Patent US3271484A successfully refreshed from Google Patents.
US3271484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of balloons
Assignee: WR Grace and Co
•
Filing: 1963-12-31
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Granted: 1966-09-06
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Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 James H Brillinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:59
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/10; A63H2027/1025; A63H2027/1033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF FORMING A PERMANENTLY NON-SPHERICAL BALLOON WHICH INCLUDES FITTING THE NECK PORTION OF A PARTIALLY CROSSLINKED OLEFIN POLYMER HOLLOW BALLON PREFORM ON AN INFLATER PIPE, SUSPENDING THE PREFROM BY THE PIPE WITHIN A PERMEABLE WALL INTERNAL MOLD HAVING THE APPROXIMATE SIZE AND SHAPE OF THE INTENDED BALLON, HEATING THE PREFROM TO ABOVE THE CRYSTALLINE TRANSITION TEMPERATURE OF THE POLYMER, INFLATING THE PREFORM WITH A GAS AT MODERATE PRESSURE AND SIMULTANEOUSLY RAISING THE PREFORM WITHIN THE MOLD, THEREBY TO PREVENT ANY BUT YHE POLE PORTION OF THE EXPANDING PREFORM FROM TOUCHING THE MOLD UNTIL THE PREFORM HAS EXPANDED APPROXIMATELY TO ITS FINAL SIZE, CONTINUING THE EXPANSION UNTIL ALL AREAS SAVE THE NECK EXTREMITY ARE IN CONTACT WITH THE MOLD, COOLING THE BALLOON WHILE MAINTAINING THE FINAL INFLATION PRESSURE, DEFLATING THE BALLOON AND REMOVING IT FROM THE MOLD.
Claim 2
Independent Claim
138 words
THE METHOD OF FORMING A PERMANENTLY NON-SPHERICAL BALLOON WHICH INCLUDES FITTING THE NECK PORTION OF A PARTIALLY CROSSLINKED OLEFIN POLYMER HOLLOW BALLON PREFORM ON AN INFLATER PIPE, SUSPENDING THE PREFROM BY THE PIPE WITHIN A PERMEABLE WALL INTERNAL MOLD HAVING THE APPROXIMATE SIZE AND SHAPE OF THE INTENDED BALLON, HEATING THE PREFROM TO ABOVE THE CRYSTALLINE TRANSITION TEMPERATURE OF THE POLYMER, INFLATING THE PREFORM WITH A GAS AT MODERATE PRESSURE AND SIMULTANEOUSLY RAISING THE PREFORM WITHIN THE MOLD, THEREBY TO PREVENT ANY BUT YHE POLE PORTION OF THE EXPANDING PREFORM FROM TOUCHING THE MOLD UNTIL THE PREFORM HAS EXPANDED APPROXIMATELY TO ITS FINAL SIZE, CONTINUING THE EXPANSION UNTIL ALL AREAS SAVE THE NECK EXTREMITY ARE IN CONTACT WITH THE MOLD, COOLING THE BALLOON WHILE MAINTAINING THE FINAL INFLATION PRESSURE, DEFLATING THE BALLOON AND REMOVING IT FROM THE MOLD.
References Cited (Backward Citations)
US2994108A
Cited
US3106441A
Cited
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 |