Patent US2953473A successfully refreshed from Google Patents.
US2953473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means of coating objects with aluminum
Assignee: AMERICAN MOLLERZING Corp
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Filing: 1956-12-03
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Granted: 1960-09-20
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Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 David W Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:45
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12; C23C2/34; C23C2/36; C23C2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A PROCESS FOR CONTINUOUSLY COATING BASE METALS WITH A MOLTEN COATING METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, WHEREIN SAID MOLTEN COATING METAL OVERLIES AT LEAST A PORTION OF A HEAVIER MOLTEN SALT BATH, WHICH COMPRISES THE STEPS OF: PASSING SAID BASE METAL THROUGH A FIRST ZONE ONLY OF SAID MOLTEN SALT BATH, THE FIRST ZONE BEING MAINTAINED AT A HIGHER TEMPERATURE THAN A ZONE OF SAID SALT BATH SECTION, CAUSING CIRCULATION OF SALT FROM THE FIRST HOTTER ZONE DOWNWARDLY TO THE LOWER COLDER ZONE AND THENCE UPWARDLY TO CREATE A FLOW PATTERN IN THE SAID BATH, WITHDRAWING SAID BASE METAL THROUGH SAID MOLTEN COATING METAL WHICH OVERLIES AT LEAST A PORTION OF THE SURFACE OF SAID SALT BATH TO BE THEREBY COATED, THOSE OXIDES AND IMPURITIES PRESENT IN AN AMOUNT ABOVE THE SATURATION POINT OF THE LOWER ZONE BEING PRECIPITATED WITHIN SAID LOWER ZONE OF THE SALT BATH REMOTE FROM THE PATH OF SAID BASE METAL.
Claim 2
Dependent Claim
161 words
A PROCESS FOR CONTINUOUSLY COATING BASE METALS WITH A MOLTEN COATING METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, WHEREIN SAID MOLTEN COATING METAL OVERLIES AT LEAST A PORTION OF A HEAVIER MOLTEN SALT BATH, WHICH COMPRISES THE STEPS OF: PASSING SAID BASE METAL THROUGH A FIRST ZONE ONLY OF SAID MOLTEN SALT BATH, THE FIRST ZONE BEING MAINTAINED AT A HIGHER TEMPERATURE THAN A ZONE OF SAID SALT BATH SECTION, CAUSING CIRCULATION OF SALT FROM THE FIRST HOTTER ZONE DOWNWARDLY TO THE LOWER COLDER ZONE AND THENCE UPWARDLY TO CREATE A FLOW PATTERN IN THE SAID BATH, WITHDRAWING SAID BASE METAL THROUGH SAID MOLTEN COATING METAL WHICH OVERLIES AT LEAST A PORTION OF THE SURFACE OF SAID SALT BATH TO BE THEREBY COATED, THOSE OXIDES AND IMPURITIES PRESENT IN AN AMOUNT ABOVE THE SATURATION POINT OF THE LOWER ZONE BEING PRECIPITATED WITHIN SAID LOWER ZONE OF THE SALT BATH REMOTE FROM THE PATH OF SAID BASE METAL.
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |