US2805143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heating metal
Assignee: Individual
•
Filing: 1954-09-22
•
Granted: 1957-09-03
•
Expires: 1974-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Caleb Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
C; C21; C21D; C21D9/00; C21C; C21C5/00; C21C5/56; C21C5/562; C21C5/565; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S266/00; Y10S266/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THAT METHOD OF HEATING METAL COMPRISING THE STEPS OF DISPOSING A CHARGE OF THE METAL IN A VERTICAL CONTAINER, PASSING HOT COMBUSTION GASES INTO THE TOP OF THE CONTAINER, AND VERTICALLY DOWNWARDLY THROUGH SAID CHARGE TO HEAT THE CHARGE PROGRESSIVELY AND IN SUBSTANTIALLY HORIZONTAL PLANES, WITHDRAWING COOLED COMBUSTION GASES ADJACENT THE BOTTOM OF THE CONTAINER, AND CONTROLLING THE TEMPERATURE OF THE METAL IN THE UPPER PORTION OF THE CHARGE BY RECIRCULATING TO THE TOP OF THE CONTAINER A PORTION OF THE COOLED COMBUSTION GASES FROM THE BOTTOM OF THE CONTAINER.
Claim 2
Dependent Claim
90 words
THAT METHOD OF HEATING METAL COMPRISING THE STEPS OF DISPOSING A CHARGE OF THE METAL IN A VERTICAL CONTAINER, PASSING HOT COMBUSTION GASES INTO THE TOP OF THE CONTAINER, AND VERTICALLY DOWNWARDLY THROUGH SAID CHARGE TO HEAT THE CHARGE PROGRESSIVELY AND IN SUBSTANTIALLY HORIZONTAL PLANES, WITHDRAWING COOLED COMBUSTION GASES ADJACENT THE BOTTOM OF THE CONTAINER, AND CONTROLLING THE TEMPERATURE OF THE METAL IN THE UPPER PORTION OF THE CHARGE BY RECIRCULATING TO THE TOP OF THE CONTAINER A PORTION OF THE COOLED COMBUSTION GASES FROM THE BOTTOM OF THE CONTAINER.
References Cited (Backward Citations)
US2029580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |