Patent US2735138A successfully refreshed from Google Patents.
US2735138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water cooled vacuum and pressure mold
Assignee: —
•
Filing: —
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Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/10; B29C39/00; B29C39/02; B29C39/10; B29C67/00; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/0836; B29K2105/0845; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A MOLD, COMPRISING AN OUTER TUBE, A CLOSURE AT ONE END OF SAID TUBE, A VALVED PORT IN SAID CLOSURE, A REMOVABLE CYLINDRICAL MANDREL IN SAID TUBE, AN EXTERIOR DIAMETER OF SAID MANDREL BEING SUBSTANTIALLY LESS THAN THE INTERIOR DIAMETER OF SAID TUBE, A PLATE AT EACH END OF SAID MANDREL, ONE OF SAID PLATES BEING POSITIONED IN SAID TUBE CLOSELY ADJACENT SAID CLOSURE, THE OTHER OF SAID PLATES BEING POSITIONED ADJACENT THE OPPOSITE END OF SAID TUBE, THE EDGES OF SAID PLATES BEING ADJACENT THE INNER SURFACE OF SAID TUBE, A PLURALITY OF PORTS IN SAID PLATES BETWEEN THE EDGES OF SAID PLATES AND THE EXTERIOR SURFACE OF SAID MANDREL, SAID PORTS COMMUNICATING WITH THE ANNULUS BETWEEN THE EXTERIOR SURFACE OF SAID MANDREL AND THE INTERIOR SURFACE OF SAID TUBE, MEANS FOR INTRODUCING MOLTEN MATERIAL INTO THE ENDS OF SAID TUBE, AND MEANS FOR WITHDRAWING AIR FROM SAID PORTS THE PORTS IN SAID ONE PLATE BEING SUFFICIENTLY SMALL TO PERMIT CONGEALING OF SAID MOLTEN MATERIAL IN SAID LAST NAMED PORTS AND TO SUBSTANTIALLY PREVENT INTRODUCTION OF SAID MATERIAL BETWEEN SAID ONE PLATE AND SAID CLOSURE.
Claim 2
Dependent Claim
186 words
A MOLD, COMPRISING AN OUTER TUBE, A CLOSURE AT ONE END OF SAID TUBE, A VALVED PORT IN SAID CLOSURE, A REMOVABLE CYLINDRICAL MANDREL IN SAID TUBE, AN EXTERIOR DIAMETER OF SAID MANDREL BEING SUBSTANTIALLY LESS THAN THE INTERIOR DIAMETER OF SAID TUBE, A PLATE AT EACH END OF SAID MANDREL, ONE OF SAID PLATES BEING POSITIONED IN SAID TUBE CLOSELY ADJACENT SAID CLOSURE, THE OTHER OF SAID PLATES BEING POSITIONED ADJACENT THE OPPOSITE END OF SAID TUBE, THE EDGES OF SAID PLATES BEING ADJACENT THE INNER SURFACE OF SAID TUBE, A PLURALITY OF PORTS IN SAID PLATES BETWEEN THE EDGES OF SAID PLATES AND THE EXTERIOR SURFACE OF SAID MANDREL, SAID PORTS COMMUNICATING WITH THE ANNULUS BETWEEN THE EXTERIOR SURFACE OF SAID MANDREL AND THE INTERIOR SURFACE OF SAID TUBE, MEANS FOR INTRODUCING MOLTEN MATERIAL INTO THE ENDS OF SAID TUBE, AND MEANS FOR WITHDRAWING AIR FROM SAID PORTS THE PORTS IN SAID ONE PLATE BEING SUFFICIENTLY SMALL TO PERMIT CONGEALING OF SAID MOLTEN MATERIAL IN SAID LAST NAMED PORTS AND TO SUBSTANTIALLY PREVENT INTRODUCTION OF SAID MATERIAL BETWEEN SAID ONE PLATE AND SAID CLOSURE.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |