Method for injection molding an infant's feeding bottle
Abstract
Abstract AN INFANT''S FEEDING BOTTLE HAVING AN INTERNAL BOTTLE WALL OF CYLINDRICAL SHAPE FOR RECEIVING A SLIDABLE FOLLOW-UP PISTON IS MADE BY INJECTION MOLDING IN A SPLIT MOLD HAVING OUTER MOLD PARTS MOVABLE RELATIVE TO AN INTERNAL CORE. AFTER INJECTION OF THE PLASTIC, THE OUTER MOLD PARTS ARE SHIFTED FROM THE BOTTLE BODY AND THE CORE IS MOVED AXIALLY DOWNWARD THROUGH AN OPEN BOTTOM END OF THE BOTTLE BODY. THE UPPER LARGER DIAMETER PORTION OF THE CORE ACTS TO EXPAND AND CALIBRATE THE LOWER, SOFT AND PLASTIC CONDITION, TAPERING BOTTLE BODY TO A TRUER CYLINDRICAL SHAPE. DURING REMOVAL OF THE CORE, THE UPPER PORTION OF THE BOTTLE AROUND THE CORE IS COOLED BY A FLUID. A FOLLOW-UP PISTON OF THERMOPLASTIC MATERIAL IS MOLDED AND THEN STORED FOR A PROLONGED PERIOD OF TIME IN A HOLLOW CYLINDER TO PERMIT SHIRNKAGE FROM AN OVERSIZED DIAMETER TO THAT DESIRED FOR PROVIDING SEALING CONTACT WITH THE CYLINDRICAL BODY WALL.
Inventors
- 👤 Heinrich Denzler Von Matt
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |