US3928146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating recovery process
Assignee: Winter Products Co
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Filing: 1974-09-06
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Granted: 1975-12-23
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Expires: 1994-09-06
Abstract
Abstract Plating line passes parts from plating tank to insulated portion of dual chamber strike tank so as to cut drag out concentration by one half to further rinse tanks. Solution in certain rinse tanks passed through reverse osmosis cells and recycled to system. Most concentrated product of reverse osmosis cells placed in holding tank and concentrated therein by cycling through another reverse osmosis cell before periodic return to plating bath.
Inventors
- 👤 James P Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:36
CPC Classifications
C; C25; C25D; C25D21/00; C25D21/16; C25D21/18; B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; B01D61/026
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
236 words
IN A PLATING PROCESS WHEREIN ARTICLES ARE PLATED IN A SOLUTION WITHIN A PLATING TANK AND THEREAFTER RINSED IN A SERIES OF AT LEAST THREE RINSE TANKS, THE IMPROVEMENT COMPRISING, PROVIDING A DUAL CHAMBER TANK HAVING AN ELECTRICALLY NONCONDUCTING DIVIDER THEREIN SEPARATING THE DUAL CHAMBER TANK INTO TWO PORTIONS INCLUDING A PLATING PORTION AND A RINSE PORTION, SAID DIVIDER HAVING AN OPENING THEREIN TO PERMIT FLOW OF SOLUTION BETWEEN SAID ONE PORTION OF SAID DUAL CHAMBER TANK AND THE OTHER PORTION THEREOF, PLATING AN ARTICLE IN SAID ONE PORTION OF SAID DUAL CHAMBER TANK, PASSING THE ARTICLE FROM SAID TANK ONE PORTION TO SAID PLATING TANK AND EFFECTING A PLATING ON SAID ARTICLE, PASSING THE ARTICLE FROM SAID PLATING TANK TO THE SAID OTHER PORTION OF SAID DUAL CHAMBER TANK, THEREAFTER PASSING SAID ARTICLE SERIATUM TO SAID RINSE TANKS, CONTINUOUSLY WITHDRAWING SOLUTION FROM THE FIRST OF SAID RINSE TANKS AND SUBJECTING IT TO A FIRST REVERSE OSMOSIS WHILE CONTINUOUSLY PASSING THE CONCENTRATE FROM SAID FIRST REVERSE OSMOSIS TO A HOLDING TANK AND THE PERMEATE TO THE SECOND OF SAID RINSE TANKS, CONTINUOUSLY WITHDRAWING SOLUTION FROM THE THIRD OF SAID RINSE TANKS AND SUBJECTING IT TO A SECOND REVERSE OSMOSIS WHILE CONTINUOUSLY PASSING THE CONCENTRATE FROM SAID SECOND REVERSE OSMOSIS TO SAID SECOND RINSE TANK AND THE PERMEATE TO THE FINAL ONE OF SAID RINSE TANKS, AND RETURNING SOLUTION FROM SAID HOLDING TANK TO SAID PLATING TANK.
Claim 2
Dependent Claim
236 words
IN A PLATING PROCESS WHEREIN ARTICLES ARE PLATED IN A SOLUTION WITHIN A PLATING TANK AND THEREAFTER RINSED IN A SERIES OF AT LEAST THREE RINSE TANKS, THE IMPROVEMENT COMPRISING, PROVIDING A DUAL CHAMBER TANK HAVING AN ELECTRICALLY NONCONDUCTING DIVIDER THEREIN SEPARATING THE DUAL CHAMBER TANK INTO TWO PORTIONS INCLUDING A PLATING PORTION AND A RINSE PORTION, SAID DIVIDER HAVING AN OPENING THEREIN TO PERMIT FLOW OF SOLUTION BETWEEN SAID ONE PORTION OF SAID DUAL CHAMBER TANK AND THE OTHER PORTION THEREOF, PLATING AN ARTICLE IN SAID ONE PORTION OF SAID DUAL CHAMBER TANK, PASSING THE ARTICLE FROM SAID TANK ONE PORTION TO SAID PLATING TANK AND EFFECTING A PLATING ON SAID ARTICLE, PASSING THE ARTICLE FROM SAID PLATING TANK TO THE SAID OTHER PORTION OF SAID DUAL CHAMBER TANK, THEREAFTER PASSING SAID ARTICLE SERIATUM TO SAID RINSE TANKS, CONTINUOUSLY WITHDRAWING SOLUTION FROM THE FIRST OF SAID RINSE TANKS AND SUBJECTING IT TO A FIRST REVERSE OSMOSIS WHILE CONTINUOUSLY PASSING THE CONCENTRATE FROM SAID FIRST REVERSE OSMOSIS TO A HOLDING TANK AND THE PERMEATE TO THE SECOND OF SAID RINSE TANKS, CONTINUOUSLY WITHDRAWING SOLUTION FROM THE THIRD OF SAID RINSE TANKS AND SUBJECTING IT TO A SECOND REVERSE OSMOSIS WHILE CONTINUOUSLY PASSING THE CONCENTRATE FROM SAID SECOND REVERSE OSMOSIS TO SAID SECOND RINSE TANK AND THE PERMEATE TO THE FINAL ONE OF SAID RINSE TANKS, AND RETURNING SOLUTION FROM SAID HOLDING TANK TO SAID PLATING TANK.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said solution is accumulated in said holding tank for predetermined periods of time and periodically returned to said plating tank.
Claim 4
Dependent Claim
27 words
The process of claim 2 including periodically terminating said plating and evaporating solvent from the plating solution prior to the return of solution from said holding tank.
Claim 5
Dependent Claim
38 words
The process of claim 1 comprising withdrawing the solution from said holding tank and subjecting it to a third reverse osmosis while passing the permeate to said third rinse tank and returning the concentrate to said holding tank.
Claim 6
Dependent Claim
42 words
The process of claim 3 wherein said solution in said holding tank periodically is subjected to said third reverse osmosis and at the termination of said third reverse osmosis cycle the solutioN in said holding tank is returned to said plating tank.
Claim 7
Dependent Claim
24 words
The process of claim 5 comprising adding make up solvent to said final rinse tank as said solution is returned to said plating tank.
Claim 8
Dependent Claim
19 words
The process of claim 6 wherein said solution is a brass cyanide plating solution and said solvent is water.
Claim 9
Dependent Claim
129 words
In a plating process wherein articles are plated in a solution within a plating tank and thereafter rinsed in a series of rinse tanks, the improvement comprising, providing a dual chamber tank having an electrically non-conducting divider therein separating the dual chamber tank into two portions, said divider having an opening therein to permit flow of solution between said one portion of said dual chamber tank and the other portion thereof, plating an article in said one portion of said dual chamber tank, passing the article from said tank one portion to said plating tank and effecting a plating of said article, passing the article from said plating tank to the said other portion of said dual chamber tank, and thereafter passing said article seriatum to said rinse tanks.
Claim 10
Dependent Claim
129 words
In a plating process wherein articles are plated in a solution within a plating tank and thereafter rinsed in a series of rinse tanks, the improvement comprising, providing a dual chamber tank having an electrically non-conducting divider therein separating the dual chamber tank into two portions, said divider having an opening therein to permit flow of solution between said one portion of said dual chamber tank and the other portion thereof, plating an article in said one portion of said dual chamber tank, passing the article from said tank one portion to said plating tank and effecting a plating of said article, passing the article from said plating tank to the said other portion of said dual chamber tank, and thereafter passing said article seriatum to said rinse tanks.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |