US3926767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic treating apparatus
Assignee: United States Steel Corp
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Filing: 1975-01-21
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Granted: 1975-12-16
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Expires: 1995-01-21
Abstract
Abstract An electrolytic treating apparatus employing the principle of high-current density bi-polar electrolyzing, wherein the current is conducted from the electrodes through the electrolyte to the metal strip being treated. The efficiency of the resulting electrolyzing treatment is enhanced by employing (a) electrodes of a generally circular cross-section and (b) offset electrode positioning, so that the electrodes facing the top surface of the strip do not overlie the electrodes facing the bottom surface of the strip.
Inventors
- 👤 Edward C Brendlinger
- 👤 Richard F Higgs
- 👤 Issa J Kharouf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
C; C25; C25F; C25F1/00; C25F7/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
AN APPARATUS FOR THE ELECTROLYTIC TREATMENT OF METAL STRIP WITHIN AN ELECTROLYTE BATH, COMPRISING: A. MEANS FOR GUIDING SAID STRIP IN A SUBSTANTIALLY HORIZONTAL PLANE, THROUGH SAID BATH, B. A NUMBER, N, OF ELECTRODE PAIR CONFIGURATIONS, N BEING AT LEAST 2, IN WHICH THE ELECTRODES FORMING EACH OF SAID PAIRS ARE, I. IN AN ELECTROTREATING POSITION, WITH ONE ELECTRODE OF SAID PAIR ABOVE SAID SUBSTANTIALLY HORIZONTAL PLANE AND THE OTHER ELECTRODE OF SAID PAIR BELOW SAID SUBSTANTIALLY HORIZONTAL PLANE, II. OFFSET FROM EACH OTHER SO THAT THE DISTANCE BETWEEN THEIR THE SUM OF THEIR CROSS-SECTIONAL WIDTHS/2, AND THAN THE SUM OF THEIR CROSS-SECTIONAL L WIDTHS/2, AND III. THE PORTION OF THOSE ELECTRODES FACING THE TOP SURFACE OF THE STRIP, EXHIBITS A CONVEX SHAPE WITH RESPECT TO SAID TOP SURFACE;
Claim 2
Independent Claim
129 words
AN APPARATUS FOR THE ELECTROLYTIC TREATMENT OF METAL STRIP WITHIN AN ELECTROLYTE BATH, COMPRISING: A. MEANS FOR GUIDING SAID STRIP IN A SUBSTANTIALLY HORIZONTAL PLANE, THROUGH SAID BATH, B. A NUMBER, N, OF ELECTRODE PAIR CONFIGURATIONS, N BEING AT LEAST 2, IN WHICH THE ELECTRODES FORMING EACH OF SAID PAIRS ARE, I. IN AN ELECTROTREATING POSITION, WITH ONE ELECTRODE OF SAID PAIR ABOVE SAID SUBSTANTIALLY HORIZONTAL PLANE AND THE OTHER ELECTRODE OF SAID PAIR BELOW SAID SUBSTANTIALLY HORIZONTAL PLANE, II. OFFSET FROM EACH OTHER SO THAT THE DISTANCE BETWEEN THEIR THE SUM OF THEIR CROSS-SECTIONAL WIDTHS/2, AND THAN THE SUM OF THEIR CROSS-SECTIONAL L WIDTHS/2, AND III. THE PORTION OF THOSE ELECTRODES FACING THE TOP SURFACE OF THE STRIP, EXHIBITS A CONVEX SHAPE WITH RESPECT TO SAID TOP SURFACE;
Claim 3
Dependent Claim
35 words
The apparatus of claim 1, in which said electrode portions exhibiting a convex cross-section are substantially semicircular, and said d-c source of EMF is adapted to supply a current density of at least 2000 Amps/ft2.
Claim 4
Dependent Claim
12 words
The apparatus of claim 2, in which n is an odd number.
Claim 5
Dependent Claim
20 words
The apparatus of claim 3, in which the electrodes above said substantially horizontal plane are of a generally cylindrical shape.
Claim 6
Dependent Claim
16 words
The apparatus of claim 4, in which all the electrodes are of a generally cylindrical shape.
Claim 7
Dependent Claim
27 words
The apparatus of claim 5, in which the cross-sectional area of all positively charged electrodes is approximately equal to the cross-sectional area of all negatively charged electrodes.
Claim 8
Dependent Claim
41 words
The apparatus of claim 6, including electrolyte flow headers for increasing solution turbulence near those portions of the strip surfaces undergoing maximum electrochemical activity, whereby concentration polarization is decreased at least to extent sufficient to support current densities within said range.
References Cited (Backward Citations)
US2165326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |