Patent US3328994A successfully refreshed from Google Patents.
US3328994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for extruding heat-conductive materials
Assignee: Individual
•
Filing: 1965-03-17
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Granted: 1967-07-04
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Lindemann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:29
CPC Classifications
B; B21; B21C; B21C29/00; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/21; B22; B22D; B22D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF EXTRUDING MATERIALS HAVING A HIGH HEAT CONDUCTIVITY COMPRISING THE STEPS OF FILLING A CHAMBER OF A RELATIVELY SMALL CAPACITY WITH THE MATERIAL IN A LIQUID CONDITION, EXERTING A PRESSURE UPON SAID LIQUID MATERIAL WITHIN SAID CHAMBERS SO AS TO EXTRUDE THE MATERIAL THROUGH AN EXTRUSION NOZZLE AT ONE END OF SAID CHAMBER, COOLING THE MATERIAL DIRECTLY AT LEAST IMMEDIATELY WHEN EMERGING FROM SAID NOZZLE SO THAT THE PARTS OF THE MATERIAL LOCATED WITHIN SAID NOZZLE AND ALSO WITHIN SAID CHAMBER AT THE INLET PART OF SAID NOZZLE AT A SHORT DISTANCE FROM THE MOST CONSTRICTED PART OF SAID NOZZLE WILL BE COOLED TO A SOLID BUT MALLEABLE CONDITION BEFORE BEING COMPRESSED AND FORCED THROUGH THE NOZZLE, AND FURTHER SUPPLYING INTO SAID CHAMBER ONLY SUCH AN AMOUNT OF LIQUID MATERIAL THAT SAID PARTS OF SAID MATERIAL WITHIN SAID INLET PART OF SAID NOZZLE WIL BE CONTINUOUSLY COOLED TO SAID SOLID CONDITION.
Claim 2
Independent Claim
153 words
A METHOD OF EXTRUDING MATERIALS HAVING A HIGH HEAT CONDUCTIVITY COMPRISING THE STEPS OF FILLING A CHAMBER OF A RELATIVELY SMALL CAPACITY WITH THE MATERIAL IN A LIQUID CONDITION, EXERTING A PRESSURE UPON SAID LIQUID MATERIAL WITHIN SAID CHAMBERS SO AS TO EXTRUDE THE MATERIAL THROUGH AN EXTRUSION NOZZLE AT ONE END OF SAID CHAMBER, COOLING THE MATERIAL DIRECTLY AT LEAST IMMEDIATELY WHEN EMERGING FROM SAID NOZZLE SO THAT THE PARTS OF THE MATERIAL LOCATED WITHIN SAID NOZZLE AND ALSO WITHIN SAID CHAMBER AT THE INLET PART OF SAID NOZZLE AT A SHORT DISTANCE FROM THE MOST CONSTRICTED PART OF SAID NOZZLE WILL BE COOLED TO A SOLID BUT MALLEABLE CONDITION BEFORE BEING COMPRESSED AND FORCED THROUGH THE NOZZLE, AND FURTHER SUPPLYING INTO SAID CHAMBER ONLY SUCH AN AMOUNT OF LIQUID MATERIAL THAT SAID PARTS OF SAID MATERIAL WITHIN SAID INLET PART OF SAID NOZZLE WIL BE CONTINUOUSLY COOLED TO SAID SOLID CONDITION.
References Cited (Backward Citations)
US1587933A
Cited
US1924294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |