Patent US3507301A successfully refreshed from Google Patents.
Patent US4615903A successfully refreshed from Google Patents.
US4615903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for melt-coating a surface
Assignee: United States Department of the Navy
•
Filing: 1985-07-01
•
Granted: 1986-10-07
•
Expires: 2005-07-01
Abstract
Abstract A method for coating a surface comprises providing an electrostatically charged powder, irradiating the powder with energy until the powder or the surface melts, and allowing the surface to solidify.
Inventors
- 👤 Douglas L. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C26/00; C23C26/02
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
61 words
A method of melt-coating a surface which comprises: providing a powder for forming said coating; electrostatic-charging said powder, said charge being sufficient to provide separation between particles of said powder; placing said electrostatically charged powder on said surface; irradiating said powder with energy until said powder melts and cooling said melted powder below the melting point thereof, thereby coating said surface.
Claim 2
Independent Claim
61 words
A method of melt-coating a surface which comprises: providing a powder for forming said coating; electrostatic-charging said powder, said charge being sufficient to provide separation between particles of said powder; placing said electrostatically charged powder on said surface; irradiating said powder with energy until said powder melts and cooling said melted powder below the melting point thereof, thereby coating said surface.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said powder is irradiated by a laser.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein said powder is irradiated by heat from a heat source.
Claim 5
Dependent Claim
21 words
The method of claim 1 which further comprises electrostatic-charging said surface, thereby providing separation between said static-charged powder and said surface.
Claim 6
Dependent Claim
28 words
The method of claim 4 wherein at least one electrostatically charged field is placed across said surface, thereby containing said powder to a certain region on said surface.
Claim 7
Dependent Claim
32 words
The method of claim 4 wherein said powder is selected from the group consisting of cobalt, nickel, titanium, tantalum and alloys and mixtures thereof and said powder is irradiated with a laser.
Claim 8
Dependent Claim
32 words
The method of claim 5 wherein said powder is selected from the group consisting of cobalt, nickel, titanium, tantalum, and alloys and mixtures thereof and said powder is irradiated with a laser.
Claim 9
Independent Claim
56 words
A method of melt-coating a surface which comprises: placing a powder for forming said coating on said surface; electrostatically charging said powder, said charge being sufficient to provide separation between particles of said powder; irradiating said powder with energy until said powder melts; and cooling said melted powder below the melting point, thereby coating said surface.
Claim 10
Independent Claim
56 words
A method of melt-coating a surface which comprises: placing a powder for forming said coating on said surface; electrostatically charging said powder, said charge being sufficient to provide separation between particles of said powder; irradiating said powder with energy until said powder melts; and cooling said melted powder below the melting point, thereby coating said surface.
Claim 11
Dependent Claim
13 words
The method of claim 8 wherein said powder is irradiated by a laser.
Claim 12
Dependent Claim
20 words
The method of claim 8 which further comprises electrostatic-charging said surface, thereby providing separation between said powder and said surface.
Claim 13
Independent Claim
46 words
A method of melt-coating a surface which comprises: providing an electrostaticly charged powder on said surface; irradiating said powder on said surface with energy until said surface melts, thereby causing said powder to embed into said surface; and cooling said surface below the melting point thereof.
Claim 14
Independent Claim
46 words
A method of melt-coating a surface which comprises: providing an electrostaticly charged powder on said surface; irradiating said powder on said surface with energy until said surface melts, thereby causing said powder to embed into said surface; and cooling said surface below the melting point thereof.
Claim 15
Independent Claim
54 words
A method of melt-coating a metallic surface of steel, aluminum, or a magnesium alloy which comprises: providing an electrostatically charged powder on said surface; irradiating said powder on said surface with energy until said surface melts, thereby causing said powder to embed into said surface; and cooling said surface below the melting point thereof.
Claim 16
Independent Claim
54 words
A method of melt-coating a metallic surface of steel, aluminum, or a magnesium alloy which comprises: providing an electrostatically charged powder on said surface; irradiating said powder on said surface with energy until said surface melts, thereby causing said powder to embed into said surface; and cooling said surface below the melting point thereof.
Claim 17
Dependent Claim
13 words
The method of claim 12 wherein said powder is irradiated by a laser.
Claim 18
Dependent Claim
26 words
The method of claim 13 which further comprises the step of electrostatically charging said surface, thereby providing separation between said electrostatically charged powder and said surface.
Claim 19
Dependent Claim
32 words
The method of claim 14 wherein said powder is selected from the group consisting of a refractory ceramic, cobalt, nickel, titanium, tantalum, alloys of cobalt, nickel, titanium, and tantalum and mixtures thereof.
Claim 20
Dependent Claim
32 words
The method of claim 13 wherein said powder is selected from the group consisting of a refractory ceramic, cobalt, nickel, titanium, tantalum, alloys of cobalt, nickel, titanium, and tantalum and mixtures thereof.
Claim 21
Dependent Claim
26 words
The method of claim 12 which further comprises the step of electrostatically charging said surface, thereby providing separation between said electrostatically charged powder and said surface.
Claim 22
Dependent Claim
32 words
The method of claim 17 wherein said powder is selected from the group consisting of a refractory ceramic, cobalt, nickel, titanium, tantalum, alloys of cobalt, nickel, titanium, and tantalum and mixtures thereof.
Claim 23
Independent Claim
46 words
A method of melt-coating a metallic surface of steel, aluminum or a magnesium alloy which comprises: providing an electrostatically charged powder on said surface; irradiating said powder with energy until said powder melts; cooling said melted powder below the melting point thereof, thereby coating said surface.
Claim 24
Independent Claim
46 words
A method of melt-coating a metallic surface of steel, aluminum or a magnesium alloy which comprises: providing an electrostatically charged powder on said surface; irradiating said powder with energy until said powder melts; cooling said melted powder below the melting point thereof, thereby coating said surface.
Claim 25
Dependent Claim
29 words
The method of claim 19 wherein said powder is irradiated by a laser and is selected from the group consisting of cobalt, nickel, titanium, tantalum, alloys and mixtures thereof.
References Cited (Backward Citations)
US2173484A
Cited
US2462487A
Cited
US2896263A
Cited
US3085025A
Cited
US3451884A
Cited
US3598566A
Cited
US3951063A
Cited
JPS53147534A
Cited
US4200669A
Cited
US4300474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |