US4976812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line consolidation of braided structures
Assignee: Fiberite Inc
•
Filing: 1989-12-04
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Granted: 1990-12-11
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Expires: 2009-12-04
Abstract
Abstract A braided insitu consolidated structure of fiber reinforced thermoplastic resin strands is formed by braiding the strands on a mandrel and then advancing the mandrel and the braided structure as it is formed continuously through a heating zone to heat the resin to a flowable condition then cooling the structure as it leaves the zone. Pressure may be applied or developed against the braided structure during its formation.
Inventors
- 👤 Ronald F. McConnell
- 👤 Peter Popper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:35
CPC Classifications
D; D04; D04C; D04C3/00; D04C3/48; B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/68; B29C53/80; B29C53/8008; B29C53/8016; B29C53/84; B29C53/845; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/52; B29C70/521; B29C70/522; D04C1/00; D04C1/06; D10; D10B; D10B2401/00; D10B2401/04; D10B2401/041; D10B2403/00; D10B2403/02; D10B2403/024; D10B2403/0241; D10B2403/02411; D10B2505/00; D10B2505/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
A method of building and consolidating a composite structure from melt impregnated fiber reinforced thermoplastic resin strands comprising: advancing said strands toward a mandrel;; converging said strands under tension in a braiding pattern around a location on said mandrel to form a braided composite structure thereon; heating said strands to a temperature which will cause the thermoplastic resin to soften and flow prior to their contacting the mandrel for braiding around said location; advancing said braided structure while continuing to heat said structure to cause continuing softening and flow as the structure advances, said temperature being below the degradation temperature of the resin; and cooling said structure.
Claim 2
Independent Claim
107 words
A method of building and consolidating a composite structure from melt impregnated fiber reinforced thermoplastic resin strands comprising: advancing said strands toward a mandrel;; converging said strands under tension in a braiding pattern around a location on said mandrel to form a braided composite structure thereon; heating said strands to a temperature which will cause the thermoplastic resin to soften and flow prior to their contacting the mandrel for braiding around said location; advancing said braided structure while continuing to heat said structure to cause continuing softening and flow as the structure advances, said temperature being below the degradation temperature of the resin; and cooling said structure.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said structure is heated in an inert atmosphere.
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |