US3707591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed molding of hollow plastic articles
Assignee: Trans Container Corp
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Filing: 1971-07-02
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Granted: 1972-12-26
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Expires: 1991-07-02
Abstract
Abstract A plastic parison with neck and body portions is formed over a blow nozzle and within neck and body molds at a forming station. The parison and nozzle are transferred to a region outside the body forming mold and the hot body portion is cooled while the parison neck portion remains in a neck mold. Gas is next blown at a blow station and via the nozzle into the partially cooled parison body portion for effecting its expansion into container body shape within a blow mold, and the neck mold is then opened and the blown container is separated from the nozzle, as for example by the blow mold.
Inventors
- 👤 George A Chalfant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:34
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/02; B29C49/06; B29C49/061; B29C49/062; B29C49/063; B29C2049/023; B29C2949/00; B29C2949/07; B29C2949/0715; B29C35/00; B29C35/16; B29C49/6427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |