Patent US1721694A successfully refreshed from Google Patents.
Patent US3355159A successfully refreshed from Google Patents.
US3355159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous heat treatment of sheet or strip material
Assignee: British Aluminum Co Ltd
•
Filing: 1963-05-22
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Granted: 1967-11-28
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Ayers Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
APPARATUS FOR HEAT TREATING STRIP MATERIAL COMPRISING TWO CHAMBERS FOR FLUIDISABLE MATERIAL, AN OUTLET SLOT FROM ONE CHAMBER AND AN INLET SLOT TO THE OTHER CHAMBER, BOTH SLOTS BEING DIMENSIONED AND ARRANGED TO PERMIT THE PASSAGE THERETHROUGH OF THE STRIP MATERIAL WITH ITS WIDER FACES CONTAINED IN SUBSTANTIALLY VERTICAL PLANES, MEANS FOR HEATING AND FLUIDISING THE FLUIDISABLE MATERIAL IN THE ONE CHAMBER AND MEANS FOR FLUIDISING AND COOLING THE FLUIDISABLE MATERIAL IN THE OTHER CHAMBER.
Claim 2
Dependent Claim
75 words
APPARATUS FOR HEAT TREATING STRIP MATERIAL COMPRISING TWO CHAMBERS FOR FLUIDISABLE MATERIAL, AN OUTLET SLOT FROM ONE CHAMBER AND AN INLET SLOT TO THE OTHER CHAMBER, BOTH SLOTS BEING DIMENSIONED AND ARRANGED TO PERMIT THE PASSAGE THERETHROUGH OF THE STRIP MATERIAL WITH ITS WIDER FACES CONTAINED IN SUBSTANTIALLY VERTICAL PLANES, MEANS FOR HEATING AND FLUIDISING THE FLUIDISABLE MATERIAL IN THE ONE CHAMBER AND MEANS FOR FLUIDISING AND COOLING THE FLUIDISABLE MATERIAL IN THE OTHER CHAMBER.
References Cited (Backward Citations)
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Cited
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |