US2755545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1952-07-10
•
Granted: 1956-07-24
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:12
CPC Classifications
B; B21; B21J; B21J1/00; B21J1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD OF PREPARING ELONGATED FORGING STOCK OF RELATIVELY MASSIVE CROSS-SECTION FROM AN ELONGATED AS-CAST BLANK OF ALUMINUM OR ALUMINUM ALLOY, COMPRISING THE STEPS OF HEATING SAID BLANK TO A TEMPERATURE OF FROM ABOUT 800* TO 950* F., CONFINING THE HEATED BLANK IN AN ELONGATED CHAMBER HAVING A LARGER CROSS-SECTION THAN THAT OF SAID BLANK, SUBJECTING THE BLANK TO AXIAL PRESSURE SUFFICIENT TO UPSET THE ENTIRE BLANK OUTWARDLY INTO CLOSE CONFORMITY WITH SAID CHAMBER AND TO INCREASE THE CROSSSECTIONAL WIDTH OF THE BLANK BY A FACTOR OF ABOUT 1.3, AND THEREAFTER REPEATING SUCH CYCLE OF OPERATIONS OF HEATING AND UPSETTING AT LEAST ONE MORE TIME TO FURTHER INCREASE THE CROSS-SECTION OF THE BLANK, WHEREBY SAID AS-CAST BLANK IS TRANSFORMED INTO SOUND, WORKED METAL STOCK HAVING A CROSS-SECTIONAL SIZE SUBSTANTIALLY GREATER THAN THAT OF THE ORIGINAL AS-CAST BLANK AND POSESSING A SUBSTANTIAL INCREASE IN PHYSICAL PROPERTIES AND WHEREIN SAID PROPERTIES ARE SUBSTANTIALLY UNIFORM THROUGHOUT THE CROSS-SECTIONAL AREA OF THE STOCK.
Claim 2
Independent Claim
159 words
A METHOD OF PREPARING ELONGATED FORGING STOCK OF RELATIVELY MASSIVE CROSS-SECTION FROM AN ELONGATED AS-CAST BLANK OF ALUMINUM OR ALUMINUM ALLOY, COMPRISING THE STEPS OF HEATING SAID BLANK TO A TEMPERATURE OF FROM ABOUT 800* TO 950* F., CONFINING THE HEATED BLANK IN AN ELONGATED CHAMBER HAVING A LARGER CROSS-SECTION THAN THAT OF SAID BLANK, SUBJECTING THE BLANK TO AXIAL PRESSURE SUFFICIENT TO UPSET THE ENTIRE BLANK OUTWARDLY INTO CLOSE CONFORMITY WITH SAID CHAMBER AND TO INCREASE THE CROSSSECTIONAL WIDTH OF THE BLANK BY A FACTOR OF ABOUT 1.3, AND THEREAFTER REPEATING SUCH CYCLE OF OPERATIONS OF HEATING AND UPSETTING AT LEAST ONE MORE TIME TO FURTHER INCREASE THE CROSS-SECTION OF THE BLANK, WHEREBY SAID AS-CAST BLANK IS TRANSFORMED INTO SOUND, WORKED METAL STOCK HAVING A CROSS-SECTIONAL SIZE SUBSTANTIALLY GREATER THAN THAT OF THE ORIGINAL AS-CAST BLANK AND POSESSING A SUBSTANTIAL INCREASE IN PHYSICAL PROPERTIES AND WHEREIN SAID PROPERTIES ARE SUBSTANTIALLY UNIFORM THROUGHOUT THE CROSS-SECTIONAL AREA OF THE STOCK.
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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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |