US4269867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallizing of a corrodible metal with a protective metal
Assignee: Kidd Creek Mines Ltd
•
Filing: 1979-09-04
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Granted: 1981-05-26
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Expires: 1999-09-04
Abstract
Abstract An apparatus and method for spray metallizing a coating of metal (e.g. zinc) onto one or both sides of a base metal (e.g. steel) which comprises melting the metal to be deposited, propelling first and second streams of the melted metal towards the base metal at a point of convergence adjacent to the substrate, and applying a potential difference between the streams to form an electric arc whereby superheated particles are deposited on the base metal.
Inventors
- 👤 Kenneth J. Altorfer
- 👤 Daniel R. Marantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:33
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/12; B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; C23C4/123
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
Apparatus for spray metallizing a substrate comprising: at least two electrically isolated containers for holding molten metal to be sprayed; a pair of nozzles for causing two streams of molten metal to converge at a point adjacent to the surface to be metallized; a spray nozzle behind the point of convergence of the two streams for supplying gas to the streams at the point of convergence for propelling the metal from the point of convergence to the surface to be metallized; conduits for conveying molten metal from the containers to each of the pair of nozzles; means for causing a molten metal to flow from a container through a conduit to a nozzle; and a power supply for electrifying the streams of molten metal to cause an arc at the point of convergence.
Claim 2
Dependent Claim
133 words
Apparatus for spray metallizing a substrate comprising: at least two electrically isolated containers for holding molten metal to be sprayed; a pair of nozzles for causing two streams of molten metal to converge at a point adjacent to the surface to be metallized; a spray nozzle behind the point of convergence of the two streams for supplying gas to the streams at the point of convergence for propelling the metal from the point of convergence to the surface to be metallized; conduits for conveying molten metal from the containers to each of the pair of nozzles; means for causing a molten metal to flow from a container through a conduit to a nozzle; and a power supply for electrifying the streams of molten metal to cause an arc at the point of convergence.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 in which the pair of nozzles for causing the streams to converge is formed in a block of electrically non-conducting material.
Claim 4
Dependent Claim
16 words
The apparatus of claim 2 in which the block of electrically non-conducting material is a ceramic.
Claim 5
Dependent Claim
20 words
The apparatus of claim 2 in which the spray nozzle is also formed in the block of electrically non-conducting material.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 in which the means for causing the molten metal to flow to a nozzle is a pump.
Claim 7
Dependent Claim
26 words
The apparatus of claim 1 in which the means for causing the molten metal to flow to a nozzle is pressure applied to the liquid metal.
Claim 8
Dependent Claim
19 words
The apparatus of claim 1 in which each container and the associated conduit is electrically isolated from the other.
Claim 9
Dependent Claim
18 words
The apparatus of claim 7 comprising means for connecting the power supply to molten metal in each container.
Claim 10
Dependent Claim
16 words
The apparatus of claim 1 in which the power supply comprises a source of DC power.
Claim 11
Dependent Claim
109 words
The apparatus of claim 1 wherein the pair of nozzles for causing the streams to converge and the spray nozzle are formed in a block of electrically non-conducting material; wherein the means for causing the molten metal to flow to the nozzles is a pump; wherein there are at least two containers for holding molten metal and a separate conduit for connecting each container to one nozzle of the pair of nozzles and each container and the associated conduit is electrically isolated from the other; and wherein the power supply comprises a source of DC power and means for connecting the power supply to molten metal in each container.
Claim 12
Dependent Claim
29 words
The apparatus of claim 1 wherein the substrate is steel; and wherein the molten metal is zinc, aluminum, nickel, stainless steel, or an alloy capable of metallizing the substrate.
Claim 13
Independent Claim
66 words
A method for spray metallizing a substrate which includes the steps of: melting the metal to be deposited in at least two electrically isolated containers; propelling first and second streams of the molten metal towards the substrate at a point of convergence adjacent to the substrate; and applying a potential difference between the streams to form an arc whereby superheated particles are deposited on the substrate.
Claim 14
Independent Claim
66 words
A method for spray metallizing a substrate which includes the steps of: melting the metal to be deposited in at least two electrically isolated containers; propelling first and second streams of the molten metal towards the substrate at a point of convergence adjacent to the substrate; and applying a potential difference between the streams to form an arc whereby superheated particles are deposited on the substrate.
Claim 15
Dependent Claim
26 words
The method for spray metallizing of claim 12 including the step of directing a jet of air at the point of convergence and towards the substrate.
Claim 16
Dependent Claim
32 words
The method for spraying metallizing of claim 12 including the step of moving the surface of the substrate past the point of convergence to spread the deposited metal in a continuous coating.
Claim 17
Dependent Claim
28 words
The method of claim 12 in which the metal to be deposited is melted in separate bodies and conducted, in separate electrified streams, to the point of convergence.
Claim 18
Dependent Claim
17 words
The method of claim 12 in which the molten metal is supplied to spray nozzles under pressure.
Claim 19
Dependent Claim
15 words
The method of claim 16 in which the molten metal is pumped to each nozzle.
Claim 20
Dependent Claim
24 words
The method of claim 12 in which pressure is applied to the molten metal in separate melting containers to propel it towards the nozzles.
Claim 21
Dependent Claim
29 words
The method of claim 12 wherein the substrate is steel; and wherein the molten metal is zinc, aluminum, nickel, stainless steel, or an alloy capable of metallizing the substrate.
Claim 22
Dependent Claim
17 words
The method of claim 12 wherein the substrate is steel; and wherein the molten metal is zinc.
References Cited (Backward Citations)
US1221104A
Cited
US1769363A
Cited
US2972185A
Cited
US3246114A
Cited
US3114826A
Cited
US3546415A
Cited
US3947607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |