Patent US4302483A successfully refreshed from Google Patents.
US4302483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallizing of a corrodible metal with a protective metal
Assignee: Kidd Creek Mines Ltd
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Filing: 1980-05-21
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Granted: 1981-11-24
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Expires: 2000-05-21
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). One embodiment of the invention 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. A second embodiment of the invention comprises melting the metal to be deposited, propelling a stream of the melted metal towards the base metal through a nozzle containing a non-consumable stationary electrode, and applying a potential difference between the molten metal and the electrode 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
2026-10-25 04:52
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; C; C23; C23C; C23C4/00; C23C4/12; C23C4/123
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
156 words
Apparatus for spray metallizing a substrate comprising; an electrically isolated container for holding metal to be sprayed; a molten metal nozzle within a molten metal nozzle assembly for causing a stream of charged molten metal functioning as a consumable non-stationary electrode to exit as a jet stream within an oppositely charged non-consumable stationary electrode; a low pressure gas source between the molten metal nozzle and the non-consumable stationary electrode to stabilize the electric arc; a high pressure gas source between the non-consumable stationary electrode and the outer cap of said molten metal nozzle for propelling the metal from the electric arc to the surface to be metalized; a conduit for conveying molten metal from the container to the molten metal nozzle; means for causing molten metal to flow from a container through a conduit to a nozzle; and, a power supply to cause an arc between the stream of molten metal and the non-consumable stationary electrode.
Claim 2
Dependent Claim
156 words
Apparatus for spray metallizing a substrate comprising; an electrically isolated container for holding metal to be sprayed; a molten metal nozzle within a molten metal nozzle assembly for causing a stream of charged molten metal functioning as a consumable non-stationary electrode to exit as a jet stream within an oppositely charged non-consumable stationary electrode; a low pressure gas source between the molten metal nozzle and the non-consumable stationary electrode to stabilize the electric arc; a high pressure gas source between the non-consumable stationary electrode and the outer cap of said molten metal nozzle for propelling the metal from the electric arc to the surface to be metalized; a conduit for conveying molten metal from the container to the molten metal nozzle; means for causing molten metal to flow from a container through a conduit to a nozzle; and, a power supply to cause an arc between the stream of molten metal and the non-consumable stationary electrode.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 in which the components of the molten metal nozzle assembly are electrically isolated from each other.
Claim 4
Dependent Claim
26 words
The apparatus of claim 2 in which the components of the molten metal nozzle assembly are electrically isolated from each other in a ceramic outer casing.
Claim 5
Dependent Claim
24 words
The apparatus of claim 1 in which the means for causing the molten metal to flow to the molten metal nozzle is a pump.
Claim 6
Dependent Claim
27 words
The apparatus of claim 1 in which the means for causing molten metal to flow to the molten metal nozzle is pressure applied to the liquid metal.
Claim 7
Dependent Claim
21 words
The apparatus of claim 1 comprising means for connecting the power supply to the molten metal and the non-consumable stationary electrode.
Claim 8
Dependent Claim
16 words
The apparatus of claim 1 in which the power supply comprises a source of DC power.
Claim 9
Dependent Claim
63 words
The apparatus of claim 1 wherein the components of the molten metal nozzle assembly are electrically isolated from each other; wherein the means for causing the molten metal to flow to the nozzle is a pump; and wherein the power supply comprises a source of DC power and means for connecting the power supply to the molten metal and the non-consumable stationary electrode.
Claim 10
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 11
Independent Claim
75 words
A method of spray metallizing a substrate which includes the steps of: melting the metal to be deposited in a container; propelling a stream of the molten metal through a molten metal nozzle towards the substrate; and applying a potential difference between the charged molten metal stream functioning as a consumable non-stationary electrode and a non-consumable stationary electrode surrounding the molten metal nozzle to form an arc whereby superheated particles are deposited on the substrate.
Claim 12
Independent Claim
75 words
A method of spray metallizing a substrate which includes the steps of: melting the metal to be deposited in a container; propelling a stream of the molten metal through a molten metal nozzle towards the substrate; and applying a potential difference between the charged molten metal stream functioning as a consumable non-stationary electrode and a non-consumable stationary electrode surrounding the molten metal nozzle to form an arc whereby superheated particles are deposited on the substrate.
Claim 13
Dependent Claim
28 words
The method for spray metallizing of claim 10 including the step of directing a high pressure gas source at the point of the arc and towards the substrate.
Claim 14
Dependent Claim
32 words
The method of spray metallizing of claim 10 including the step of moving the surface of the substrate past the point of arc to spread the deposited metal in a continuous coating.
Claim 15
Dependent Claim
19 words
The method of claim 10 in which the molten metal is supplied to the molten metal nozzle under pressure.
Claim 16
Dependent Claim
17 words
The method of claim 13 in which the molten metal is pumped to the molten metal nozzle.
Claim 17
Dependent Claim
29 words
The method of claim 10 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 18
Dependent Claim
17 words
The method of claim 10 wherein the substrate is steel; and wherein the molten metal is zinc.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |