Plastic molding apparatus
Abstract
Abstract APPARATUS FOR INJECTION MOLDING EMBOSSED PLASTIC ARTICLES IS DISCLOSED HEREIN. THE APPARATUS IS CHARACTERIZED BY A MOLD ASSEMBLY COMPRISING A FIRST MOLD FOR FORMING THE BASE ARTICLE AND A SECOND MOLD FOR MOLDING THE EMBOSSED DESIGN THEREON, WITH BOTH MOLDS BEING MOUNTED ON A MOVABLE PLATEN. EACH MOLD COMPRISES A CORE AND PLURALITY OF RADIALLY MOVABLE SEQMENTS IN THE FORM OF ARCUATE WEDGES WITH TAPERED SURFACES AND COOPERATING WITH SLOPING SHOULDERS ON THE MOLD ASSEMBLY SO THAT BY MOVEMENT OF THE MOVABLE PLATEN THE SEGMENTS CAN EITHER BE MOVED INWARDLY TO FORM THE MOLD CAVITIES OR OUTWARDLY TO RELEASE THE ARTICLES. A FIXED PLATEN HAVING A MOLTEN PLASTIC INJECTION MENAS IS MOUNTED IN SPACED RELATIONSHIP WITH AND OPPOSITE TH MOLD ASSEMBLY. A FIXEDLY MOUNTED HYDRAULIC CLYINDER ACTS TO MOVE THE MOVABLE PLATEN TOWARDS AND AWAY FROM THE FIXED PLATEN.
Inventors
- 👤 Frank W Cooper
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |