US3065501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for making a plastic article
Assignee: OI Glass Inc
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Filing: 1959-10-15
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Granted: 1962-11-27
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Expires: 1979-10-15
Abstract
No abstract record available.
Inventors
- 👤 Richard C Gasmire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/66; B29C35/00; B29C35/16; B29C2035/1616; B29C2035/1625; B29C2035/165; B29C49/6604; B29C2049/6606; B29C2049/6607; B29C2049/6615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN APPARATUS FOR MAKING PLASTIC ARTICLES FROM A TUBE EXTRUDED FROM AN ORIFICE AND HAVING AN OPEN END, THE TUBE BEING PREVIOUSLY EXPANEDED IN AN ENCLOSING BELOW MOLD, COMPRISING A CONDUIT FOR INJECTING LIQUID CARBON DIOXIDE INTO SAID TUBE THROUGH THE OPEN END THEREOF SAID CONDUIT TERMINATING IN A RESTRICTED ORIFICE THROUGH WHICH THE CARBON DIOXIDE ENTERS THE TUBE FOR EXPANSION THEREIN, AND MEANS FOR CONTROLLING THE INTERNAL PRESSURE DEVELOPED INTERIORLY OF SAID TUBE TO PREDETERMINE THE PHASE STATE OF CARBON DIOXIDE INTRODUCED THEREINTO THROUGH SAID ORIFICE.
Claim 2
Dependent Claim
79 words
IN A METHOD OF MAKING A PLASTIC ARTICLE, THE STEPS OF ENCLOSING A HEATED EXTRUDED TUBE IN A BLOW MOLD HAVING INTERIOR CHILL WALLS, INTRODUCING INTO SAID TUBE A GASEOUS BLOWING MEDIUM AT SUBSTANTIALLY AN AMBIENT TEMPERATURE TO EXPAND THE TUBE AGAINST THE CHILL WALLS OF THE ENCLOSING MOLD, SUBSEQUENTLY INTRODUCING INTO THE EXPANDED TUBE A NON-GASEOUS CHILLING MEDIUM AND EFFECTING A CHANGE OF STATE IN SAID CHILLING MEDIUM INTERNALLY OF THE TUBE TO COOL THE PREVIOUSLY EXPANDED TUBE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |