Patent US3133492A successfully refreshed from Google Patents.
US3133492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1963-05-13
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Granted: 1964-05-19
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Czulak Joseph
- 👤 Freeman Norman Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
A; A01; A01J; A01J25/00; A01J25/12; A01J25/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PRESS COMPRISING AN INNER SHELL HAVING WALLS DEFINING AN INNER PRESS CHAMBER OF RECTILINEAR TRANSVERSE CROSS-SECTION AND AN OUTER SHELL OF CURVILINEAR TRANSVERSE CROSS-SECTION DISPOSED ABOUT THE INNER SHELL TO PROVIDE A SPACE BETWEEN SAID INNER SHELL AND SAID OUTER SHELL, A PISTON HAVING A PRESSING SURFACE AND A REAR SURFACE SLIDABLE WITHIN THE PRESS CHAMBER, MEANS TO APPLY FLUID UNDER PRESSURE TO THE REAR SURFACE OF THE PISTON TO CAUSE THE PISTON TO ADVANCE INTO THE PRESS CHAMBER AND TO APPLY THE PRESSURE OF SAID FLUID ALSO INTERNALLY TO THE WALLS OF THE PRESS CHAMBER TO THE REAR OF THE PISTON, AND MEANS TO APPLY FLUID UNDER PRESSURE TO THE SPACE BETWEEN THE INNER PRESS CHAMBER AND THE OUTER SHELL.
Claim 2
Dependent Claim
122 words
A PRESS COMPRISING AN INNER SHELL HAVING WALLS DEFINING AN INNER PRESS CHAMBER OF RECTILINEAR TRANSVERSE CROSS-SECTION AND AN OUTER SHELL OF CURVILINEAR TRANSVERSE CROSS-SECTION DISPOSED ABOUT THE INNER SHELL TO PROVIDE A SPACE BETWEEN SAID INNER SHELL AND SAID OUTER SHELL, A PISTON HAVING A PRESSING SURFACE AND A REAR SURFACE SLIDABLE WITHIN THE PRESS CHAMBER, MEANS TO APPLY FLUID UNDER PRESSURE TO THE REAR SURFACE OF THE PISTON TO CAUSE THE PISTON TO ADVANCE INTO THE PRESS CHAMBER AND TO APPLY THE PRESSURE OF SAID FLUID ALSO INTERNALLY TO THE WALLS OF THE PRESS CHAMBER TO THE REAR OF THE PISTON, AND MEANS TO APPLY FLUID UNDER PRESSURE TO THE SPACE BETWEEN THE INNER PRESS CHAMBER AND THE OUTER SHELL.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |