US4317845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One side surface molten metallic coating method and apparatus thereof
Assignee: Nihon Parkerizing Co Ltd
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Filing: 1980-04-01
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Granted: 1982-03-02
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Expires: 2000-04-01
Abstract
Abstract One side surface of a continuous metal strip is continuously brought into contacted with a surface of a molten metal bath. The surface of the molten metal bath is flowed to the directions departing from both edges of the strip by a linear induction motor dipped in the bath. A one side surface metal coated product having no deposition of a molten metal on the reverse surface is obtained by the method of the present invention.
Inventors
- 👤 Kunihiko Karasawa
- 👤 Tokushiro Hosoda
- 👤 Hiroshi Mase
- 👤 Yasuo Sato
- 👤 Shoji Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:18
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/003; C23C2/0034; C23C2/0035; C23C2/006; C23C2/0062
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
124 words
A method for one side metallic coating of a continuous metal strip with metal from a metal bath having a normal surface comprising: moving said metal strip in a running direction through a metallic coating contact area; maintaining said metal strip, in said contact area, substantially linear in a direction transverse to said running direction; and utilizing linear induction motor means in said bath to move the molten metal adjacent said normal surface in a second direction at least adjacent the transverse edges of said metal strip, said second direction having a component transverse to said running direction, and said second direction being entirely in the plane of said surface, whereby one entire surface of said metal strip is contacted with said molten metal.
Claim 2
Independent Claim
124 words
A method for one side metallic coating of a continuous metal strip with metal from a metal bath having a normal surface comprising: moving said metal strip in a running direction through a metallic coating contact area; maintaining said metal strip, in said contact area, substantially linear in a direction transverse to said running direction; and utilizing linear induction motor means in said bath to move the molten metal adjacent said normal surface in a second direction at least adjacent the transverse edges of said metal strip, said second direction having a component transverse to said running direction, and said second direction being entirely in the plane of said surface, whereby one entire surface of said metal strip is contacted with said molten metal.
Claim 3
Dependent Claim
23 words
A method according to claim 1 wherein said molten metal surface is flowed by said linear induction motor placed below said molten metal.
Claim 4
Dependent Claim
24 words
A method according to claim 1 wherein the flow velocity of said molten metal surface is in a range of 0.2 to 0.6 m/sec.
Claim 5
Dependent Claim
35 words
A method according to claim 3 wherein said molten metal surface is induced to flow by said linear induction motor means placed at a position of 3 to 40 mm below said molten metal surface.
Claim 6
Dependent Claim
53 words
A method according to claim 4 wherein said molten metal surface is induced to flow by said linear induction motor means placed at a position in a range of from 300 mm inwardly from a transverse edge of said metal strip to 400 mm outwardly from a transverse edge of said metal strip.
Claim 7
Dependent Claim
18 words
A method according to claim 1 wherein said molten metal is made of zinc as a main component.
Claim 8
Independent Claim
134 words
An apparatus for one side metallic coating of a continuous metal strip, comprising: a bath vessel for containing a molten metal bath having a normal surface; means for moving said metal strip in a running direction through a metallic coating contact area, the surface of said metal strip in said contact area being held substantially linear in a direction transverse to said running direction; and linear induction motor means in said bath and adapted to move the molten metal adjacent said normal surface in a second direction at least adjacent the transverse edges of said metal strip, said second direction having a component transverse to said running direction, and said second direction being entirely in the plane of said surface, whereby one entire surface of said metal strip is contacted with said molten metal.
Claim 9
Independent Claim
134 words
An apparatus for one side metallic coating of a continuous metal strip, comprising: a bath vessel for containing a molten metal bath having a normal surface; means for moving said metal strip in a running direction through a metallic coating contact area, the surface of said metal strip in said contact area being held substantially linear in a direction transverse to said running direction; and linear induction motor means in said bath and adapted to move the molten metal adjacent said normal surface in a second direction at least adjacent the transverse edges of said metal strip, said second direction having a component transverse to said running direction, and said second direction being entirely in the plane of said surface, whereby one entire surface of said metal strip is contacted with said molten metal.
Claim 10
Dependent Claim
46 words
An apparatus according to claim 7 wherein said linear induction motor means includes a horizontal part which is in parallel to the plane of said normal molten metal surface and a connecting slanted part which is downwardly slanted adjacent the central part of said metal strip.
Claim 11
Dependent Claim
57 words
An apparatus according to claim 8 wherein said horizontal part of said linear induction motor is placed at a position in a range of from between 100 to 300 mm inwardly from a transverse edge of said metal strip to a range of from between 100 to 400 mm outwardly from an edge of said deflector roll.
Claim 12
Dependent Claim
36 words
An apparatus according to claim 7 wherein said roll is placed at a position in a range of from 2 mm above said normal molten metal surface to 40 mm below said normal molten metal surface.
Claim 13
Dependent Claim
49 words
The apparatus of claim 10 including: means for maintaining said molten bath at a desired temperature; a seal case over said bath for maintaining a non-oxidizable atmosphere over said bath surface; and at least one roll for deflecting said strip, moving in said running direction, into said contact area.
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) | 1985-03-01 | 1985-08-31 | 1986-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-01 | 1989-08-31 | 1990-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-01 | 1993-08-31 | 1994-03-02 | $7700.00 | Window Closed / Lapsed |