US3575949A
Expired / Lapsed
US
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Method for in-mold tube formation
Assignee: Polypump Curacao NV
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Filing: 1969-05-05
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Granted: 1971-04-20
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Expires: 1989-05-05
Abstract
Abstract TAINER WALL SEALS THE CHANNEL TO FORM A TUBE, AND BONDS ITSELF TO THE MATERIAL OF THE CHANNEL-DEFINING ELEMENT. A METHOD OF INCORPORATING INTO THE WALL OF A BLOWMOLDED PLASTIC CONTAINER A TUBULAR PASSAGE WHICH CAN ALSO INCLUDE A PUMP MEANS, A NOZZLE AT THE UPPER END, AND A LIQUID INTAKE APERTURE AT THE OTHER END. AN ELONGATED CHANNEL-DEFINING ELEMENT IS POSITIONED AGAINST THE INSIDE WALL OF A MOLD CAVITY AND THEN PLASTIC CONTAINER IS BLOW-MOLDED AGAINST IT. THE MATERIAL FORMING THE CON-
Inventors
- 👤 Frederick Harold Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/20; B05; B05B; B05B11/00; B05B11/0005; B05B11/0037; B05B11/01; B05B11/10; B05B11/1028; B05B11/1032; B05B11/1033; F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0063; B05B15/00; B05B15/30; B29C2049/2017
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |