US3271490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fabricating tubes
Assignee: Dart Industries Inc
•
Filing: 1962-10-05
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Granted: 1966-09-06
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Cattaneo Jean-Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:53
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/20; B29K; B29K2027/00; B29K2027/06; B29L; B29L2023/00; B29L2023/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A METHOD OF PRODUCING A COLLAPSIBLE TUBE, ADAPTED FOR HOUSING AND DISEPNSING A FLOWABLE COMMODITY, SAID TUBE BEING FABRICATED FROM A FLEXIBLE RESINOUS THERMOPLASTIC MATERIAL HAVING A "MEMORY," SAID TUBE HAVING A GENERALLY TUBULAR BODY PORTION AND AN INTEGRAL HEAD PORTION AT ONE END OF SAID BODY PORTION, THE HEAD PORTION HAVING A DISPENSING PASSAGEWAY; SAID METHOD COMPRISING THE STEP OF DEFORMING PART OF SAID BODY PORTION BY APPLICATION OF HEAT AND PRESSURE DIFFERENTIAL TO THE PART TO CAUSE THE PART TO BECOME MORE READILY DEFORMABLE THAN THE REMAINDER OF THE TUBE AND TO ANNUL THE CONVEXITY THEREOF, SAID PART BEING A MAJOR SEGMENT OF ONLY AN AXIAL HALF OF SAID BODY PORTION AND SAID PART BEIN DEFORMED TO LIE ADJACENT TO AND SPACED FROM A CORRESPONDING PART OF THE OTHER AXIAL HEAD OF SAID BODY PORTION SUCH THAT SAID PART MAY BE FLEXIBLY EXPANDED TO ITS POSITION PRIOR TO DEFORMATION UPON FILLING THE TUBE WITH SAID COMMODITY AND THE PART WILL RETURN TO ITS DEFORMED POSITION DUE TO SAID "MEMORY" UPON DISPERSING THE COMMODITY FROM THE TUBE.
Claim 2
Independent Claim
178 words
A METHOD OF PRODUCING A COLLAPSIBLE TUBE, ADAPTED FOR HOUSING AND DISEPNSING A FLOWABLE COMMODITY, SAID TUBE BEING FABRICATED FROM A FLEXIBLE RESINOUS THERMOPLASTIC MATERIAL HAVING A "MEMORY," SAID TUBE HAVING A GENERALLY TUBULAR BODY PORTION AND AN INTEGRAL HEAD PORTION AT ONE END OF SAID BODY PORTION, THE HEAD PORTION HAVING A DISPENSING PASSAGEWAY; SAID METHOD COMPRISING THE STEP OF DEFORMING PART OF SAID BODY PORTION BY APPLICATION OF HEAT AND PRESSURE DIFFERENTIAL TO THE PART TO CAUSE THE PART TO BECOME MORE READILY DEFORMABLE THAN THE REMAINDER OF THE TUBE AND TO ANNUL THE CONVEXITY THEREOF, SAID PART BEING A MAJOR SEGMENT OF ONLY AN AXIAL HALF OF SAID BODY PORTION AND SAID PART BEIN DEFORMED TO LIE ADJACENT TO AND SPACED FROM A CORRESPONDING PART OF THE OTHER AXIAL HEAD OF SAID BODY PORTION SUCH THAT SAID PART MAY BE FLEXIBLY EXPANDED TO ITS POSITION PRIOR TO DEFORMATION UPON FILLING THE TUBE WITH SAID COMMODITY AND THE PART WILL RETURN TO ITS DEFORMED POSITION DUE TO SAID "MEMORY" UPON DISPERSING THE COMMODITY FROM THE TUBE.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |