US3392224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming plastic rods and profiles
Assignee: Phillips Petroleum Co
•
Filing: 1964-10-29
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Granted: 1968-07-09
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/475; B29C48/03; B29C48/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOD OF PRODUCING A CONTINUOUS ROD OF PRESELECTED PROFILE FROM GRANULAR MATERIAL CAPABLE OF BEING MADE INTO A LIQUID STATE BY THE APPLICATION OF HEAT AND PRESSURE AND HAVING THE PROPERTY OF SHRINKING WHEN CHANGING FROM A LIQUID STATE TO A FROZEN STATE, COMPRISING THE STEPS OF CONTINUOUSLY COMPACTING SUCH GRANULAR MATERIAL IN THE FORM OF SAID PROFILE BY THE APPLICATION OF MECHANICAL IMPULSE FORCES, HEATING SAID CONTINUOUSLY COMPACTED MATERIAL UNTIL THE SAME IS SUBSTANTIALLY MELTED, COOLING THE SUBSTANTIALLY MELTED MATERIAL IN CONFINES WHICH DEFINE THE FORM OF SAID PROFILE UNTIL THE SAME IS FROZEN, AND CONTINUING THE APPLICATION OF SAID MECHANICAL IMPULSE FORCES DURING THE FREEZING STEP SO THAT WHEN THE MATERIAL NORMALLY SHRINKS IT IS CAUSED TO REEXPAND IN A PERIODIC FASHION TO THE SHAPE OF SAID PROFILE.
Claim 2
Independent Claim
131 words
A METHOD OF PRODUCING A CONTINUOUS ROD OF PRESELECTED PROFILE FROM GRANULAR MATERIAL CAPABLE OF BEING MADE INTO A LIQUID STATE BY THE APPLICATION OF HEAT AND PRESSURE AND HAVING THE PROPERTY OF SHRINKING WHEN CHANGING FROM A LIQUID STATE TO A FROZEN STATE, COMPRISING THE STEPS OF CONTINUOUSLY COMPACTING SUCH GRANULAR MATERIAL IN THE FORM OF SAID PROFILE BY THE APPLICATION OF MECHANICAL IMPULSE FORCES, HEATING SAID CONTINUOUSLY COMPACTED MATERIAL UNTIL THE SAME IS SUBSTANTIALLY MELTED, COOLING THE SUBSTANTIALLY MELTED MATERIAL IN CONFINES WHICH DEFINE THE FORM OF SAID PROFILE UNTIL THE SAME IS FROZEN, AND CONTINUING THE APPLICATION OF SAID MECHANICAL IMPULSE FORCES DURING THE FREEZING STEP SO THAT WHEN THE MATERIAL NORMALLY SHRINKS IT IS CAUSED TO REEXPAND IN A PERIODIC FASHION TO THE SHAPE OF SAID PROFILE.
References Cited (Backward Citations)
US2372773A
Cited
US3239881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |