Mold assembly
Abstract
Abstract A MOLD ASSEMBLY FOR VACUUM FORMING ARTICLES OF MOLTEN THERMOPLASTIC MATERIAL SUCH AS A GLASS MAKING MATERIAL. A MOLD MEMBER IS SEPARABLY SUPPORTED IN A CAVITY OF A MOLD SUPPORT MEMBER WITH THE FACING SURFACES OF THE WALLS OF SUCH MEMBERS IN INTIMATE CONTACT WITH EACH OTHER. THEFORMING SURFACE OFTHE MOLD MEMBER WHICH IS CONTACTED BY THE THERMOPLASTIC MATERIAL DURING THE FORMING THEREOF COMPRISES A FORAMINOUS OR PERFORATED CERAMIC COATING OF A THERMAL BARRIER MATERIAL, THE FORAMINA OF THE COATING EXTENDING THERETHROUGH AND CONNECTING SAID FORMING SURFACE WITH VACUUM PASSAGES EXTENDING THROUGH THE MOLD MEMBER TO THE EXTERIOR THEREOF FOR CONNECTION WITH A SOURCE OF VACUUM FOR THEVACUUM FORMING PURPOSES.
Inventors
- 👤 J Giffen
Bibliographic Details
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |