Patent US5488728A successfully refreshed from Google Patents.
Patent US4852918A successfully refreshed from Google Patents.
Patent US4285296A successfully refreshed from Google Patents.
Patent US3122828A successfully refreshed from Google Patents.
US3122828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of heat-sensitive alloys with aid of a thermal barrier
Assignee: Special Metals Inc
•
Filing: 1963-01-14
•
Granted: 1964-03-03
•
Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Charles J Havel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:27
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/008; B; B21; B21B; B21B1/00; B21B1/02; B21B3/00; B21B3/02; B21C; B21C1/00; B21C1/16; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/32; C21; C21D; C21D7/00; C21D7/13; B21B1/38; B21B47/00; B21B47/04; Y; Y10; Y10S; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN THE PROCESS OF CONVERTING AN INGOT OF HEAT-SENSITIVE ALLOY COMPOSITION INVOLVING ROLLING THE INGOT WHILE AT A TEMPERATURE ABOVE THE CRITICAL TEMPERATURE OF THE ALLOY, THE IMPROVEMENT WHICH CONSISTS IN ENVELOPING THE INGOT IN A METAL SHELL HAVING SUCH WALL THICKNESS AS MATERIALLY TO RETARD THE SETTING UP OF A SHARP TEMPERATURE DIFFERENTIAL BETWEEN SURFACE AND INTERIOR OF THE INGOT, HOT-EXTENDING OR DRAWING THE SO-ENVELOPED INGOT THROUGH AN EXTRUSION OF DRAWING DIE HAVING SUCH A SIZE OF OPENING AS TO COMPRESS SAID SHELL ONTO SAID INGOT AND MATERIALLY TO REDUCE THE CROSS-SECTIONAL AREA OF THE ENVELOPED INGOT; THEREAFTER HOT-ROLLING THE EXTRUDED OR DRAWN ARTICLE TO APPROXIMATELY FINAL CROSS-SECTIONAL SIZE WITHOUT IN-PROCESS CONDITIONING; AND REMOVING THE SHELL FROM THE RESULTING REDUCED BILLET.
Claim 2
Dependent Claim
122 words
IN THE PROCESS OF CONVERTING AN INGOT OF HEAT-SENSITIVE ALLOY COMPOSITION INVOLVING ROLLING THE INGOT WHILE AT A TEMPERATURE ABOVE THE CRITICAL TEMPERATURE OF THE ALLOY, THE IMPROVEMENT WHICH CONSISTS IN ENVELOPING THE INGOT IN A METAL SHELL HAVING SUCH WALL THICKNESS AS MATERIALLY TO RETARD THE SETTING UP OF A SHARP TEMPERATURE DIFFERENTIAL BETWEEN SURFACE AND INTERIOR OF THE INGOT, HOT-EXTENDING OR DRAWING THE SO-ENVELOPED INGOT THROUGH AN EXTRUSION OF DRAWING DIE HAVING SUCH A SIZE OF OPENING AS TO COMPRESS SAID SHELL ONTO SAID INGOT AND MATERIALLY TO REDUCE THE CROSS-SECTIONAL AREA OF THE ENVELOPED INGOT; THEREAFTER HOT-ROLLING THE EXTRUDED OR DRAWN ARTICLE TO APPROXIMATELY FINAL CROSS-SECTIONAL SIZE WITHOUT IN-PROCESS CONDITIONING; AND REMOVING THE SHELL FROM THE RESULTING REDUCED BILLET.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |