US3137743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming foamed structures
Assignee: Tru-Scale Inc
•
Filing: 1960-11-03
•
Granted: 1964-06-16
•
Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 Perry H Pelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:14
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3415; B29C44/3426; B29C44/20; B29C44/206; B29C44/30; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10S; Y10S264/00; Y10S264/10; Y10S264/12; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF MAKING A FOAMED PLASTIC, STRUCTURE OF REDUCED MOISTURE PERMEABILITY FROM SEPARATE, DISCRETE AND AT LEAST PARTIALLY PREEXPANDED PLASTIC BEADS WHICH COMPRISES POSITIONING A QUANTITY OF SAID BEADS IN A CONFINED MOLDING SPACE, HEATING THE CONFINED BEADS AND EFFECTING EXPANSION AND COALESCENCE THEREOF INTO A FOAMED STRUCTURE BY CONDENSING STEAM IN CONTACT THEREWITH, REMOVING CONDENSED MOISTURE FROM SAID STRUCTURE AND THEREBY CAUSING THE OUTER BEADS TO MERGE TOGETHER INTO A HOMOGENEOUS OUTER SURFACE LAYER BY SIMULTANEOUSLY CONTACTING SAID OUTER SURFACE WITH A LAYER OF MOISTUREABSORBENT FABRIC, AND REMOVING THE RESULTING MOISTURELADEN FABRIC FROM CONTACT WITH SAID OUTER SURFACE AND DRYING IT FOR REUSE IN THE PROCESS.
Claim 2
Independent Claim
108 words
A METHOD OF MAKING A FOAMED PLASTIC, STRUCTURE OF REDUCED MOISTURE PERMEABILITY FROM SEPARATE, DISCRETE AND AT LEAST PARTIALLY PREEXPANDED PLASTIC BEADS WHICH COMPRISES POSITIONING A QUANTITY OF SAID BEADS IN A CONFINED MOLDING SPACE, HEATING THE CONFINED BEADS AND EFFECTING EXPANSION AND COALESCENCE THEREOF INTO A FOAMED STRUCTURE BY CONDENSING STEAM IN CONTACT THEREWITH, REMOVING CONDENSED MOISTURE FROM SAID STRUCTURE AND THEREBY CAUSING THE OUTER BEADS TO MERGE TOGETHER INTO A HOMOGENEOUS OUTER SURFACE LAYER BY SIMULTANEOUSLY CONTACTING SAID OUTER SURFACE WITH A LAYER OF MOISTUREABSORBENT FABRIC, AND REMOVING THE RESULTING MOISTURELADEN FABRIC FROM CONTACT WITH SAID OUTER SURFACE AND DRYING IT FOR REUSE IN THE PROCESS.
References Cited (Backward Citations)
US1487726A
Cited
US1453617A
Cited
US1455946A
Cited
US1650687A
Cited
US2075735A
Cited
US2096338A
Cited
US2141405A
Cited
US2260081A
Cited
US2377846A
Cited
US2441235A
Cited
US2376653A
Cited
US2590757A
Cited
US2779062A
Cited
US2673370A
Cited
US2774991A
Cited
US2872965A
Cited
US2841205A
Cited
US2977639A
Cited
US2962407A
Cited
US2874407A
Cited
FR1165798A
Cited
US3065500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |