US3211571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for acid treating and coating metallic surfaces with plastic
Assignee: T-Fal Corp
•
Filing: 1962-04-17
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Granted: 1965-10-12
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Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Harris Benton Neal
- 👤 Jr William M Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; B05D5/086; B05D2202/00; B05D2202/20; B05D2202/25; B05D2350/00; B05D2350/30; B05D2350/33; B05D2350/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A CONTINUOUS METHOD O ACID TREATING AND COATING ONE SURFACE ONLY OF ALUMINUM BLANKS WITH PLASTIC MATERIAL, COMPRISING CONFINING THE BOUNDING EDGES OF INDIVIDUAL BLANKS IN SEALING ENGAGEMENT WITHINOPEN-TOP RETAINERS FOR MASKING THE UNDER-SURFACES OF RESPECTIVE BLANKS WHILE EXPOSING THE TOP SURFACES THEREOF, SEQUENTIALLY ADVANCING INDIVIDUAL RETAINERS AND BLANKS THROUGH AN ACID TREATING STATION WHERE A MIXTURE OF ACID AND WATER IN METERED QUANTITIES IS DIRECTED INTO SAID RETAINERS AND ONTO THE EXPOSED UPPER SURFACES OF RESPECTIVE BLANKS, RETAINING THE ACID-WATER MIXTURE IN SAID RETAINERS AND ON SAID SURFACES FOR A PREDETERMINED REATION PERIOD WHILE CONTINUING TO ADVANCE SAID RETAINERS AND BLANKS, REMOVING THE ACIDWATER MIXTURE FROM SAID SURFACES WHILE STILL CONFINED IN SAID RETAINERS, REMOVING THE BLANKS FROMSAID RETAINERS, WASHING AND DRYING SAID BLANKS, APPLYING A COATING OF LIQUID PLASTIC TO RESPECTIVE ACID TREATED SURFACES, AND HEAT TREATING SAID COATED BLANKS TO FUSE SAID PLASTIC COATINGS THEREON.
Claim 2
Dependent Claim
148 words
A CONTINUOUS METHOD O ACID TREATING AND COATING ONE SURFACE ONLY OF ALUMINUM BLANKS WITH PLASTIC MATERIAL, COMPRISING CONFINING THE BOUNDING EDGES OF INDIVIDUAL BLANKS IN SEALING ENGAGEMENT WITHINOPEN-TOP RETAINERS FOR MASKING THE UNDER-SURFACES OF RESPECTIVE BLANKS WHILE EXPOSING THE TOP SURFACES THEREOF, SEQUENTIALLY ADVANCING INDIVIDUAL RETAINERS AND BLANKS THROUGH AN ACID TREATING STATION WHERE A MIXTURE OF ACID AND WATER IN METERED QUANTITIES IS DIRECTED INTO SAID RETAINERS AND ONTO THE EXPOSED UPPER SURFACES OF RESPECTIVE BLANKS, RETAINING THE ACID-WATER MIXTURE IN SAID RETAINERS AND ON SAID SURFACES FOR A PREDETERMINED REATION PERIOD WHILE CONTINUING TO ADVANCE SAID RETAINERS AND BLANKS, REMOVING THE ACIDWATER MIXTURE FROM SAID SURFACES WHILE STILL CONFINED IN SAID RETAINERS, REMOVING THE BLANKS FROMSAID RETAINERS, WASHING AND DRYING SAID BLANKS, APPLYING A COATING OF LIQUID PLASTIC TO RESPECTIVE ACID TREATED SURFACES, AND HEAT TREATING SAID COATED BLANKS TO FUSE SAID PLASTIC COATINGS THEREON.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |