Patent US4555942A successfully refreshed from Google Patents.
US4555942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continually controlling the quality of cathode copper
Assignee: Boliden AB
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Filing: 1985-03-27
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Granted: 1985-12-03
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Expires: 2005-03-27
Abstract
Abstract The invention relates to a method for controlling or monitoring the quality of copper cathodes. The method is characterized by stacking cathodes to form a bundle, preferably comprising 10-20 cathodes, and by determining the bulk density, or a value related thereto, of the bundle. The bulk volume or mean height of a cathode bundle can be used with great accuracy. Advantageously, the height of each cathode bundle is measured by means of distance-sensing means of the laser or ultrasonic type placed above the movement path of a cathode bundle.
Inventors
- 👤 Bjorn M. Ludvigsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:57
CPC Classifications
G; G01; G01B; G01B17/00; C; C25; C25C; C25C7/00; C25C7/06; G01B11/00; G01B11/02; G01B11/06; G01B11/0608
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A method for monitoring the quality of electrolytically produced copper cathodes affected by impurity content and surface structure without taking any copper sample, said method comprising: stacking copper cathodes to form a stacked bundle, ascertaining values related to the mass and stacked volume of said bundle for determining a value of bulk density of said bundle, or for determining a value derived from said bulk density, making a comparison of said determined value with predetermined known values, and determining the quality of said stacked copper cathode bundle from said comparison, whereby a determination as to whether the quality of said electrolytically produced copper cathodes in said copper cathode bundle meets a predetermined standard of quality may be made.
Claim 2
Independent Claim
118 words
A method for monitoring the quality of electrolytically produced copper cathodes affected by impurity content and surface structure without taking any copper sample, said method comprising: stacking copper cathodes to form a stacked bundle, ascertaining values related to the mass and stacked volume of said bundle for determining a value of bulk density of said bundle, or for determining a value derived from said bulk density, making a comparison of said determined value with predetermined known values, and determining the quality of said stacked copper cathode bundle from said comparison, whereby a determination as to whether the quality of said electrolytically produced copper cathodes in said copper cathode bundle meets a predetermined standard of quality may be made.
Claim 3
Dependent Claim
27 words
A method according to claim 1, including the step of applying at least one strap to bind said stack before making measurements for determining the stacked volume.
Claim 4
Dependent Claim
29 words
A method according to claim 2, including the step of measuring a mean height of a stacked cathode bundle and using said mean height to determine said stacked volume.
Claim 5
Dependent Claim
31 words
A method according to claim 3, including the step of using distance-measuring means placed above a path of movement of a cathode bundle, for measuring the mean height of said bundle.
Claim 6
Dependent Claim
25 words
A method according to claim 4, wherein the step of using distance-measuring means comprises using distance-sensing means of a laser or ultrasonic type measuring means.
Claim 7
Dependent Claim
29 words
A method according to claim 1, including the step of measuring a mean height of a stacked cathode bundle and using said mean height to determine said stacked volume.
Claim 8
Dependent Claim
31 words
A method according to claim 6, including the step of using distance-measuring means placed above a path of movement of a cathode bundle, for measuring the mean height of said bundle.
Claim 9
Dependent Claim
25 words
A method according to claim 7, wherein the step of using distance-measuring means comprises using distance-sensing means of a laser or ultrasonic type measuring means.
References Cited (Backward Citations)
GB290913A
Cited
US3436968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |