US2860092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electropickling process
Assignee: Primerica Inc
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Filing: 1957-12-31
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Granted: 1958-11-11
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Hart
- 👤 Gilbert G Kamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:22
CPC Classifications
C; C25; C25F; C25F1/00; C25F1/02; C25F1/04; C25F1/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
A METHOD OF HIGH SPEED CLEANING AND DEOXIDIZING THE MARGINAL EDGE PORTION OF A FERROUS CAN BODY BLANK, COMPRISING PASSING SAID PORTION BETWEEN INDUCTION HEATING COILS HAVING AN INDUCTION FREQUENCY OF FROM 100 TO 500 KILOCYCLES, HEATING SAID PORTION TO A TEMPERATURE OF ABOUT 525*F. IN ABOUT 0.4 SECOND BY MEANS OF SAID COILS, IMMERSING THE THUS HEATED PORTION IN AN AQUEOUS HCI SOLUTION FOR ABOUT 3 SECONDS, SAID SOLUTION CONTAINING ABOUT 18% BY WEIGHT HCI AND BEING MAINTAINED AT A TEMPERATURE OF ABOUT 120*F., MAKING SAID CAN BODY BLANK ONE ELECTRODE IN AN ELECTROCHEMICAL CIRCUIT, AND PASSING AN ALTERNATING CURRENT HAVING A CURRENT DENSITY OF ABOUT 1500 AMPERES PER SQUARE FOOT THROUGH SAID SOLUTION WHEREBY SAID PORTION IS CLEANED AND DEOXIDIZED BY AN ELECTROPICKLING ACTION.
References Cited (Backward Citations)
US532394A
Cited
US1885602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |