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Patent US3278666A successfully refreshed from Google Patents.
US3278666A
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Method of forming a blow molded object
Assignee: Dow Chemical Co
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Filing: 1963-07-17
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Granted: 1966-10-11
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Harold J Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/482; B29C37/00; B29C37/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF MAKING A BLOW MOLDED BOTTLE HAVING A REDUCED DIAMETER NECK PORTION INCLUDING THE STEPS OF EXTRUDING A PARISON, SURROUNDING THE PARISON WITH A MOLD HAVING CAVITY SPACES CAPABLE OF PRODUCING CORRUGATED TRIM SCRAP PORTIONS CAPABLE OF RELEAVING STRESSES DUE TO CONTRACTION OF THE BOTTLE DURING COOLING, GENERATING A PRESSURE DIFFERENTIAL OF THE EXTRUDED PARISON TO SHAPE THE BOTTLE, AND COOLING THE BOTTLE.
Claim 2
Independent Claim
65 words
A METHOD OF MAKING A BLOW MOLDED BOTTLE HAVING A REDUCED DIAMETER NECK PORTION INCLUDING THE STEPS OF EXTRUDING A PARISON, SURROUNDING THE PARISON WITH A MOLD HAVING CAVITY SPACES CAPABLE OF PRODUCING CORRUGATED TRIM SCRAP PORTIONS CAPABLE OF RELEAVING STRESSES DUE TO CONTRACTION OF THE BOTTLE DURING COOLING, GENERATING A PRESSURE DIFFERENTIAL OF THE EXTRUDED PARISON TO SHAPE THE BOTTLE, AND COOLING THE BOTTLE.
References Cited (Backward Citations)
GB752637A
Cited
US3082484A
Cited
US3007594A
Cited
US3120679A
Cited
US3043461A
Cited
US3080614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |