US2530967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright alloy plating
Assignee: Westinghouse Electric Corp
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Filing: 1947-09-09
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Granted: 1950-11-21
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Expires: 1967-09-09
Abstract
No abstract record available.
Inventors
- 👤 George W Jernstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
THE METHOD OF ELECTRODEPOSITING BRIGHT, SILVERY CORROSION-RESISTING COATINGS OF A TERNARY ALLOY COMPOSED OF FROM 50% TO 75% COPPER, 15% TO 30% TIN AND 5% TO 20% ZINC UPON A MEMBER WHICH COMPRISES MAKING THE MEMBER THE CATHODE IN AN AQUEOUS ELECTROLYTE COMPRISING ESSENTIALLY 0.5 TO 5 OZ. OF FREE CYANIDE PER GALLON, 0.2 TO 0.5 OZ. OF COPPER PER GALLON, 0.05 TO 0.2 OZ. OF TIN PER GALLON, 0.1 TO 0.5 OZ. OF ZINC PER GALLON ALKALI METAL HYDROXIDE AND 2 TO 12 OZ. OF ALKALI METAL CARBONATE PER GALLON, THE ELECTROLYTE BEING MAINTAINED AT A TEMPERATURE OF BETWEEN APROXIMATELY 140*F. AND 160*F. AND AT A PH OF FROM 12 TO 13.5 THE ANODE COMPRISING A TERNARY ALLOY COMPOSED OF FROM 50% TO 75F% COPPER, 15% TO 35% TIN AND 5% TO 20% ZINC AND PASSING ELECTRICAL CURRENT THROUGH THE ELECTROLYTE AT A POTENTIAL PROPORTIONAL TO THE DISTANCE BETWEEN THE ANODE AND THE CATHODE, THE POT;ENTIAL BEING FROM 3 TO 5 VOLTS BETWEEN THE ANODE AND CATHODE WHEN THEY ARE SPACED 6 TO 8 INCHES APART, AND THE VOLTAGE BEING INCREASED OR DECREASED ONE VOLT FOR EACH 4 INCHES INCREASE OR DECREASE, RESPECTIVELY, IN THE SPACING BETWEEN ANODE AND CATHODE.
Claim 2
Independent Claim
201 words
THE METHOD OF ELECTRODEPOSITING BRIGHT, SILVERY CORROSION-RESISTING COATINGS OF A TERNARY ALLOY COMPOSED OF FROM 50% TO 75% COPPER, 15% TO 30% TIN AND 5% TO 20% ZINC UPON A MEMBER WHICH COMPRISES MAKING THE MEMBER THE CATHODE IN AN AQUEOUS ELECTROLYTE COMPRISING ESSENTIALLY 0.5 TO 5 OZ. OF FREE CYANIDE PER GALLON, 0.2 TO 0.5 OZ. OF COPPER PER GALLON, 0.05 TO 0.2 OZ. OF TIN PER GALLON, 0.1 TO 0.5 OZ. OF ZINC PER GALLON ALKALI METAL HYDROXIDE AND 2 TO 12 OZ. OF ALKALI METAL CARBONATE PER GALLON, THE ELECTROLYTE BEING MAINTAINED AT A TEMPERATURE OF BETWEEN APROXIMATELY 140*F. AND 160*F. AND AT A PH OF FROM 12 TO 13.5 THE ANODE COMPRISING A TERNARY ALLOY COMPOSED OF FROM 50% TO 75F% COPPER, 15% TO 35% TIN AND 5% TO 20% ZINC AND PASSING ELECTRICAL CURRENT THROUGH THE ELECTROLYTE AT A POTENTIAL PROPORTIONAL TO THE DISTANCE BETWEEN THE ANODE AND THE CATHODE, THE POT;ENTIAL BEING FROM 3 TO 5 VOLTS BETWEEN THE ANODE AND CATHODE WHEN THEY ARE SPACED 6 TO 8 INCHES APART, AND THE VOLTAGE BEING INCREASED OR DECREASED ONE VOLT FOR EACH 4 INCHES INCREASE OR DECREASE, RESPECTIVELY, IN THE SPACING BETWEEN ANODE AND CATHODE.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |