US3565662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip coating method and apparatus
Assignee: Bethlehem Steel Corp
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Filing: 1969-05-21
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Granted: 1971-02-23
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Expires: 1989-05-21
Abstract
Abstract IN A METHOD OF COATING METAL STRIP WITH POWDER, AIR IS INTRODUCED INTO A PLENUM CHAMBER AND FORCED THROUGH A SUPERIMPOSED DIFFUSING PLATE TO FLUIDIZE POWDER IN A CHAMBER ABOVE SAID PLENUM CHAMBER AND PLATE. BRUSHES, LOCATED IN THE FLUIDIZING CHAMBER, DISPLACE PART OF THE FLUIDIZED POWDER TO A COATING ZONE DIRECTLY ABOVE THE FLUIDIZING CHAMBER. STRIP PASSES THROUGH THE COATING ZONE WHEREIN THE UNDERSIDE OF THE STRIP IS COATED.
Inventors
- 👤 George W Ward
- 👤 Herbert Wald
- 👤 William O Blanch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/22; B05D1/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |