US3296039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing the formation of black stripes in the heat-treatment of metal bodies
Assignee: Huettenwerk Oberhausen AG
•
Filing: 1965-12-22
•
Granted: 1967-01-03
•
Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Loeck Karl
- 👤 Molz Josef
- 👤 Weineck Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/22; F27D; F27D3/00; F27D3/02; F27D3/022; F27D3/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE HEAT TREATMENT OF METAL BODIES WHICH ARE SUCCESSIVELY FED THROUGH A PUSHER-TYPE HEAT-TREATING OVEN FROM AN INLET OF SAID OVEN TO AN OUTLET THEREOF BY SLIDING SAID BODIES ALONG FLUID-COOLED RAILS HAVING LATERALLY INSULATED HEAT-CONDUCTING REFRACTORY MEMBERS INTERPOSED BETWEEN SAID BODIES AND SAID RAILS, THE BODIES BEING THEREUPON WITHDRAWN FROM SAID OVEN, THE IMPROVEMENT WHICH COMPRISES THE STEP OF DIRECTING A STREAM OF HEATIN GAS AGAINST SAID BODIES FROM ABOVE AND BELOW DURING THE
Claim 2
Dependent Claim
76 words
IN THE HEAT TREATMENT OF METAL BODIES WHICH ARE SUCCESSIVELY FED THROUGH A PUSHER-TYPE HEAT-TREATING OVEN FROM AN INLET OF SAID OVEN TO AN OUTLET THEREOF BY SLIDING SAID BODIES ALONG FLUID-COOLED RAILS HAVING LATERALLY INSULATED HEAT-CONDUCTING REFRACTORY MEMBERS INTERPOSED BETWEEN SAID BODIES AND SAID RAILS, THE BODIES BEING THEREUPON WITHDRAWN FROM SAID OVEN, THE IMPROVEMENT WHICH COMPRISES THE STEP OF DIRECTING A STREAM OF HEATIN GAS AGAINST SAID BODIES FROM ABOVE AND BELOW DURING THE
References Cited (Backward Citations)
US1338003A
Cited
DE1094778B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |