Patent US3270115A successfully refreshed from Google Patents.
US3270115A
Expired / Lapsed
US
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Method and apparatus for molding
Assignee: Inventions Finance Corp
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Filing: 1961-02-14
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Granted: 1966-08-30
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Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert Nouel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:39
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/20; B29C45/23; B29C45/46; B29C45/56; Y; Y10; Y10S; Y10S425/00; Y10S425/224; Y10S425/225
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
IN A METHOD OF MOLDING PLASTIC ARTICLES, THE STEPS OF INJECTING MATERIAL IN CONDITION TO BE MOLDED UNDER AN INJECTION PRESSURE INTO A MOLD HAVING A CAVITY THROUGH A PASSAGEWAY THERETO, CLOSING SAID PASSAGEWAY WITH CONTROLLED MOVEMENT TO PROVIDE A SLIGHT WEXCESS OF MATERIAL IN SAID MOLD, AND THEN COMPRESSING THE MATERIAL IN SAID MOLD.
Claim 2
Dependent Claim
55 words
IN A METHOD OF MOLDING PLASTIC ARTICLES, THE STEPS OF INJECTING MATERIAL IN CONDITION TO BE MOLDED UNDER AN INJECTION PRESSURE INTO A MOLD HAVING A CAVITY THROUGH A PASSAGEWAY THERETO, CLOSING SAID PASSAGEWAY WITH CONTROLLED MOVEMENT TO PROVIDE A SLIGHT WEXCESS OF MATERIAL IN SAID MOLD, AND THEN COMPRESSING THE MATERIAL IN SAID MOLD.
Claim 3
Dependent Claim
127 words
IN AN INJECTION MOLDING MACHINE HAVING AN INJECTION CHAMBER, AND AN INJECTION PASSAGEWAY COMMUNICATING SAID CHAMBER WITH A MOLD CAVITY, THE COMBINATION COMPRISING: A REGULATOR MEMBER MOVABLE TO CLOSE SAID PASSAGEWAY, AND MEANS NORMALLY BIASING SAID MEMBER TO A POSITION OPENING SAID PASSAGEWAY, SAID MEMBER HAVING MULITPLE SEPARATE PRESSURE FACES PRESENTED TO MATERIAL IN SAID PASSAGEWAY, WHEREBY MATERIAL IN SAID PASSAGEWAY ACTS ON AT LEAST ONE OF SAID PRESSURE FACES TO MOVE SAID MEMBER TO CLOSE SAID PASSAGEWAY IN RESPONSE TO MATERIAL FILLING SAID CAVITY, AND THEREAFTER ACTS ON OTHER OF SAID PRESSURE FACES TO MAINTAIN SAID MEMBER CLOSING SAID PASSAGEWAY UNTIL THE FORCE OF MATERIAL APPLIED TO SAID MEMBER BY MATERIAL IN SAID CAVITY DECREASES BELOW THE FORCE APPLIED TO SAID MEMBER BY SAID BIASING MEANS.
Claim 4
Dependent Claim
127 words
IN AN INJECTION MOLDING MACHINE HAVING AN INJECTION CHAMBER, AND AN INJECTION PASSAGEWAY COMMUNICATING SAID CHAMBER WITH A MOLD CAVITY, THE COMBINATION COMPRISING: A REGULATOR MEMBER MOVABLE TO CLOSE SAID PASSAGEWAY, AND MEANS NORMALLY BIASING SAID MEMBER TO A POSITION OPENING SAID PASSAGEWAY, SAID MEMBER HAVING MULITPLE SEPARATE PRESSURE FACES PRESENTED TO MATERIAL IN SAID PASSAGEWAY, WHEREBY MATERIAL IN SAID PASSAGEWAY ACTS ON AT LEAST ONE OF SAID PRESSURE FACES TO MOVE SAID MEMBER TO CLOSE SAID PASSAGEWAY IN RESPONSE TO MATERIAL FILLING SAID CAVITY, AND THEREAFTER ACTS ON OTHER OF SAID PRESSURE FACES TO MAINTAIN SAID MEMBER CLOSING SAID PASSAGEWAY UNTIL THE FORCE OF MATERIAL APPLIED TO SAID MEMBER BY MATERIAL IN SAID CAVITY DECREASES BELOW THE FORCE APPLIED TO SAID MEMBER BY SAID BIASING MEANS.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |