Patent US3192297A successfully refreshed from Google Patents.
US3192297A
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Method of and apparatus for molding reinforced plastics
Assignee: Compagnie de Saint Gobain SA
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Filing: 1962-06-19
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Granted: 1965-06-29
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Expires: 1982-06-19
Abstract
No abstract record available.
Inventors
- 👤 Gringras Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29C70/467; B29C43/00; B29C43/32; B29C43/58; B29C45/00; B29C45/14; B29C45/14778; B29C45/14786; B29C45/17; B29C45/46; B29C45/56; B29C45/76; B29C45/7613; B29C70/06; B29C70/10; B29C70/12; B29C2791/00; B29C2791/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD OF INJECTION MOLDING OBJECTS OF PLASTIC MATERIAL REINFORCED WITH FIBROUS MATERIAL, COMPRISING PLACING THE REQUISITE AMOUNT OF FIBROUS REINFORCING MATERIAL IN A MULTI-PART MOLD DIVIDED TO PERMIT MOVEMENT OF THE MOLD PARTS TOWARDS AND FROM FROM EACH TOTHER, MOVING THE PARTS OF THE MOLD TOGETHER INTO SUBSTANTIALLY THEIR CLOSED POSITION WHEREIN THEY CONJOINTLY DEFINE A MOLD CAVITY HAVING THE DIMENSIONS OF THE FINISHED MOLDED ARTICLE TO BE MADE INJECTING LIQUID RESIN INTO THE MOLD IN SMALL SUCCESSIVE PORTIONS WHILE ALLOWING THE MOLD TO OPEN UNDER THE PRESSURE OF THE INJECTED RESIN DURING EACH SAID RESIN-INJECTING STEP, THRUSTING THE PARTS OF THE MOLD TOGETHER INTO SUBSTANTIALLY SAID CLOSED POSITION AFTER EACH SAID RESIN-INJECTING STEP WHILE STOPPING INJECTION OF RESIN INTO THE MOLD, AND SEQUENTLY AND CYCLICALLY REPEATING SAID RESIN-INJECTING AND MOLD-CLOSING STEPS UNTIL THE MOLD IS SUBSTANTIALLY FILLED TO THE DESIRED EXTENT.
Claim 2
Independent Claim
143 words
A METHOD OF INJECTION MOLDING OBJECTS OF PLASTIC MATERIAL REINFORCED WITH FIBROUS MATERIAL, COMPRISING PLACING THE REQUISITE AMOUNT OF FIBROUS REINFORCING MATERIAL IN A MULTI-PART MOLD DIVIDED TO PERMIT MOVEMENT OF THE MOLD PARTS TOWARDS AND FROM FROM EACH TOTHER, MOVING THE PARTS OF THE MOLD TOGETHER INTO SUBSTANTIALLY THEIR CLOSED POSITION WHEREIN THEY CONJOINTLY DEFINE A MOLD CAVITY HAVING THE DIMENSIONS OF THE FINISHED MOLDED ARTICLE TO BE MADE INJECTING LIQUID RESIN INTO THE MOLD IN SMALL SUCCESSIVE PORTIONS WHILE ALLOWING THE MOLD TO OPEN UNDER THE PRESSURE OF THE INJECTED RESIN DURING EACH SAID RESIN-INJECTING STEP, THRUSTING THE PARTS OF THE MOLD TOGETHER INTO SUBSTANTIALLY SAID CLOSED POSITION AFTER EACH SAID RESIN-INJECTING STEP WHILE STOPPING INJECTION OF RESIN INTO THE MOLD, AND SEQUENTLY AND CYCLICALLY REPEATING SAID RESIN-INJECTING AND MOLD-CLOSING STEPS UNTIL THE MOLD IS SUBSTANTIALLY FILLED TO THE DESIRED EXTENT.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |