US3331908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding machines
Assignee: Monsanto Co
•
Filing: 1963-12-26
•
Granted: 1967-07-18
•
Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard K Shelby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:29
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/421; B29C51/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
THE METHOD OF FORMING PLASTIC ARTICLES FROM A WEB OF THERMOPLASTIC MATERIAL, SAID METHOD COMPRISING THE PASSING OF SAID WEB OF MATERIAL INTO A MOLDING MACHINE, MOVING SAID WEB PAST A PLURALITY OF SPACED HEATERS FOR HEATING THE PORTIONS OF THE WEB WHICH ARE NEXT PASSED BETWEEN DIE FRAMES FOR MOLDING THEREOF TO A PRESET TEMPERATURE, MOVING THE HEATERS WITH THE WEB AND AT THE SAME RATE OF SPEED FOR A PRESELECETED DISTANCE, PASSING THE WEB BETWEEN A PAIR OF COOPERATING DIE FRAMES HAVING CO/ OPERATING DIE ELEMENTS, THE NUMBER OF COOPERATING DIE ELEMENTS BEING SUBSTANTIAL EQUAL TO THE NUMBER OF HEATERS, LOCATING THE DIE ELEMENTS IN A PATTERN WHICH IS SUBSTANTIALLY IDENTICAL TO THE ARRANGEMENT OF THE HEATERS, ENGAGING SAID DIE FRAMES AND MOLDING ARTICLES FROM THE PORTIONS OF THE WEB WHICH HAVE BEEN DIRECTLY PREHEATED BY SAID HEATERS, DISENGAGING SAID DIE FRAMES, AND PASSING THE WEB CONTAINING THE MOLDED ARTICLES OUT OF THE MACHINE.
Claim 2
Independent Claim
156 words
THE METHOD OF FORMING PLASTIC ARTICLES FROM A WEB OF THERMOPLASTIC MATERIAL, SAID METHOD COMPRISING THE PASSING OF SAID WEB OF MATERIAL INTO A MOLDING MACHINE, MOVING SAID WEB PAST A PLURALITY OF SPACED HEATERS FOR HEATING THE PORTIONS OF THE WEB WHICH ARE NEXT PASSED BETWEEN DIE FRAMES FOR MOLDING THEREOF TO A PRESET TEMPERATURE, MOVING THE HEATERS WITH THE WEB AND AT THE SAME RATE OF SPEED FOR A PRESELECETED DISTANCE, PASSING THE WEB BETWEEN A PAIR OF COOPERATING DIE FRAMES HAVING CO/ OPERATING DIE ELEMENTS, THE NUMBER OF COOPERATING DIE ELEMENTS BEING SUBSTANTIAL EQUAL TO THE NUMBER OF HEATERS, LOCATING THE DIE ELEMENTS IN A PATTERN WHICH IS SUBSTANTIALLY IDENTICAL TO THE ARRANGEMENT OF THE HEATERS, ENGAGING SAID DIE FRAMES AND MOLDING ARTICLES FROM THE PORTIONS OF THE WEB WHICH HAVE BEEN DIRECTLY PREHEATED BY SAID HEATERS, DISENGAGING SAID DIE FRAMES, AND PASSING THE WEB CONTAINING THE MOLDED ARTICLES OUT OF THE MACHINE.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |