Plastic-molding apparatus
Abstract
Abstract THE MOLDING APPARATUS OF THIS INVENTION INCLUDES A DIE HAVING A MOLD CAVITY, THE DIE INCLUDING TWO MOLD SECTIONS SELECTIVELY MOVABLE INTO AND OUT OF CLOSING ENGAGEMENT, THESE MOLD SECTIONS HAVING PARTING SURFACES WHICH ARE SEALINGLY ENGAGEABLE WITH EACH OTHER, THE MOLD CAVITY BEING DEFINED BY TWO MATING CAVITY PORTIONS IN THE PARTING SURFACES, RESPECTIVELY, THE CAVITY HAVING OPPOSITE ENDS, ONE END BEING IN ONE CAVITY PORTION AND THE OTHER END BEING IN THE OTHER CAVITY PORTION, A CIRCULAR GATE PROVIDED IN THE PARTING SURFACES, WHICH ENCIRCLES THE CAVITY, AND AN ANNULAR SPRUE ALSO PROVIDED IN THE PARTING SURFACES, WHICH ENCIRCLES THE CAVITY, THE SPRUE BEING RADIALLY POSITIONED BETWEEN THE GATE IN THE CAVITY AND LOCATED APPROXIMATELY MIDWAY BETWEEN THE OPPOSITE ENDS OF THE CAVITY.
Inventors
- 👤 Roy A Patton Jr
Bibliographic Details
Claims Analysis
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |