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US4139429A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrolytic cell

Assignee: Lancy International Inc
•
Filing: 1978-06-15
•
Granted: 1979-02-13
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Expires: 1998-06-15
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Abstract

Abstract An electrolytic plating cell is provided, wherein by means of flow directional baffle arrangements a rapid, uniform parallel movement of the electrolyte past all electrode surfaces can be maintained, while minimizing energy losses in moving the electrolyte.

Inventors

  • 👤 Frederick A. Steward
  • 👤 James H. Weet

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 01:25
CPC Classifications
C; C25; C25C; C25C1/00; C25C7/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 251 words
An electrolytic cell which comprises: a cell tank adapted to contain an electrolyte and having two side walls, two arcuate end walls and a bottom; adjacent to each arcuate end wall an impeller casing extending vertically to the bottom of the tank and having an arcuate inner surface, which faces the arcuate end wall; a substantially centrally disposed baffle extending horizontally between the two impeller casings and vertically to the bottom of the tank; an impeller rotatably disposed within each of said impeller casings; means for rotating each of said impellers and imparting a recirculating flow to said electrolyte in the cell around the centrally disposed baffle; in each space between the centrally disposed baffle and an adjacent side wall at least one removable cathode disposed parallelly with the centrally disposed baffle and with said side wall, each cathode having two vertical surfaces and two vertical side edges; on each side of a cathode an anode parallelly and equidistantly spaced from said cathode, each anode having two vertical surfaces and two vertical side edges; vertical non-conductive vanes disposed unattachedly from those vertical side edges of said cathode and of any anode interspaced between two cathodes, which side edges face the direction of flow of the recirculating electrolyte, said vanes extending partially towards the arcuate end walls of the tank; positioning adjustment means for said vanes to substantially proportion the flow of recirculating electrolyte through each of the channels formed by adjacent anodes and cathodes, and means for electrically energizing the cell.
Claim 2
Dependent Claim 251 words
An electrolytic cell which comprises: a cell tank adapted to contain an electrolyte and having two side walls, two arcuate end walls and a bottom; adjacent to each arcuate end wall an impeller casing extending vertically to the bottom of the tank and having an arcuate inner surface, which faces the arcuate end wall; a substantially centrally disposed baffle extending horizontally between the two impeller casings and vertically to the bottom of the tank; an impeller rotatably disposed within each of said impeller casings; means for rotating each of said impellers and imparting a recirculating flow to said electrolyte in the cell around the centrally disposed baffle; in each space between the centrally disposed baffle and an adjacent side wall at least one removable cathode disposed parallelly with the centrally disposed baffle and with said side wall, each cathode having two vertical surfaces and two vertical side edges; on each side of a cathode an anode parallelly and equidistantly spaced from said cathode, each anode having two vertical surfaces and two vertical side edges; vertical non-conductive vanes disposed unattachedly from those vertical side edges of said cathode and of any anode interspaced between two cathodes, which side edges face the direction of flow of the recirculating electrolyte, said vanes extending partially towards the arcuate end walls of the tank; positioning adjustment means for said vanes to substantially proportion the flow of recirculating electrolyte through each of the channels formed by adjacent anodes and cathodes, and means for electrically energizing the cell.
Claim 3
Dependent Claim 40 words
The electrolytic cell of claim 1 in which the vanes have arcuate shapes at least at the portions which are closest to the end walls, the arcuate shapes of the vanes conforming to the shape of the arcuate end walls.
Claim 4
Dependent Claim 18 words
The electrolytic cell of claim 1 wherein sparger means are disposed in the bottom portion of the tank.
Claim 5
Dependent Claim 23 words
The electrolytic cell of claim 1, wherein the space between the surfaces of adjacent anodes and cathodes is at least about 2 inches.
Claim 6
Dependent Claim 25 words
The electrolytic cell of claim 1 wherein the space between the surfaces of adjacent anodes and cathodes is between about 3 to about 6 inches.
Claim 7
Dependent Claim 20 words
A process employing the cell of claim 1, for electrodepositing metal values on the cathodes thereof while recirculating electrolyte therethrough.
Claim 8
Dependent Claim 16 words
The process of claim 6, wherein current densitites of about at least 40 amps/sq.ft. are employed.

References Cited (Backward Citations)

US1483722A Cited
US3415732A Cited
US3558455A Cited
US4022678A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-12 1982-08-14 1983-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-12 1986-08-14 1987-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-12 1990-08-14 1991-02-13 $7700.00 Window Closed / Lapsed

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