US3883403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for cathode stripping
Assignee: Huntington Alloys Corp
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Filing: 1973-10-04
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Granted: 1975-05-13
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Expires: 1993-10-04
Abstract
Abstract Disclosed is apparatus and a method for stripping electrodeposits from cathode blanks which apparatus comprises a conveyor for conveying cathodes to a stripping station, a stripping mechanism for stripping electrodeposits from the cathode blanks, quenching devices in the stripping station, a control device for controlling the quenching device so that quenching commences after the stripping mechanism engages the electrodeposit but before the stripping mechanism is activated, and conveyors for conveying stripped electrodeposits and cathode blanks from the stripping station.
Inventors
- 👤 Victor Alexander Ettel
- 👤 Christopher Charles Dunkley
- 👤 Jose Antonio Blanco
- 👤 Robert Ray Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:05
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/06; C25C7/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
205 words
In an apparatus for stripping cathodes, the cathode comprising a cathode blank and a metallic electrodeposit on the cathode blank, said electrodeposit having been applied at an electrodeposit bath temperature, which apparatus includes a stripping station, means for conveying cathodes to the stripping station, means for indexing the cathode in and for removing the cathode blank from the stripping station, means for conveying the cathode blank from the stripping station and means for conveying stripped electrodeposit from the stripping station, the improvement which comprises support means in the stripping station for supporting the cathode, gripping means in the stripping station for gripping the electrodeposit, thermal means for maintaining the temperature of the electrodeposit substantially at the bath temperature until the gripping means have engaged the cathode in the stripping station, thermal means for rapidly altering the temperature of the electrodeposit after the gripping means have engaged the electrodeposit to thermally part the electrodeposit from the cathode blank, control means for activating the thermal means only after the gripping means have engaged the electrodeposit and for deactivating the thermal means after the electrodeposit is parted from the cathode blank and stripping means affixed to the gripping means for stripping the parted electrodeposit from the cathode blank.
Claim 2
Dependent Claim
205 words
In an apparatus for stripping cathodes, the cathode comprising a cathode blank and a metallic electrodeposit on the cathode blank, said electrodeposit having been applied at an electrodeposit bath temperature, which apparatus includes a stripping station, means for conveying cathodes to the stripping station, means for indexing the cathode in and for removing the cathode blank from the stripping station, means for conveying the cathode blank from the stripping station and means for conveying stripped electrodeposit from the stripping station, the improvement which comprises support means in the stripping station for supporting the cathode, gripping means in the stripping station for gripping the electrodeposit, thermal means for maintaining the temperature of the electrodeposit substantially at the bath temperature until the gripping means have engaged the cathode in the stripping station, thermal means for rapidly altering the temperature of the electrodeposit after the gripping means have engaged the electrodeposit to thermally part the electrodeposit from the cathode blank, control means for activating the thermal means only after the gripping means have engaged the electrodeposit and for deactivating the thermal means after the electrodeposit is parted from the cathode blank and stripping means affixed to the gripping means for stripping the parted electrodeposit from the cathode blank.
Claim 3
Dependent Claim
13 words
The apparatus described in claim 1 wherein the gripping means are suction pads.
Claim 4
Dependent Claim
41 words
The apparatus described in claim 1 wherein the thermal means includes at least one nozzle directed at the electrodeposit, a quenchant source and means for conveying quenchant from the source to the nozzle for rapidly lowering the temperature of the electrodeposit.
Claim 5
Dependent Claim
103 words
A PROCESS FOR ELECTRODEPOSITING A NON-FERROUS METAL ON A CATHODE BLANK AND SUBSEQUENTLY STRIPPING THE ELECTRODEPOSITING A FROM THE CATHODE BLANK WHICH COMPRISES ELECTRODEPOSITING A NON-FERROUS METAL ON A CATHODE BLANK IN AN ELECTROLYTIC CELL, SAID CATHODE BLANK AND ELECTRODEPOSIT HAVING DIFFERENT COEFFICIENTS OF THERMAL EXPANSION, AND SAID ELECTROLYTIC CELL CONTAINING ELECTROLYTE THAT IS MAINTAINED AT A PREDETERMINED TEMPERATURE, TO FORM A CATHODE COMPRISING THE CATHODE BLANK AND AN ELECTRODEPOSIT OF PRESELECTED THICKNESS THEREON OF AT LEAST ABOUT ONE-SIXTEENTH INCH THICKNESS, REMOVING THE CATHODE FROM THE ELECTROLYTIC CELL, CONVEYING THE CATHODE TO A STRIPPING STATION WHILE MAINTAINING THE TEMPERATURE OF THE CATHODE AT
Claim 6
Dependent Claim
103 words
A PROCESS FOR ELECTRODEPOSITING A NON-FERROUS METAL ON A CATHODE BLANK AND SUBSEQUENTLY STRIPPING THE ELECTRODEPOSITING A FROM THE CATHODE BLANK WHICH COMPRISES ELECTRODEPOSITING A NON-FERROUS METAL ON A CATHODE BLANK IN AN ELECTROLYTIC CELL, SAID CATHODE BLANK AND ELECTRODEPOSIT HAVING DIFFERENT COEFFICIENTS OF THERMAL EXPANSION, AND SAID ELECTROLYTIC CELL CONTAINING ELECTROLYTE THAT IS MAINTAINED AT A PREDETERMINED TEMPERATURE, TO FORM A CATHODE COMPRISING THE CATHODE BLANK AND AN ELECTRODEPOSIT OF PRESELECTED THICKNESS THEREON OF AT LEAST ABOUT ONE-SIXTEENTH INCH THICKNESS, REMOVING THE CATHODE FROM THE ELECTROLYTIC CELL, CONVEYING THE CATHODE TO A STRIPPING STATION WHILE MAINTAINING THE TEMPERATURE OF THE CATHODE AT
Claim 7
Dependent Claim
27 words
The process described in claim 4 wherein the non-ferrous metal is at least one member selected from the group consisting of copper, nickel, cobalt, zinc and manganese.
Claim 8
Dependent Claim
30 words
The process as described in claim 4 wherein the cathode blank and the electrodeposit have a minimum difference in their coefficients of thermal expansion of at least about 10 percent.
Claim 9
Dependent Claim
29 words
The process as described in claim 6 wherein the cathode blank is made of a metal selected from the group consisting of wrought copper, aluminum, stainless steel, or titanium.
Claim 10
Dependent Claim
21 words
The process as described in claim 6 wherein the working surface of the cathode blank is coated with a parting compound.
Claim 11
Dependent Claim
29 words
The process as described in claim 6 wherein the parting compound is at least one member selected from the group consisting of oil, metallic soaps, grease, stearates and resinS.
Claim 12
Dependent Claim
29 words
The process as described in claim 4 wherein the electrolyte contains a stress-inducing reagent in small but effective amounts to induce internal stresses in the electrodeposit to promote parting.
Claim 13
Dependent Claim
93 words
The process as described in claim 4 wherein the non-ferrous metal is copper, the electrolyte contains copper salts and a stress-inducing reagent in small but effective amounts to induce internal stresses in the electrodeposit and heated to a temperature between about 60* and 70*C., the cathode blank is made of a metal selected from the group consisting of wrought copper, stainless steel and titanium and its working surface is coated with a parting compound and the electrodeposit is quenched with water to lower its temperature to less than about 40*C. to promote parting.
Claim 14
Dependent Claim
94 words
The process as described in claim 4 wherein the non-ferrous metal is nickel, the electrolyte contains nickel salts and a stress-inducing reagent in small but effective amounts to induce internal stresses in the electrodeposit and heated to a temperature between about 60* and 70*C., the cathode blank is made of a metal selected from the group consisting of wrought nickel, aluminum, stainless steel and titanium and its working surface is coated with a parting compound and the electrodeposit is quenched with water to lower its temperature to less than about 40*C. to promote parting.
Claim 15
Dependent Claim
69 words
The process as described in claim 4 wherein the non-ferrous metal is nickel, the electrolyte contains nickel salts and is heated to a temperature between about 60* and 70*C., the cathode blank is made of a metal selected from the group consisting of wrought nickel, aluminum, stainless steel and titanium and the electrodeposit is quenched with water to lower its temperature to less than about 40*C. to promote parting.
Claim 16
Dependent Claim
24 words
The process described in claim 7 wherein the cathode blank has a working surface roughness of from about 5 to about 250 microinches RMS.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |