Patent US3306967A successfully refreshed from Google Patents.
US3306967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding of resinous foams
Assignee: Scholl Manufacturing Co Inc
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Filing: 1963-08-12
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Granted: 1967-02-28
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Turkewitsch William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:13
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5618; B29C44/02; B29C44/10; B29L; B29L2009/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF PRODUCING MOLDED ARTICLES HAVING A FOAMED RESINOUS SKELETON WHICH COMPRISES PROVIDING A FLEXIBLE RESINOUS FOAM IN WHICH THE CELL WALLS OF THE FOAM CONTAIN DEPOSITS OF A THERMOPLASTIC RESINOUS COMPOSITION IN AN AMOUNT INSUFFICIENT TO CLOSE OFF THE CELLS OF SAID FOAM, SAID COMPOSITION HAVING A SOFTENING POINT BELOW THE SOFTENING POINT OF THE FOAM SKELETON, HEATING SAID FOAM TO A TEMPERATURE SUFFICIENT TO SOFTEN THE DEPOSITS OF SAID RESINOUS COMPOSITION, APPLYING A SHAPING PRESSURE TO SELECTED AREAS OF SAID FOAM WHILE SAID DEPOSITS ARE SOFETENED TO THEREBY DEFORM THE SELECTED AREAS FO THE FOAM INTO A DESIRED CONFIGURATION WITHOUT DESTROYING THE CELLULAR CHARACTER OF THE FOAM, SAID SHAPING PRESSURE REDUCING THE THICKNESS OF THE SHAPED AREAS TO NOT LES THAN 25% OF THEIR ORIGINAL THICKNESS, AND COOLING THE SHAPED FOAM WHILE STILL UNDER SAID PRESSURE TO THEREBY PROVIDE A STRUCTURE IN WHICH THE SELECTED AREAS OF THE DEFORMED FOAM ARE MAINTAINED IN THEIR DEFORMED CONDITION BY THE SOLIDIFICATION OF SAID DEPOSITS.
Claim 2
Independent Claim
165 words
THE METHOD OF PRODUCING MOLDED ARTICLES HAVING A FOAMED RESINOUS SKELETON WHICH COMPRISES PROVIDING A FLEXIBLE RESINOUS FOAM IN WHICH THE CELL WALLS OF THE FOAM CONTAIN DEPOSITS OF A THERMOPLASTIC RESINOUS COMPOSITION IN AN AMOUNT INSUFFICIENT TO CLOSE OFF THE CELLS OF SAID FOAM, SAID COMPOSITION HAVING A SOFTENING POINT BELOW THE SOFTENING POINT OF THE FOAM SKELETON, HEATING SAID FOAM TO A TEMPERATURE SUFFICIENT TO SOFTEN THE DEPOSITS OF SAID RESINOUS COMPOSITION, APPLYING A SHAPING PRESSURE TO SELECTED AREAS OF SAID FOAM WHILE SAID DEPOSITS ARE SOFETENED TO THEREBY DEFORM THE SELECTED AREAS FO THE FOAM INTO A DESIRED CONFIGURATION WITHOUT DESTROYING THE CELLULAR CHARACTER OF THE FOAM, SAID SHAPING PRESSURE REDUCING THE THICKNESS OF THE SHAPED AREAS TO NOT LES THAN 25% OF THEIR ORIGINAL THICKNESS, AND COOLING THE SHAPED FOAM WHILE STILL UNDER SAID PRESSURE TO THEREBY PROVIDE A STRUCTURE IN WHICH THE SELECTED AREAS OF THE DEFORMED FOAM ARE MAINTAINED IN THEIR DEFORMED CONDITION BY THE SOLIDIFICATION OF SAID DEPOSITS.
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |