US3424829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for blow molding hollow articles with integrally molded hollow handles
Assignee: Phillips Petroleum Co
•
Filing: 1965-05-04
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Granted: 1969-01-28
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Expires: 1985-05-04
Abstract
No abstract record available.
Inventors
- 👤 Donald L Peters
- 👤 Doyle L Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/4802; B29C49/02; B29C49/04; B29C49/482; B29C2049/4805; B29C2049/4807; B29C49/4812; B29L; B29L2031/00; B29L2031/46; B29L2031/463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR FORMING A FLAT BLOW MOLDED HOLLOW ARTICLE HAVING A HOLLOW CHANNEL INTEGRALLY MOLDED ON A FLAT SURFACE THEREOF, SAID METHOD COMPRISING CLOSING A PAIR OF MOLD HALVES TO PINCH OFF A HEATED PARISON, PREBLOWING SAID PARISON TO ROUGHLY CONFORM TO THE SHAPE OF SAID MOLDS, ONE OF WHICH CONTAINS A LONGITUDINAL RECESS PARALLEL TO A PLANE OF SEPARATION OF SAID MOLDS, MOVING A PAIR OF SLIDABLE INSERTS PERPENDICULAR TO THE LONGITUDINAL DIRECTION OF SAID RECESS TO PINCH OUT AN AREA WITHIN SAID PREBLOWN PARISON WHILE MAINTAINING SAID PARISON AT THE
Claim 2
Independent Claim
93 words
A METHOD FOR FORMING A FLAT BLOW MOLDED HOLLOW ARTICLE HAVING A HOLLOW CHANNEL INTEGRALLY MOLDED ON A FLAT SURFACE THEREOF, SAID METHOD COMPRISING CLOSING A PAIR OF MOLD HALVES TO PINCH OFF A HEATED PARISON, PREBLOWING SAID PARISON TO ROUGHLY CONFORM TO THE SHAPE OF SAID MOLDS, ONE OF WHICH CONTAINS A LONGITUDINAL RECESS PARALLEL TO A PLANE OF SEPARATION OF SAID MOLDS, MOVING A PAIR OF SLIDABLE INSERTS PERPENDICULAR TO THE LONGITUDINAL DIRECTION OF SAID RECESS TO PINCH OUT AN AREA WITHIN SAID PREBLOWN PARISON WHILE MAINTAINING SAID PARISON AT THE
References Cited (Backward Citations)
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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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |