US3231656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method of plastic molding
Assignee: OI Glass Inc
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Filing: 1961-06-30
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Granted: 1966-01-25
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Ninneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:08
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/53; B29C45/03; B29C2045/538
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
AN INJECTION MOLDING APPARATUS FOR MAKING PLASTIC ARTICLES COMPRISING A RAM RECIPROCABLY OPERATED WITHIN A FEED BUSHING, SAIDBUSHING COMPRISING A WATER COOLED FIRST SECTION AND A HEATED SECOND SECTION, MEANS FOR INTRODUCING A PLASTIC MASS INTO SAID SECOND SECTION, SAID BUSHING HAVING A THIRD COOLED SECTION IN SERIATIM WITH SAID FIRST TWO SECTIONS, AND SAID BUSHING CONNECTED TO A MOLD HAVING A CAVITY IN WHICH THE ARTICLES ARE FORMED.
Claim 2
Dependent Claim
69 words
AN INJECTION MOLDING APPARATUS FOR MAKING PLASTIC ARTICLES COMPRISING A RAM RECIPROCABLY OPERATED WITHIN A FEED BUSHING, SAIDBUSHING COMPRISING A WATER COOLED FIRST SECTION AND A HEATED SECOND SECTION, MEANS FOR INTRODUCING A PLASTIC MASS INTO SAID SECOND SECTION, SAID BUSHING HAVING A THIRD COOLED SECTION IN SERIATIM WITH SAID FIRST TWO SECTIONS, AND SAID BUSHING CONNECTED TO A MOLD HAVING A CAVITY IN WHICH THE ARTICLES ARE FORMED.
Claim 3
Independent Claim
87 words
A METHOD OF INJECTION MOLDING PLASTIC ARTICLES BY MEANS OF A RAM WHERIN WEAR TO THE TIP OF SAID RAM DUE TO HIGH TEMPERATURES IS REDUCED, COMPRISING PASSING SAID RAM TIP THROUGH A POSITIVELY COOLED ZONE, CONTACTING A HEATED PLASTIC MASS WITH SAID RAM TIP FOR THE PURPOSE OF ADVANCING SAID MASS TO A MLDING CAVITY, AND THEREAFTER QUICKLY MOVING SAID RAM TIP IN CONTACT WITH SAID PLASTIC MASS SUCCESSIVELY THROUGH A COOLED ZONE AND DIRECTLY INTO A MOLD CAVITY WHERE THE ARTICLE ASSUMES ITS FINAL FORM.
Claim 4
Independent Claim
87 words
A METHOD OF INJECTION MOLDING PLASTIC ARTICLES BY MEANS OF A RAM WHERIN WEAR TO THE TIP OF SAID RAM DUE TO HIGH TEMPERATURES IS REDUCED, COMPRISING PASSING SAID RAM TIP THROUGH A POSITIVELY COOLED ZONE, CONTACTING A HEATED PLASTIC MASS WITH SAID RAM TIP FOR THE PURPOSE OF ADVANCING SAID MASS TO A MLDING CAVITY, AND THEREAFTER QUICKLY MOVING SAID RAM TIP IN CONTACT WITH SAID PLASTIC MASS SUCCESSIVELY THROUGH A COOLED ZONE AND DIRECTLY INTO A MOLD CAVITY WHERE THE ARTICLE ASSUMES ITS FINAL FORM.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |