US2753995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of metals
Assignee: Balfour Beatty PLC
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Filing: 1951-11-13
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Granted: 1956-07-10
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Expires: 1971-11-13
Abstract
No abstract record available.
Inventors
- 👤 Tennant John Alan
- 👤 Lauder Joseph Gordon
- 👤 Naisbitt Reginald Jame Barnard
- 👤 Woolley Henry Charles
- 👤 Lawrenson Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:35
CPC Classifications
B; B21; B21C; B21C27/00; B21C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A BILLET PRESS FOR EXTRUDING METAL FROM A SUCCESSION OF BILLETS COMPRISING AT LEAST ONE CYLINDER OPEN AT ONE END TO RECEIVE A RAM AND LEADING AT ITS OTHER END TO AN EXTRUSION ORIFICE, A RAM, MEANS FOR FORCING SAID RAM INTO SAID CYLINDER, A STRAIGHT PASSAGE EXTENDING THROUGH THE WALL OF SAID CYLINDER OPENING INTO SAID CYLINDER THROUGH AN ORIFICE OF SMALL DIAMETER NEAR THE REGION OCCUPIED BY THE END OF A NEW BILLET ADJACENT THE RAM HEAD WHEN THE NEW BILLET IS IN POSITION IN CONTACT WITH THE RESIDUE OF THE OLD CHARGE, AND ADAPTED TO RECEIVE MEANS FOR CLEARING THE PASSAGE, AND MEANS CONNECTED TO SAID PASSAGE FOR PRODUCING A VACUUM.
Claim 2
Dependent Claim
114 words
A BILLET PRESS FOR EXTRUDING METAL FROM A SUCCESSION OF BILLETS COMPRISING AT LEAST ONE CYLINDER OPEN AT ONE END TO RECEIVE A RAM AND LEADING AT ITS OTHER END TO AN EXTRUSION ORIFICE, A RAM, MEANS FOR FORCING SAID RAM INTO SAID CYLINDER, A STRAIGHT PASSAGE EXTENDING THROUGH THE WALL OF SAID CYLINDER OPENING INTO SAID CYLINDER THROUGH AN ORIFICE OF SMALL DIAMETER NEAR THE REGION OCCUPIED BY THE END OF A NEW BILLET ADJACENT THE RAM HEAD WHEN THE NEW BILLET IS IN POSITION IN CONTACT WITH THE RESIDUE OF THE OLD CHARGE, AND ADAPTED TO RECEIVE MEANS FOR CLEARING THE PASSAGE, AND MEANS CONNECTED TO SAID PASSAGE FOR PRODUCING A VACUUM.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |