18; B05D2350/00; B05D2350/60; B05D2350/65
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A method of providing a flame sprayed metal or metal containing coating on a metal substrate comprising the subsequent steps of flame spraying finely divided metal particles or metal containing finely divided particles on to a metal substrate until a coating of the required thickness has been deposited thereon, cooling the coated substrate and applying to said coating an anaerobically curable sealant of a polymethacrylic ester with an amine catalyst and having a viscosity of up to 25 centipoises in such an amount as to saturate said coating, removing excess sealant from the surface of said coating and curing said sealant.
Claim 2
Independent Claim
101 words
A method of providing a flame sprayed metal or metal containing coating on a metal substrate comprising the subsequent steps of flame spraying finely divided metal particles or metal containing finely divided particles on to a metal substrate until a coating of the required thickness has been deposited thereon, cooling the coated substrate and applying to said coating an anaerobically curable sealant of a polymethacrylic ester with an amine catalyst and having a viscosity of up to 25 centipoises in such an amount as to saturate said coating, removing excess sealant from the surface of said coating and curing said sealant.
Claim 3
Dependent Claim
31 words
A method of providing a flame sprayed metal or metal containing coating on a metal substrate as claimed in claim 1 wherein the viscosity of said sealant is approximately 15 centipoises.
Claim 4
Dependent Claim
71 words
A method of providing a flame sprayed metal or metal containing coating on a metal substrate as claimed in claim 1 wherein said coating is machined after said sealant has been cured, further of said sealant being applied to said coating surfaced after said machining so as to ensure that said coating is saturated, excess sealant being removed from said coating surface prior to the curing of said further applied sealant.
References Cited (Backward Citations)
US2958609A
Cited
GB956740A
Cited
GB979746A
Cited
GB1318209A
Cited
GB1356017A
Cited
GB1272691A
Cited
US3759739A
Cited
US3981155A
Cited
US4198442A
Cited
JPS56127449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |