Apparatus for pressurizing hollow articles during molding
Abstract
Abstract MOLDING APPARATUS INCLUDING A BLOW MOLD CONTAINING A HOLLOW BLOWN ARTICLE HAVING AN OPEN NECK PORTION AND A TRANSFER DEVICE TO BE INDEXED SUCCESSIVELY INTO REGISTRATION WITH THE BLOW MOLD. THE TRANSFER DEVICE IS BROUGHT INTO ENGAGEMENT WITH THE OPEN NECK OF THE ARTICLE. FLUID PRESSURE IS SUPPLIED THROUGH THE TRANSFER DEVICE FOR GRIPPING THE NECK OF THE ARTICLE AND TO APPLY FLUID PRESSURE TO THE INTERIOR OF THE ARTICLE. THE BLOW MOLD IS OPENED TO RELEASE THE ARTICLE AND THE DEVICE IS ADVANCED TO EXTRACT THE ARTICLE AND CARRY IT TO A DISCHARGE STATION WHILE MAINTAINING INTERNAL FLUID PRESSURE DURING THE COOLING STEP. AT THE DISCHARGE STATION THE FLUID PRESSURE IS REDUCED TO ALLOW THE TRANSFER DEVICE TO RELEASE THE ARTICLE.
Inventors
- 👤 Emery I Valyi
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |