US2755546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal treatment
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1952-07-10
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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
2026-11-09 20:25
CPC Classifications
B; B21; B21J; B21J1/00; B21J1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A METHOD OF PREPARING ELONGATED FORGING STOCK OF RELATIVELY MASSIVE CORSS-SECTION FROM AN ELONGATED ASCAST METAL BLANK, COMPRISING THE STEPS OF HEATING THE BLANK, CONFINING SAID HEATED BLANK IN AN ELONGATED CHAMBER WHICH CLOSELY SURROUNDS AND SUPPORTS SAID BLANK, SUBJECTING ONE END OF SAID BLANK TO AXIAL PRESSURE TO CAUSE THE OPPOSITE END THEREOF TO ENTER AN ADJOINING SECOND CHAMBER OF SUBSTANTIALLY LARGER CROSS-SECTION THAN THAT OF SAID BLANK AND WHEREIN SAID OPPOSITE END OF SAID BLANK ABUTS AGAINST A SURFACE OF SAID SECOND CHAMBER, THE PORTION OF THE BLANK PROJECTING INTO SAID SECOND CHAMBER AND BEING UNSUPPORTED CIRCUMFERENTIALLY NOT EXCEEDING AN AXIAL LENGTH EQUAL TO 3 TIMES THE GREATEST TRANSVERSE DIMENSION OF SAID BLANK, AND CONTINUING SAID AXIAL PRESSURE APPLICATION TO PROGRESSIVELY UPSET THE ENTIRE BLANK INTO CLOSE CONFORMITY WITH SAID SECOND CHAMBER, WHEREBY SAID AS-CAST BLANK IS TRANSFORMED INTO SOUND, WORKED METAL STOCK POSSESSING HIGH PHYSICAL PROPERTIES AND WHEREIN SUCH WORKED STOCK POSSESSES A CROSS-SECTIONAL SIZE SUBSTANTIALLY GREATER THAN THAT OF THE ORIGINAL AS-CAST BLANK.
Claim 2
Independent Claim
167 words
A METHOD OF PREPARING ELONGATED FORGING STOCK OF RELATIVELY MASSIVE CORSS-SECTION FROM AN ELONGATED ASCAST METAL BLANK, COMPRISING THE STEPS OF HEATING THE BLANK, CONFINING SAID HEATED BLANK IN AN ELONGATED CHAMBER WHICH CLOSELY SURROUNDS AND SUPPORTS SAID BLANK, SUBJECTING ONE END OF SAID BLANK TO AXIAL PRESSURE TO CAUSE THE OPPOSITE END THEREOF TO ENTER AN ADJOINING SECOND CHAMBER OF SUBSTANTIALLY LARGER CROSS-SECTION THAN THAT OF SAID BLANK AND WHEREIN SAID OPPOSITE END OF SAID BLANK ABUTS AGAINST A SURFACE OF SAID SECOND CHAMBER, THE PORTION OF THE BLANK PROJECTING INTO SAID SECOND CHAMBER AND BEING UNSUPPORTED CIRCUMFERENTIALLY NOT EXCEEDING AN AXIAL LENGTH EQUAL TO 3 TIMES THE GREATEST TRANSVERSE DIMENSION OF SAID BLANK, AND CONTINUING SAID AXIAL PRESSURE APPLICATION TO PROGRESSIVELY UPSET THE ENTIRE BLANK INTO CLOSE CONFORMITY WITH SAID SECOND CHAMBER, WHEREBY SAID AS-CAST BLANK IS TRANSFORMED INTO SOUND, WORKED METAL STOCK POSSESSING HIGH PHYSICAL PROPERTIES AND WHEREIN SUCH WORKED STOCK POSSESSES A CROSS-SECTIONAL SIZE SUBSTANTIALLY GREATER THAN THAT OF THE ORIGINAL AS-CAST BLANK.
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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 |