US3286004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a foam plastic article
Assignee: General Electric Co
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Filing: 1964-04-30
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Granted: 1966-11-15
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 George S Hill
- 👤 Kenneth R Davis
- 👤 Robert O Shuck
- 👤 Kevork A Torossian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:55
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/86; B29C70/865; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/145; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C41/00; B29C41/02; B29C41/08; B29K; B29K2027/00; B29K2027/06; B29K2075/00; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF MANUFACTURING AN ARTICLE COMPRISING A FIBER-REINFORCED PLASTIC SHELL AND A RESIN FOAM CORE, WHICH METHOD COMPRISES: APPLYING TO A MOLD SURFACE ADAPTED TO FORM A MOLD CAVITY WITH A SPRAYED-ON COATING COMPRISING REINFORCING FIBERS AND A THERMOSETTING RESIN BINDER TO FORM AN UNCOMPACTED MAT OF FIBERS AND BINDER, PRIOR TO CURING OF SAID BINDER, SPRAYING ONTO THE EXPOSED SURFACE OF SAID MAT A FLEXIBLE FILM OF WEBBING LACQUER, BRINGING SAID MOLD MEMBERS TOGETHER TO FORM A CLOSED MOLD CAVITY, INTRODUCING INTO SAID CAVITY A FOAM FORMING RESIN MIXTURE ADAPTED DURING EXPANSION THEREOF TO FORM A RESIN FOAM CORE TO EXERT A PRESSURE ON SAID FILM THEREBY COMPACTING SAID MAT, SAID FILM PREVENTING PENETRATION OF SAID FOAMABLE RESIN INTO SAID MAT DURING FOAMING THEREOF, AND FINALY REMOVING THE ARTICLE SO FORMED FROM THE MOLD CAVITY.
Claim 2
Independent Claim
137 words
THE METHOD OF MANUFACTURING AN ARTICLE COMPRISING A FIBER-REINFORCED PLASTIC SHELL AND A RESIN FOAM CORE, WHICH METHOD COMPRISES: APPLYING TO A MOLD SURFACE ADAPTED TO FORM A MOLD CAVITY WITH A SPRAYED-ON COATING COMPRISING REINFORCING FIBERS AND A THERMOSETTING RESIN BINDER TO FORM AN UNCOMPACTED MAT OF FIBERS AND BINDER, PRIOR TO CURING OF SAID BINDER, SPRAYING ONTO THE EXPOSED SURFACE OF SAID MAT A FLEXIBLE FILM OF WEBBING LACQUER, BRINGING SAID MOLD MEMBERS TOGETHER TO FORM A CLOSED MOLD CAVITY, INTRODUCING INTO SAID CAVITY A FOAM FORMING RESIN MIXTURE ADAPTED DURING EXPANSION THEREOF TO FORM A RESIN FOAM CORE TO EXERT A PRESSURE ON SAID FILM THEREBY COMPACTING SAID MAT, SAID FILM PREVENTING PENETRATION OF SAID FOAMABLE RESIN INTO SAID MAT DURING FOAMING THEREOF, AND FINALY REMOVING THE ARTICLE SO FORMED FROM THE MOLD CAVITY.
References Cited (Backward Citations)
US1608727A
Cited
US2802766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |