US3170010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding pre-expanded plastic beads
Assignee: Primerica Inc
•
Filing: 1961-12-28
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Granted: 1965-02-16
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Schultz Robert Stephen
- 👤 Polka Eugen Franz
- 👤 Cherney Jerome Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:16
CPC Classifications
B; B29; B29C; B29C33/00; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C33/02; B29C33/04; B29C44/3415; B29C44/3426; B29L; B29L2031/00; B29L2031/712; B29L2031/7132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF PRODUCING CELLULAR THERMOPLASTIC ARTICLES FROM PRE-EXPANDED PLASTIC BEADS, WHICH COMPRISES ARRANGING A PAIR OF MULTI-PASSAGED MALE AND FEMALE MOLD MEMBERS IN CONCENTRICALLY SPACED RELATION TO DEFINE THEREBETWEEN A MOLD CAVITY COMMUNICATING WITH A FLUID ADMISSION PASSAGE AND ESSENTIALLY SURROUNDED BY CONCENTRICALLY SPACED FIRST AND SECOND FLUID ADMISSION CHAMBERS ISOLATED FROM SAID MOLD CAVITY, FEEDING A QUANTITY OF BEADS INTO SAID CAVITY, INTRODUCING A FIRST HEATED FLUID INTO SAID FIRST AND SECOND CHAMBERS, AND WHILE SAID FIRST FLUID IS IN SAID CHAMBERS IN HEAT EXCHANGE RELATION WITH SAID
Claim 2
Independent Claim
90 words
A METHOD OF PRODUCING CELLULAR THERMOPLASTIC ARTICLES FROM PRE-EXPANDED PLASTIC BEADS, WHICH COMPRISES ARRANGING A PAIR OF MULTI-PASSAGED MALE AND FEMALE MOLD MEMBERS IN CONCENTRICALLY SPACED RELATION TO DEFINE THEREBETWEEN A MOLD CAVITY COMMUNICATING WITH A FLUID ADMISSION PASSAGE AND ESSENTIALLY SURROUNDED BY CONCENTRICALLY SPACED FIRST AND SECOND FLUID ADMISSION CHAMBERS ISOLATED FROM SAID MOLD CAVITY, FEEDING A QUANTITY OF BEADS INTO SAID CAVITY, INTRODUCING A FIRST HEATED FLUID INTO SAID FIRST AND SECOND CHAMBERS, AND WHILE SAID FIRST FLUID IS IN SAID CHAMBERS IN HEAT EXCHANGE RELATION WITH SAID
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |