Apparatus for blow molding of plastic articles
Abstract
Abstract A BLOW MODLING APPARATUS WHEREIN ONE OR MORE EXTRUSION NOZZLES TRAVEL ALONG A CIRCULAR PATH ABOUT A VERTICAL AXIS AND SUPPLY PARISONS TO OPEN-AND-SHUT BLOW MOLDS IN A SERIES OF MOLD UNITS INSTALLED ADJACENT TO THE CIRCULAR PATH AND COOPERATING WITH BLOWING AND CALIBRATING UNITS TO CONVERT PARISONS INTO BOTLES OR ANALOGOUS HOLLOW PLASTIC ARTICLES. THE DRIVE WHICH MOVES THE NOZZLE OR NOZZLES ALSO TRANSMITS MOTION TO PARTS OF THE MOLD UNITS AND BLOWING UNITS SO THAT THE OPERATION OS SUCH UNITS IS SYNCHRONIZED WITH MOVEMENTS OF THE NOZZLES WHICH TRAVEL CONTINOUSLY AND EXTRUDE CONTINUOUS TUBULAR OR OTHERWISE CONFIGURATED BLANKS OF PLASTICIZED MATERIAL REQUISTE LENGTHS ARE SEVERED FROM SUCH BLANKS TO FORM PARISONS WHICH ARE RECEIVED BETWEEN THE MOLD SECTIONS IN THE MOLD UNITS AND ARE CONVERTED INTO HOLLOW ARTICLES IN RESPONSE TO INJECTION OF COMPRESSED GAS OR IN RESPONSE TO EVACULATION OF AIR FROM THE CAVITIES WHICH RECEIVE THE PARISONS.
Inventors
- 👤 Gottfried Mehnert
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) | 1974-01-18 | 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 |