Method for producing thin-walled,collapsible containers or packages
Abstract
Abstract A METHOD FOR PRODUCING THIN-WALLED, COLLAPSIBLE PACKAGES EACH HAVING A PROTRUDING, RELATIVELY THICK-WALLED TUBULAR BODY FOR HOLDING A HYPODERMIC NEEDLE BY: (A) INFLATING AN INTERMEDIATE PART OF A STIFF TUBULAR BLANK OF THERMOPLASTIC MATERIAL IN HEATED CONDITION TO A SMALL WALL-THICKNESS, USUALLY LESS THAN 1/100 INCH, WHILE THE ADJACENT BLANK PARTS ARE NOT INFLATED TO ANY SUBSTANTIAL DEGREE, (B) CUTTING THE INFLATED PART TRANSVERSELY, (C) INSERTING THE NEEDLE PORTION OF THE HYPODERMIC INTO THE DAJACENT BLANK PART, AND (D) HEAT-SEALING THE OPPOSITE ENDS OF THE PACKAGE. THE DEGREE OF INFLATION AND THE SHAPE OF THE RESULTING PACKAGE MAY BE CONTROLLED BY INFLATING IN A MOULD CAVITY, OR BY HEATING THE BLANK ONLY ALONG THE LONGITUDINAL PARTS WHICH ARE TO BE INFLATED.
Inventors
- 👤 Erik Lauritzen
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |