US4193846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing process of a thin metal sheet by electrolytic deposit
Assignee: Halgar Ets
•
Filing: 1978-08-03
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Granted: 1980-03-18
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Expires: 1998-08-03
Abstract
Abstract Manufacturing process of a thin metal sheet, comprising depositing the metal by electrolysis from a bath containing an aqueous solution of a salt of this metal onto a mobile cathode formed by a rotating drum partially immersed in this bath, removing the metal sheet thus deposited from the non-immersed part of the drum, and replacing in the bath the metal deposited by electrolytic dissolution of an anode containing the same metal. The temperature of the bath is kept higher than its normal boiling point by maintaining on top of the bath a pressure at least equal to the boiling pressure.
Inventors
- 👤 Fred Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:03
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
Manufacturing process of a thin metal sheet, comprising depositing the metal by electrolysis from a bath containing an aqueous solution of a salt of this metal onto a mobile cathode formed by a rotating drum partially immersed in this bath, removing the metal sheet thus deposited from the non-immersed part of the drum, and replacing in the bath the metal deposited by electrolytic dissolution of an anode containing the same metal, the temperature of the bath being kept higher than its normal boiling point by maintaining on top of the bath a pressure at least equal to the boiling pressure.
Claim 2
Dependent Claim
100 words
Manufacturing process of a thin metal sheet, comprising depositing the metal by electrolysis from a bath containing an aqueous solution of a salt of this metal onto a mobile cathode formed by a rotating drum partially immersed in this bath, removing the metal sheet thus deposited from the non-immersed part of the drum, and replacing in the bath the metal deposited by electrolytic dissolution of an anode containing the same metal, the temperature of the bath being kept higher than its normal boiling point by maintaining on top of the bath a pressure at least equal to the boiling pressure.
Claim 3
Dependent Claim
26 words
Process according to claim 1, wherein the bath circulates constantly through a separate tank to remove by filtration and/or sedimentation all non-dissolved material in the bath.
Claim 4
Dependent Claim
42 words
Process according to claim 1 or claim 2, wherein the bath is injected into the said tank by decreasing the bath pressure down to the atmospheric pressure, and the water vapour thus released is collected to heat the bath during the electrolysis.
Claim 5
Dependent Claim
12 words
Process according to claim 1, characterized in that the drum is heated.
Claim 6
Dependent Claim
29 words
Process according to claim 1, characterized in that a permeable membrane for the salt of the metal is placed between the anode and the drum serving as a cathode.
Claim 7
Dependent Claim
29 words
Process according to claim 1, characterized in that a permeable screen for the salt of the metal is placed between the anode and the drum serving as a cathode.
Claim 8
Dependent Claim
17 words
Process according to claim 2, characterized in that the bath circulating in the said tank is cooled.
Claim 9
Dependent Claim
28 words
Process according to claim 1, characterized in that the surface of the rotative cathode is partially masked in order to obtain a thin metal sheet presenting a pattern.
References Cited (Backward Citations)
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Cited
US3817843A
Cited
SU442236A1
Cited
US4077863A
Cited
US4129492A
Cited
US4076597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |