US3271489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming hollow plastic articles
Assignee: Ball Corp
•
Filing: 1963-03-25
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Granted: 1966-09-06
•
Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Clement V Fogelberg
- 👤 Peter W Dart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/76; B29C49/761
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A METHOD FOR FORMING HOLLOW PLASTIC ARTICLES BY THE BLOW MOLDING PROCESS WHEREIN A PORTION OF EACH ARTICLE IS PRESS-FORMED SUBSTANTIALLY FREE FROM FLASH IN A MULTISECTIONED MOLD, THE STEPS OF EXERTING PRESSURE AGAINST PORTIONS OF THE INNER WALL OF THE OPEN END PORTION OF A PARISON TO DISTORT SAID OPEN END PORTION SUBSTANTIALLY INDEPENDENTLY OF WALL THICKNESS VARIATIONS, SAID INNER WALL PORTIONS BEING ANGULARLY DISPLACED FROM ABUTMENT POINTS
Claim 2
Dependent Claim
70 words
IN A METHOD FOR FORMING HOLLOW PLASTIC ARTICLES BY THE BLOW MOLDING PROCESS WHEREIN A PORTION OF EACH ARTICLE IS PRESS-FORMED SUBSTANTIALLY FREE FROM FLASH IN A MULTISECTIONED MOLD, THE STEPS OF EXERTING PRESSURE AGAINST PORTIONS OF THE INNER WALL OF THE OPEN END PORTION OF A PARISON TO DISTORT SAID OPEN END PORTION SUBSTANTIALLY INDEPENDENTLY OF WALL THICKNESS VARIATIONS, SAID INNER WALL PORTIONS BEING ANGULARLY DISPLACED FROM ABUTMENT POINTS
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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 |