US4568593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite corrugated panel with transverse fibers
Assignee: Enduro Systems Inc
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Filing: 1984-12-03
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Granted: 1986-02-04
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Expires: 2004-12-03
Abstract
Abstract A corrugated composite panel has improved strength and load carrying abilities. Two layers of transverse unidirectional filaments sandwich a layer of unidirectional filaments which are parallel with the corrugations. The layers are impregnated with resin. Also, one or more layers of chopped randomly oriented filaments are included.
Inventors
- 👤 Andrew Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:08
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/12; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/10; B29C70/16; B29C70/20; B29C70/205; B29C70/207; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B29L; B29L2007/00; B29L2007/002; B29L2016/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24132; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, said filaments being continuous fibers running parallel to the longitudinal axis of said panel and to the corrugations of said panel; upper and lower transverse layers sandwiching said center ply of longitudinal filaments, said transverse layers being comprised of unidirectional reinforcing filaments oriented substantially perpendicular to said longitudinal filaments; and wherein said center ply and upper and lower transverse layers are impregnated with resin to form a composite panel.
Claim 2
Dependent Claim
84 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, said filaments being continuous fibers running parallel to the longitudinal axis of said panel and to the corrugations of said panel; upper and lower transverse layers sandwiching said center ply of longitudinal filaments, said transverse layers being comprised of unidirectional reinforcing filaments oriented substantially perpendicular to said longitudinal filaments; and wherein said center ply and upper and lower transverse layers are impregnated with resin to form a composite panel.
Claim 3
Dependent Claim
29 words
The panel according to claim 1 further including a layer of veil material located on outer side of one of the transverse layers and also impregnated with the resin.
Claim 4
Dependent Claim
31 words
The panel according to claim 1 further including two layers of veil material, each located on an outer side of one of the transverse layers and also impregnated with the resin.
Claim 5
Dependent Claim
87 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, the filaments being continuous and running parallel to the longitudinal axis of the panel and to the corrugations of the panel; upper and lower transverse layers sandwiching the center ply of longitudinal filaments, the transverse being comprised of reinforcing filaments oriented transverse to the longitudinal filaments; and at least one chopped layer of chopped, randomly oriented filaments; the center ply and the layers being impregnated with resin to form a composite panel.
Claim 6
Dependent Claim
87 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, the filaments being continuous and running parallel to the longitudinal axis of the panel and to the corrugations of the panel; upper and lower transverse layers sandwiching the center ply of longitudinal filaments, the transverse being comprised of reinforcing filaments oriented transverse to the longitudinal filaments; and at least one chopped layer of chopped, randomly oriented filaments; the center ply and the layers being impregnated with resin to form a composite panel.
Claim 7
Dependent Claim
31 words
The panel according to claim 4 wherein the chopped layer is located on an outer side of one of the transverse layers for increasing the resin content on the outer side.
Claim 8
Dependent Claim
26 words
The panel according to claim 4 wherein the weight of the chopped layer is about 3 to 9 percent of the total weight of the panel.
Claim 9
Dependent Claim
29 words
The panel according to claim 4 further including a layer of veil material located on outer side of one of the transverse layers and also impregnated with the resin.
Claim 10
Dependent Claim
31 words
The panel according to claim 4 further including two layers of veil material, each located on an outer side of one of the transverse layers and also impregnated with the resin.
Claim 11
Dependent Claim
81 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, the filaments being continuous and running parallel to the corrugations of the panel; upper and lower transverse layers sandwiching the center ply of longitudinal filaments, the transverse layers being comprised of unidirectional reinforcing filaments oriented substantially perpendicular to the longitudinal filaments; at least one chopped layer of chopped, randomly oriented filaments; the center ply and the layers being impregnated with resin to form a composite panel.
Claim 12
Dependent Claim
81 words
A corrugated composite panel, consisting essentially of: a center ply of longitudinal unidirectional reinforcing filaments, the filaments being continuous and running parallel to the corrugations of the panel; upper and lower transverse layers sandwiching the center ply of longitudinal filaments, the transverse layers being comprised of unidirectional reinforcing filaments oriented substantially perpendicular to the longitudinal filaments; at least one chopped layer of chopped, randomly oriented filaments; the center ply and the layers being impregnated with resin to form a composite panel.
Claim 13
Dependent Claim
38 words
The panel according to claim 9 wherein the chopped layer is located on an outer side of one of the transverse layers for increasing the resin content on the outer side and reducing shrinkage stresses in the panel.
Claim 14
Dependent Claim
28 words
The panel according to claim 9 wherein there are two chopped layers, each located on opposite sides of the center ply for reducing shrinkage stresses in the panel.
Claim 15
Dependent Claim
24 words
The panel according to claim 9 wherein the weight of the chopped layer is about 3-9 percent of the total weight of the panel.
Claim 16
Dependent Claim
41 words
The panel according to claim 9 wherein there are two chopped layers, each located on an outer side of one of the transverse layers for increasing the resin content on the outer sides and for reducing shrinkage stresses in the panel.
Claim 17
Dependent Claim
29 words
The panel according to claim 9 further including a layer of veil material located on outer side of one of the transverse layers and also impregnated with the resin.
Claim 18
Dependent Claim
31 words
The panel according to claim 9 further including two layers of veil material, each located on an outer side of one of the transverse layers and also impregnated with the resin.
References Cited (Backward Citations)
US4329194A
Cited
US4460633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |