Patent US3277223A successfully refreshed from Google Patents.
US3277223A
Expired / Lapsed
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Method and apparatus for forming a hollow plastic article
Assignee: OI Glass Inc
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Filing: 1965-12-14
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Granted: 1966-10-04
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Expires: 1985-12-14
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Curto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:11
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/58; B29C49/02; B29C49/06; B29C49/18; B29C2049/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A METHOD OF BLOW MOLDING A PLASTIC ARTICLE BY THE STEPS OF INJECTION MOLDING A PARISON ABOUT A CORE PIN OF VARYING SURFACE CHARACTERISTICS AFFECTING PARISON-PIN ADHERENCE, INTRODUCING A LIMITED VOLUME OF A GASEOUS MEDIUM AT RELATIVELY LOW PRESSURE INTO THE PARISON TO PARTIALLY AND DIFFERENTIALLY EXPAND THE PARISON FROM THE SURFACE OF THE CORE PIN, ENCLOSING THE DIFFERENTIALLY EXPANDED PARISION IN A BLOW MOLD AND COMPLETELY EXPANDING THE SAME INTERIORLY OF THE BLOW MOLD.
Claim 2
Independent Claim
75 words
A METHOD OF BLOW MOLDING A PLASTIC ARTICLE BY THE STEPS OF INJECTION MOLDING A PARISON ABOUT A CORE PIN OF VARYING SURFACE CHARACTERISTICS AFFECTING PARISON-PIN ADHERENCE, INTRODUCING A LIMITED VOLUME OF A GASEOUS MEDIUM AT RELATIVELY LOW PRESSURE INTO THE PARISON TO PARTIALLY AND DIFFERENTIALLY EXPAND THE PARISON FROM THE SURFACE OF THE CORE PIN, ENCLOSING THE DIFFERENTIALLY EXPANDED PARISION IN A BLOW MOLD AND COMPLETELY EXPANDING THE SAME INTERIORLY OF THE BLOW MOLD.
Claim 3
Dependent Claim
64 words
IN AN APPARATUS FOR BLOW MOLDING PLASTIC ARTICLES AND INCLUDING A PARISON MOLD HAVING A CAVITY OF THE EXTERNAL CONFIGURATION OF THE PARISON, A CORE PIN ADAPTED TO BE POSITIONED WITHIN SAID PARISON MOLD TO FORM AN INJECTION MOLD CAVITY, MEANS FOR INTRODUCING PLASTICIZED MATERIAL INTO SAID INJECTION MOLD CAVITY TO FORM A PARISON, MEANS FOR REMOVING SAID PARISON CORE PIN WITH SAID PARI-
Claim 4
Dependent Claim
64 words
IN AN APPARATUS FOR BLOW MOLDING PLASTIC ARTICLES AND INCLUDING A PARISON MOLD HAVING A CAVITY OF THE EXTERNAL CONFIGURATION OF THE PARISON, A CORE PIN ADAPTED TO BE POSITIONED WITHIN SAID PARISON MOLD TO FORM AN INJECTION MOLD CAVITY, MEANS FOR INTRODUCING PLASTICIZED MATERIAL INTO SAID INJECTION MOLD CAVITY TO FORM A PARISON, MEANS FOR REMOVING SAID PARISON CORE PIN WITH SAID PARI-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |