US2513713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of carburizing low carbon strip steel
Assignee: Electric Furnace Co
•
Filing: 1947-11-24
•
Granted: 1950-07-04
•
Expires: 1967-11-24
Abstract
No abstract record available.
Inventors
- 👤 Frank T Cope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:51
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF CONTINUOUSLY UNIFORMLY CARBURIZING STRIP STEEL INCLUDING THE STEPS OF PASSING LIGHT GUAGE COLD ROLLED LOW CARBON STRIP STEEL CONTINUOUSLY THROUGH A SEALED CHAMBER CONTAINING CARBURIZING GAS, ELECTRIC RESISTANCE HEATING THE STRIP INTERNALLY TO CARBURIZING TEMPERATURE AS IT PASSES THROUGH SAID CHAMBER, APPLYING HEAT TO THE STRIP EDGES FROM A SOURCE EXTERNAL OF THE STRIP IN A GREATER DEGREE THAN TO THE CENTER ZONE THEREOF TO BALANCE THE HIGHER RADIATION LOSS OF INTERNAL HEAT FROM THE STRIP AT THE STRIP EDGES THAN FROM THE CENTER ZONE THEREOF THEREBY PRE-
Claim 2
Independent Claim
91 words
THE METHOD OF CONTINUOUSLY UNIFORMLY CARBURIZING STRIP STEEL INCLUDING THE STEPS OF PASSING LIGHT GUAGE COLD ROLLED LOW CARBON STRIP STEEL CONTINUOUSLY THROUGH A SEALED CHAMBER CONTAINING CARBURIZING GAS, ELECTRIC RESISTANCE HEATING THE STRIP INTERNALLY TO CARBURIZING TEMPERATURE AS IT PASSES THROUGH SAID CHAMBER, APPLYING HEAT TO THE STRIP EDGES FROM A SOURCE EXTERNAL OF THE STRIP IN A GREATER DEGREE THAN TO THE CENTER ZONE THEREOF TO BALANCE THE HIGHER RADIATION LOSS OF INTERNAL HEAT FROM THE STRIP AT THE STRIP EDGES THAN FROM THE CENTER ZONE THEREOF THEREBY PRE-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |