US4470862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of fiber reinforced articles
Assignee: RTX Corp
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Filing: 1982-05-27
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Granted: 1984-09-11
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Expires: 2002-05-27
Abstract
Abstract In a method for manufacturing a fiber reinforced article, a plurality of sheets of fibrous material (38 and 40) each having minute quantities of a thermoplastic adhesive (50) on a single surface thereof are laid up on a suitable form such that the adhesive of each sheet is disposed in contact with an adjacent preceding sheet or form. The sheets are tailored to the form and adhesively bonded to one another by activation of the adhesive with heat and pressure.
Inventors
- 👤 Edwin R. More
- 👤 Harry A. Nutter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:15
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B32B5/22; B32B5/24; B32B5/28; B32B7/00; B32B7/04; B32B7/12; B64; B64C; B64C11/00; B64C11/16; B64C11/20; B64C11/26; B29L; B29L2031/00; B29L2031/08; B29L2031/087; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2315/00; B32B2315/08; B32B2315/085; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332; Y10T29/49336; Y10T29/49337
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
A method for manufacturing a fiber reinforced article, said method comprising the steps of providing a subassembly form of the desired shape of said fiber reinforced article, enveloping said subassembly form with fibrous reinforcing material, impregnating said fibrous material with a curable adhesive and molding said impregnated fibrous material into an outer skin of said fiber reinforced article in conformance with the shape of said subassembly form, said method, prior to the molding of said fibrous material into said skin, being characterized by the steps of providing said fibrous material in a plurality of sheets, each being unimpregnated with any binder and having a minute quantity of thermoplastic adhesive deposited on a single surface thereof; and laying up said fibrous material sheets, one over another on said subassembly while bonding a first of said sheets to said subassembly form and each subsequent sheet to a preceding adjacent sheet by heat and pressure.
Claim 2
Independent Claim
152 words
A method for manufacturing a fiber reinforced article, said method comprising the steps of providing a subassembly form of the desired shape of said fiber reinforced article, enveloping said subassembly form with fibrous reinforcing material, impregnating said fibrous material with a curable adhesive and molding said impregnated fibrous material into an outer skin of said fiber reinforced article in conformance with the shape of said subassembly form, said method, prior to the molding of said fibrous material into said skin, being characterized by the steps of providing said fibrous material in a plurality of sheets, each being unimpregnated with any binder and having a minute quantity of thermoplastic adhesive deposited on a single surface thereof; and laying up said fibrous material sheets, one over another on said subassembly while bonding a first of said sheets to said subassembly form and each subsequent sheet to a preceding adjacent sheet by heat and pressure.
Claim 3
Dependent Claim
20 words
The method of claim 1 characterized by said heat and pressure being applied at discrete locations on said fibrous material.
Claim 4
Dependent Claim
22 words
The method of claim 1 characterized by said heat and pressure being applied to said fibrous material over a broad expanse thereof.
Claim 5
Dependent Claim
31 words
The method of claim 1 characterized by said fibrous material sheets being laid up such that the thermoplastic adhesive on each sheet is disposed in contact with a preceding adjacent sheet.
Claim 6
Dependent Claim
33 words
The method of claim 1 characterized by said bonding of each sheet to said preceding adjacent sheet being manually effected by means of an iron maintained at the softening temperature of said adhesive.
Claim 7
Dependent Claim
30 words
The method of claim 1 characterized by the deposition of said adhesive being in the range of approximately 0.5 to approximately 5.0 grams of adhesive per square yard of material.
Claim 8
Dependent Claim
16 words
The method of claim 1 characterized by said fibrous sheet material comprising a woven fiberglass cloth.
Claim 9
Dependent Claim
15 words
The method of claim 1 characterized by said thermoplastic adhesive comprising a synthetic polymeric material.
Claim 10
Dependent Claim
15 words
The method of claim 8 characterized by said synthetic polymeric material comprising a nylon-12 copolymer.
References Cited (Backward Citations)
US2630868A
Cited
US2890147A
Cited
US3140846A
Cited
US2929755A
Cited
US3150024A
Cited
US3321019A
Cited
US3525662A
Cited
US3713753A
Cited
US3682738A
Cited
US3873654A
Cited
US3967996A
Cited
US4051289A
Cited
US4168197A
Cited
US4359357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |