Patent US3256378A successfully refreshed from Google Patents.
US3256378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating packing tubes of thermoplastic material
Assignee: Individual
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Filing: 1964-02-19
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Granted: 1966-06-14
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Expires: 1984-02-19
Abstract
No abstract record available.
Inventors
- 👤 Hauf Lazare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:26
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/42; B29C31/00; B29C31/002; B29C45/00; B29C45/14; B29C45/14598; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/766; B29D; B29D23/00; B29D23/20; B29C43/34; B29C2043/3433; B29C2043/3444; B29K; B29K2105/00; B29K2105/0058; B29K2105/007; B29L; B29L2023/00; B29L2023/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A METHOD OF FABRICATING A COLLAPSIBLE TUBE OF THERMOPLASTIC MATERIAL USING A MALE DIE PART PROVIDED WITH A SHAPING FACE HAVING A REDUCED, PERIPHERAL SURFACE ADJACENT ITS END AND A FEMALE DIE PART PROVIDED WITH AN OPEN RECES CAVITY TO RECEIVE AND MATE WITH SAID SHAPING FACE UPON MOVING SAID PARTS TOGETHER TO DEFINE A MOLDING CAVITY FOR SHAPING A HEADPIECE ON AN END OF THE TUBE, COMPRISING THE STEPS OF PLACING OVER SAID MALE PART A PREFORMED TUBULAR ELEMENT WITH AN END PORTION THEREOF POSITIONED IN PROTRUDING, CONCENTRICALLY SPACED RELATION TO SAID REDUCED SURFACE OF SAID MALE DIE PART AND DEFINING THEREWITH A NARROW ANNULAR SPACE, INJECTING AT RELATIVELY LOW PRESSURE AND TEMPERATURE INTO THE BOTTOM ZONE OF SAID CAVITY A WELL DEFINED AMOUNT OF VISCOUS PLASTICIZED THERMOPLASTIC MATERIAL IN THE FORM OF A MOMENTARILY SYMMETRICAL SELFSUSTAINING GLOBULE, AND RAPIDLY FORCING SAID DIE PARTS TOGETHER TO POSITION SAID END PORTION OF SAID ELEMENT WITHIN SAID RECEISS CAVITY AND TO PRESSURE-SHAPE SAID GLOBULE WITHIN THE CONFINES OF SAID MOLDING CAVITY WHEREBY A PORTION OF SAID GLOBULE FLOWS INTO SAID ANNULAR SPACE AND FUSES WITH SAID END PORTION OF SAID TUBULAR ELEMENT.
Claim 2
Independent Claim
191 words
A METHOD OF FABRICATING A COLLAPSIBLE TUBE OF THERMOPLASTIC MATERIAL USING A MALE DIE PART PROVIDED WITH A SHAPING FACE HAVING A REDUCED, PERIPHERAL SURFACE ADJACENT ITS END AND A FEMALE DIE PART PROVIDED WITH AN OPEN RECES CAVITY TO RECEIVE AND MATE WITH SAID SHAPING FACE UPON MOVING SAID PARTS TOGETHER TO DEFINE A MOLDING CAVITY FOR SHAPING A HEADPIECE ON AN END OF THE TUBE, COMPRISING THE STEPS OF PLACING OVER SAID MALE PART A PREFORMED TUBULAR ELEMENT WITH AN END PORTION THEREOF POSITIONED IN PROTRUDING, CONCENTRICALLY SPACED RELATION TO SAID REDUCED SURFACE OF SAID MALE DIE PART AND DEFINING THEREWITH A NARROW ANNULAR SPACE, INJECTING AT RELATIVELY LOW PRESSURE AND TEMPERATURE INTO THE BOTTOM ZONE OF SAID CAVITY A WELL DEFINED AMOUNT OF VISCOUS PLASTICIZED THERMOPLASTIC MATERIAL IN THE FORM OF A MOMENTARILY SYMMETRICAL SELFSUSTAINING GLOBULE, AND RAPIDLY FORCING SAID DIE PARTS TOGETHER TO POSITION SAID END PORTION OF SAID ELEMENT WITHIN SAID RECEISS CAVITY AND TO PRESSURE-SHAPE SAID GLOBULE WITHIN THE CONFINES OF SAID MOLDING CAVITY WHEREBY A PORTION OF SAID GLOBULE FLOWS INTO SAID ANNULAR SPACE AND FUSES WITH SAID END PORTION OF SAID TUBULAR ELEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |