US3579725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing hollow articles
Assignee: T W Manufacturing Co Inc
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Filing: 1968-05-15
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Granted: 1971-05-25
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Expires: 1988-05-15
Abstract
Abstract A METHOD OF MOLDING AND SUBSEQUENTLY BLOW MOLDING PLASTIC PARTS IN SUITABLE MOLDS BY RETAINING THE PARTS, AFTER MOLDING, ON CORES WHICH ARE SUBSEQUENTLY MOVED TOGETHER WITH THE PARTS TO A POSITION FROM WHICH THEY ARE INSERTED INTO THE RESPECTIVE BLOW MOLDS FOR THE BLOW MOLDING OPERATION AND A MOLDING MACHINE FOR PERFORMING THE METHOD ACCORDING TO THE INVENTION. THE MOLDING MACHINE HAS MOVING MEANS FOR MOVING THE CORES BETWEEN A POSITION IN WHICH THE COOPERATE WITH THE INJECTION MOLDING MEANS AND A POSITION IN WHICH THEY COOPERATE WITH THE BLOW MOLDING MEANS OF THE MACHINE.
Inventors
- 👤 Benth Preben Hansen
- 👤 Saul Blitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:19
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/064; B29C2049/023
Claims Analysis
Total Claims: 0
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References 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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |