Patent US3127458A successfully refreshed from Google Patents.
US3127458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding
Assignee: Phillips Petroleum Co
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Filing: 1961-04-11
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Granted: 1964-03-31
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Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John N Scott
- 👤 Donald L Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:31
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/66; B29C35/00; B29C35/16; B29C2035/1658; B29C49/6604; B29C2049/6606; B29C2049/6607; B29C2049/6615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR THE MANUFACTURE OF BLOWN HOLLOW ARTICLES FROM ORGANIC PLASTIC MATERIALS WHICH ARE EXPANDIBLE BY BLOWING AND THEREAFTER ARE CAPABLE OF BEING REGIDIFIED WHICH COMPRISES EXTRUDING A PORTION OF PLASTIC MATERIAL, BLOWING THE EXTRUDED PORTION OF PLASTIC MATERIAL INTO CONFORMITY WITH THE CONFINES OF AN ENCLOSING MOLD, COOLING SAID PLASTIC MATERIAL BY FIRST INTRODUCING SUBSTANTIALLY DRY AIR UNDER PRESSURE, CIRCULATING UNDER PRESSURE THE AIR WITHIN SAID BLOWN HOLLOW ARTICLE, AND THEREAFTER INTRODUCING INTO SAID CIRCULATING AIR UNDER PRESSURE A SMALL AMOUNT OF AN ATOMIZED LIQUID COOLANT TO ACHIEVE CIRCULATION OF SAID LIQUID COOLANT WITH SAID AIR.
Claim 2
Dependent Claim
98 words
A PROCESS FOR THE MANUFACTURE OF BLOWN HOLLOW ARTICLES FROM ORGANIC PLASTIC MATERIALS WHICH ARE EXPANDIBLE BY BLOWING AND THEREAFTER ARE CAPABLE OF BEING REGIDIFIED WHICH COMPRISES EXTRUDING A PORTION OF PLASTIC MATERIAL, BLOWING THE EXTRUDED PORTION OF PLASTIC MATERIAL INTO CONFORMITY WITH THE CONFINES OF AN ENCLOSING MOLD, COOLING SAID PLASTIC MATERIAL BY FIRST INTRODUCING SUBSTANTIALLY DRY AIR UNDER PRESSURE, CIRCULATING UNDER PRESSURE THE AIR WITHIN SAID BLOWN HOLLOW ARTICLE, AND THEREAFTER INTRODUCING INTO SAID CIRCULATING AIR UNDER PRESSURE A SMALL AMOUNT OF AN ATOMIZED LIQUID COOLANT TO ACHIEVE CIRCULATION OF SAID LIQUID COOLANT WITH SAID AIR.
References Cited (Backward Citations)
US2160182A
Cited
US2290129A
Cited
US2298716A
Cited
US2348738A
Cited
US2750625A
Cited
US2903740A
Cited
US2899709A
Cited
US2792593A
Cited
US2890485A
Cited
US2935764A
Cited
FR1208633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |