US3337666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of blow molding oriented containers
Assignee: Phillips Petroleum Co
•
Filing: 1965-01-04
•
Granted: 1967-08-22
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Paul E Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/02; B29C49/06; B29C49/48; B29C49/50; B29C2049/023; Y; Y10; Y10S; Y10S425/00; Y10S425/806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE METHOD FOR FORMING AN ORIENTED PLASTIC CONTAINER WHICH COMPRISES: INJECTING MOLTEN THERMOPLASTIC MATERIAL ABOUT A MANDREL IN AN INJECTION MOLD ZONE TO FORM A PARISON OF UNIFORM WALL THICKNESS HAVING A CONFIGURATION SUBSTANTIALLY THE SAME AS BUT SMALLER IN SIZE THAN THAT OF THE CONTAINER; REMOVING SAID PARISON AND MANDREL FROM SAID INJECTION ZONE AND ENCLOSING SAME IN A BLOW MOLD ZONE; EXPANDING SAID PARISON FROM SAID MANDREL IN SAID BLOW MOLD ZONE TO FORM AN ORIENTED CONTAINER, THE ENTIRE CONTAINER BEING FORMED BY THE EXPANSION, WITH A RESULTANT ORIENTED FILM BEING FORMED AROUND SAID MANDREL AND ACROSS THE NORMAL OPENING OF SAID CONTAINER BY SAID EXPANSION; AND HEATING SAID RESULTING FILM ALONG A LINE AROUND THE NORMAL OPENING OF SAID CONTAINER TO THEREBY CAUSE SAID FILM TO SEPARATE FROM THE CONTAINER OPENING.
Claim 2
Independent Claim
134 words
THE METHOD FOR FORMING AN ORIENTED PLASTIC CONTAINER WHICH COMPRISES: INJECTING MOLTEN THERMOPLASTIC MATERIAL ABOUT A MANDREL IN AN INJECTION MOLD ZONE TO FORM A PARISON OF UNIFORM WALL THICKNESS HAVING A CONFIGURATION SUBSTANTIALLY THE SAME AS BUT SMALLER IN SIZE THAN THAT OF THE CONTAINER; REMOVING SAID PARISON AND MANDREL FROM SAID INJECTION ZONE AND ENCLOSING SAME IN A BLOW MOLD ZONE; EXPANDING SAID PARISON FROM SAID MANDREL IN SAID BLOW MOLD ZONE TO FORM AN ORIENTED CONTAINER, THE ENTIRE CONTAINER BEING FORMED BY THE EXPANSION, WITH A RESULTANT ORIENTED FILM BEING FORMED AROUND SAID MANDREL AND ACROSS THE NORMAL OPENING OF SAID CONTAINER BY SAID EXPANSION; AND HEATING SAID RESULTING FILM ALONG A LINE AROUND THE NORMAL OPENING OF SAID CONTAINER TO THEREBY CAUSE SAID FILM TO SEPARATE FROM THE CONTAINER OPENING.
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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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |