Patent US4219980A successfully refreshed from Google Patents.
US4219980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced composite structure and method of fabrication thereof
Assignee: Boeing North American Inc
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Filing: 1978-08-21
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Granted: 1980-09-02
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Expires: 1998-08-21
Abstract
Abstract A composite structure is reinforced and assembled utilizing barbed quill fasteners. By using such fasteners, the structure can be formed while in a staged condition. This allows co-curing and bonding of the elements of the structure in a joined condition. Additionally, by virtue of the use of the barbed quills and their being strategically implanted in the structure, peel forces in the structural joint are minimized.
Inventors
- 👤 Morris S. Loyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:14
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/56; B29C65/561; B29C65/562; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/40; B29C66/41; B29C66/43; B29C66/434; B29C66/4344; B29C66/43441; B29C66/70; B29C66/72; B29C66/721; B29C70/00; B29C70/68; B29C70/86; B29C70/865; B29D; B29D99/00; B29D99/0003; B29D99/0005; B29D99/001; B29D99/0014; F; F16; F16B; F16B11/00; F16B11/006; F16B15/00; F16B15/06; F16B5/00; B29C66/71; B29C66/7212; B29C66/7214; B29C66/72141; B29L; B29L2031/00; B29L2031/712; B29L2031/7172; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/471; Y10T428/00; Y10T428/24; Y10T428/24008
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
125 words
A reinforced composite structure comprising: a staged composite panel, said panel having a plurality of fiber composite plies, said plies being adhesively bonded together; a staged composite web, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion positioned parallel to said panel, a second portion positioned transversely to said panel, and a fillet portion between said first and second portions; and a plurality of quills infixed in said web and said panel, said quills having barbs thereon, said barbs engaging the fibers of said panel and said web, said quills joining said fillet portion to said panel whereby said panel and said web can be co-cured as assembled.
Claim 2
Dependent Claim
125 words
A reinforced composite structure comprising: a staged composite panel, said panel having a plurality of fiber composite plies, said plies being adhesively bonded together; a staged composite web, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion positioned parallel to said panel, a second portion positioned transversely to said panel, and a fillet portion between said first and second portions; and a plurality of quills infixed in said web and said panel, said quills having barbs thereon, said barbs engaging the fibers of said panel and said web, said quills joining said fillet portion to said panel whereby said panel and said web can be co-cured as assembled.
Claim 3
Dependent Claim
52 words
The reinforced composite structure of claim 1 wherein said quills have a head and a rod, said barbs are provided on said rod, said rod is positioned approximately perpendicular to said head, said rod having a pointed distal end, and said quills are positioned such that the structure is reinforced when cured.
Claim 4
Dependent Claim
24 words
The reinforced composite structure of claim 1 wherein said quills are positioned adjacent to the interface between said first portion and said fillet portion.
Claim 5
Dependent Claim
24 words
The reinforced composite structure of claim 2 wherein said quills are positioned adjacent to the interface between said first portion and said fillet portion.
Claim 6
Dependent Claim
26 words
The reinforced composite structure of claim 4 wherein said quills are metallic and said rod has at least a portion thereof tapered to said distal end.
Claim 7
Dependent Claim
156 words
The reinforced composite structure of claim 3 also including a composite reinforcement member, said member comprising a generally wedge-shaped laminate, said laminate being defined by a shank and a base, said shank adjoining said base, said shank having two longitudinal sides, said base extending arcuately outward from said shank, said base being tapered in thickness as it extends from said shank, said laminate having a plurality of fiber composite sheets of uniform size and shape, said sheets of said laminate being adhesively bonded together, said sheets of said laminate being arranged such that the fibers thereof substantially distribute a tension load on said base as a shear load along said longitudinal sides of said shank, said reinforcement member being bonded to said web and said panel, said base adjoining said panel and said fillet portion of said web, and said shank adjoining said second portion of said web, said quills being infixed in said reinforcement member.
Claim 8
Dependent Claim
156 words
The reinforced composite structure of claim 4 also including a composite reinforcement member, said member comprising a generally wedge-shaped laminate, said laminate being defined by a shank and a base, said shank adjoining said base, said shank having two longitudinal sides, said base extending arcuately outward from said shank, said base being tapered in thickness as it extends from said shank, said laminate having a plurality of fiber composite sheets of uniform size and shape, said sheets of said laminate being adhesively bonded together, said sheets of said laminate being arranged such that the fibers thereof substantially distribute a tension load on said base as a shear load along said longitudinal sides of said shank, said reinforcement member being bonded to said web and said panel, said base adjoining said panel and said fillet portion of said web, and said shank adjoining said second portion of said web, said quills being infixed in said reinforcement member.
Claim 9
Dependent Claim
235 words
A reinforced composite structure comprising: a composite panel, said panel having a plurality of fiber composite plies, said plies being bonded together; a composite web, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion positioned parallel to said panel, said first portion being bonded to said panel, a second portion positioned transversely to said panel, and a fillet portion between said first and second portion; a composite reinforcement member, said member comprising a generally wedge-shaped laminate, said laminate being defined by a shank and a base, said shank adjoining said base, said shank having two longitudinal sides, said base extending arcuately outward from said shank, said base being tapered in thickness as it extends from said shank, said laminate having a plurality of fiber composite sheets of uniform size and shape, said sheets of said laminate being adhesively bonded together, said sheets of said laminate being arranged such that the fibers thereof substantially distribute a tension load on said base as a shear load along said longitudinal sides of said shank, said reinforcement member being bonded to said web and said panel, said base adjoining said panel and said fillet portion of said web, said shank adjoining said second portion of said web; and a plurality of quills infixed in said panel, said reinforcement member, and said web.
Claim 10
Dependent Claim
235 words
A reinforced composite structure comprising: a composite panel, said panel having a plurality of fiber composite plies, said plies being bonded together; a composite web, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion positioned parallel to said panel, said first portion being bonded to said panel, a second portion positioned transversely to said panel, and a fillet portion between said first and second portion; a composite reinforcement member, said member comprising a generally wedge-shaped laminate, said laminate being defined by a shank and a base, said shank adjoining said base, said shank having two longitudinal sides, said base extending arcuately outward from said shank, said base being tapered in thickness as it extends from said shank, said laminate having a plurality of fiber composite sheets of uniform size and shape, said sheets of said laminate being adhesively bonded together, said sheets of said laminate being arranged such that the fibers thereof substantially distribute a tension load on said base as a shear load along said longitudinal sides of said shank, said reinforcement member being bonded to said web and said panel, said base adjoining said panel and said fillet portion of said web, said shank adjoining said second portion of said web; and a plurality of quills infixed in said panel, said reinforcement member, and said web.
Claim 11
Dependent Claim
48 words
The reinforced composite structure of claim 8 wherein said quills have a head and a rod, said barbs are provided on said rod, said rod is positioned approximately perpendicular to said head, said rod having a pointed distal end, and said quills are positioned to reinforce the structure.
Claim 12
Dependent Claim
24 words
The reinforced composite structure of claim 8 wherein said quills are positioned adjacent to the interface between said first portion and said fillet portion.
Claim 13
Dependent Claim
24 words
The reinforced composite structure of claim 9 wherein said quills are positioned adjacent to the interface between said first portion and said fillet portion.
Claim 14
Dependent Claim
26 words
The reinforced composite structure of claim 9 wherein said quills are metallic, and said shank has at least a portion thereof tapered to said distal end.
Claim 15
Independent Claim
158 words
A method of forming a composite structure which comprises: providing a composite panel and a composite web, said panel having a plurality of fiber composite plies, said plies being bonded together, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion and a second portion which are divided by a fillet portion; staging said panel and said web; positioning said panel relative to said web such that said first portion is positioned parallel to said panel and said second portion is positioned transversely to said panel; infixing a plurality of quills in said web and said panel while said web and said panel are in a staged condition such that said web is joined to said panel, said quills having barbs thereon, said barbs engaging the fibers of said panel and said web; and co-curing said web and said panel as joined.
Claim 16
Independent Claim
158 words
A method of forming a composite structure which comprises: providing a composite panel and a composite web, said panel having a plurality of fiber composite plies, said plies being bonded together, said web having at least one sheet of fiber composite material, said sheet having at least one layer, said sheet having three portions, a first portion and a second portion which are divided by a fillet portion; staging said panel and said web; positioning said panel relative to said web such that said first portion is positioned parallel to said panel and said second portion is positioned transversely to said panel; infixing a plurality of quills in said web and said panel while said web and said panel are in a staged condition such that said web is joined to said panel, said quills having barbs thereon, said barbs engaging the fibers of said panel and said web; and co-curing said web and said panel as joined.
Claim 17
Dependent Claim
24 words
The method of claim 13 wherein said infixing of said quills is such that said quills are positioned to reinforce said structure when cured.
Claim 18
Dependent Claim
22 words
The method of claim 14 wherein said quills are positioned adjacent to the interface between said first portion and said fillet portion.
Claim 19
Dependent Claim
38 words
The method of claim 15 wherein said quills have a head and a rod, said bars are provided on said rod, said rod is positioned approximately perpendicular to said head, and said rod has a pointed distal end.
Claim 20
Dependent Claim
24 words
The method of claim 16 wherein said quills are metallic and said rod has at least a portion thereof tapered to said distal end.
References Cited (Backward Citations)
US1385387A
Cited
FR545908A
Cited
US1999409A
Cited
US2245497A
Cited
US2655459A
Cited
US3184353A
Cited
US3353317A
Cited
US3570074A
Cited
DE1924863A1
Cited
US3837985A
Cited
US3871149A
Cited
US4010300A
Cited
US4109435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |