Patent US3170971A successfully refreshed from Google Patents.
US3170971A
Expired / Lapsed
US
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Method for making hollow plastic articles
Assignee: OI Glass Inc
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Filing: 1962-06-22
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Granted: 1965-02-23
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Ninneman
- 👤 Anthony J Scalora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:04
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/064; B29C2049/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A METHOD OF MAKING A BLOWN PLASTIC ARTICLE FROM A PARISON DEFINING A CLOSED BLOWABLE SHAPE AND HAVING AN INJECTION MOLDED FINISH PORTION, THE STEPS OF INJECTION MOLDING BOTH THE PARISON FINISH PORTION AND THE CLOSED PARISON BLOWABLE PORTION ABOUT A CYLINDRICAL SLEEVE, AXIALLY RETRACTING THE CYLINDRICAL SLEEVE FROM THE PARISON BLOWABLE PORTION PRIOR TO BLOWING OF THE PARISON, AND CONTINUING TO SUPPORT THE PARISON INJECTION MOLDED FINISH PORTION BY THE SLEEVE DURING BLOWING OF THE BLOWABLE PORTION OF THE PARISON.
Claim 2
Dependent Claim
82 words
IN A METHOD OF MAKING A BLOWN PLASTIC ARTICLE FROM A PARISON DEFINING A CLOSED BLOWABLE SHAPE AND HAVING AN INJECTION MOLDED FINISH PORTION, THE STEPS OF INJECTION MOLDING BOTH THE PARISON FINISH PORTION AND THE CLOSED PARISON BLOWABLE PORTION ABOUT A CYLINDRICAL SLEEVE, AXIALLY RETRACTING THE CYLINDRICAL SLEEVE FROM THE PARISON BLOWABLE PORTION PRIOR TO BLOWING OF THE PARISON, AND CONTINUING TO SUPPORT THE PARISON INJECTION MOLDED FINISH PORTION BY THE SLEEVE DURING BLOWING OF THE BLOWABLE PORTION OF THE PARISON.
References Cited (Backward Citations)
GB758299A
Cited
US2804654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |