US3696503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continuously galvanizing steel strip
Assignee: Allied Tube and Conduit Corp
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Filing: 1969-10-28
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Granted: 1972-10-10
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Expires: 1989-10-28
Abstract
Abstract A method of galvanizing strip steel is disclosed in which a continuous strip moving in a horizontal plane, after passing through preparation steps, is caused to enter a bath of molten zinc below the level of the surface of that bath. The strip still moving in a horizontal plane passes through the bath and exits therefrom from a location below the surface. After cooling, the strip may be coiled or partially roll-formed and cut to desired lengths. The disclosure includes the steps of forming or partially forming the strip prior to its entry into the bath.
Inventors
- 👤 Theodore H Krengel
- 👤 Arthur E Ostrowski
- 👤 Anthony J Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:15
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; C23C2/04; C23C2/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
36 words
The method of continuously galvanizing steel strip as set forth in claim 1 in combination with the step of preparing the surface of said strip by washing and pickling prior to its passage into the bath.
Claim 2
Dependent Claim
28 words
The method of continuously galvanizing steel strip as set forth in claim 1 in combination with the step of preheating the strip prior to entry into the bath.
Claim 3
Dependent Claim
38 words
The method of continuously galvanizing steel strip as set forth in Claim 1 including the step of forming said flat strip so as to have downwardly sloping sides and exposed edges prior to its entry into the bath.
Claim 4
Dependent Claim
33 words
The method of continuously galvanizing steel strip as set forth in claim 4 in combination with the step of reforming the strip so as to be flat after its exit from the bath.
Claim 5
Dependent Claim
37 words
The method of continuously galvanizing steel strip as set forth in claim 1 in combination with the step of partially forming said strip to a desired configuration with exposed edges prior to its entry into the bath.
Claim 6
Dependent Claim
34 words
The method of continuously galvanizing strip steel as set forth in claim 6 in combination with the step of forming the partially formed strip to a desired configuration after its exit from the bath.
Claim 7
Dependent Claim
30 words
The method of continuously galvanizing steel strip as set forth in claim 1 wherein the strip is passed into an agitated bath of molten zinc maintained in a non-oxidizing atmosphere.
References Cited (Backward Citations)
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |