Patent US5483527A successfully refreshed from Google Patents.
US4090002A
Expired / Lapsed
US
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Reinforced fiber structures and method of making the same
Assignee: Individual
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Filing: 1973-04-16
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Granted: 1978-05-16
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Expires: 1993-04-16
Abstract
Abstract A fiber-reinforced plastic structure is obtained by weaving fibers in one direction about one or more spacing members located angularly to the fibers. The fibers may be either warp or woof stands, the spacing member serving as woof when the fibers from warp strands, and as warp when the fibers form woof strands. The removal of the spacing member leaves relatively large open channels forming, in effect, a multi-wall hollow structure. The resultant structure may be partially or completely treated with a plastic resin system prior to or after the removal of some or all of the members. The solidified resin reinforced structure may be filled with a foam-in-place plastic, and it may be stacked in layers to provide additional thickness with reinforcing fibers running in different directions for additional strength. Some fibers may extend from one ply into an adjacent ply or into more remote plies. The hardened structure may also be stacked to provide a honeycomb configuration and may be sliced into thin sections with sheets of additional fiber-reinforced plastic material on each side or each end to produce a structure of high strength-to-weight characteristics.
Inventors
- 👤 Jesse Rosenblum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
D; D03; D03D; D03D1/00; D03D15/00; D03D15/50; D03D15/593; D03D15/60; D03D15/68; D10; D10B; D10B2505/00; D10B2505/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1362; Y10T428/1369; Y10T428/23; Y10T428/234; Y10T428/24; Y10T428/24132; Y10T428/24149; Y10T428/24157; Y10T428/24165; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
117 words
A structural member comprising: a solidified cured synthetic resin portion and a fibrous reinforcement comprising elongated fibers embedded in said resin portion and bent into the configuration of, and extending in the direction of, either warp or woof fibers, but not both, of a woven fabric, certain of said fibers being bent to define one side of open loop areas, each of said areas having a size and shape determined by the size and shape of the missing woof or warp strands, respectively, of said fabric, and the next adjacent fiber on at least one side of said certain fibers being bent to define the opposite side of at least selected ones of said open loop areas.
Claim 2
Dependent Claim
117 words
A structural member comprising: a solidified cured synthetic resin portion and a fibrous reinforcement comprising elongated fibers embedded in said resin portion and bent into the configuration of, and extending in the direction of, either warp or woof fibers, but not both, of a woven fabric, certain of said fibers being bent to define one side of open loop areas, each of said areas having a size and shape determined by the size and shape of the missing woof or warp strands, respectively, of said fabric, and the next adjacent fiber on at least one side of said certain fibers being bent to define the opposite side of at least selected ones of said open loop areas.
Claim 3
Dependent Claim
97 words
A non-woven structural member comprising: a fibrous material containing undirectional fibers bent only as warp or woof fibers, but not both, and having at least one open loop area located at an angle relative to the direction of the fibers, at least certain of said fibers being bent to define one side of said loop area and the next adjacent fibers on one side of said certain fibers being bent to define the opposite side of said loop area, at least some portions of the fibrous material being rigidified by impregnation with a resin and completely cured.
Claim 4
Dependent Claim
97 words
A non-woven structural member comprising: a fibrous material containing undirectional fibers bent only as warp or woof fibers, but not both, and having at least one open loop area located at an angle relative to the direction of the fibers, at least certain of said fibers being bent to define one side of said loop area and the next adjacent fibers on one side of said certain fibers being bent to define the opposite side of said loop area, at least some portions of the fibrous material being rigidified by impregnation with a resin and completely cured.
Claim 5
Dependent Claim
38 words
A member according to claim 2 comprising a plurality of plies and having a plurality of loops wherein at least some fibers extend from a loop area in one ply to a loop area in a different ply.
Claim 6
Dependent Claim
22 words
A member according to claim 2 wherein substantially all of the fibers are rigidified by impregnation with a resin and completely cured.
Claim 7
Dependent Claim
32 words
A member according to claim 4 comprising a plurality of plies wherein at least some fibers extend from a loop area in one ply to a loop area in a different ply.
Claim 8
Dependent Claim
39 words
A member according to claim 2 wherein the rigidified portions of the fibrous material are arranged in a discontinuous pattern whereby portions of at least some loops are not impregnated, thereby imparting a degree of flexibility to the member.
Claim 9
Dependent Claim
22 words
A structural member according to claim 1 wherein a plurality of solidified portions having fibrous reinforcement embedded therein are superimposed in layers.
Claim 10
Dependent Claim
24 words
A member according to claim 7 wherein the fibers of each layer are disposed at an angle to the fibers in each adjacent layer.
Claim 11
Dependent Claim
20 words
The structural member of claim 1 in which said fibers define loop areas having larger cross sections than said fibers.
Claim 12
Dependent Claim
18 words
The structural member of claim 1 in which said fibers define adjacent loop areas arranged in straight-line alignment.
Claim 13
Dependent Claim
15 words
The structural member of claim 1 in which said fibers define passageways through said member.
Claim 14
Dependent Claim
15 words
The structural member of claim 1 in which said loop areas contain solidified plastic foam.
Claim 15
Dependent Claim
19 words
The structural member of claim 1 in which said resin is only on the periphery of said loop areas.
Claim 16
Dependent Claim
88 words
A structural member comprising: first and second sheets of glass fiber-reinforced solid, cured synthetic resin; and a glass fiber-reinforced, cured synthetic resin central structure adhesively joined to both said first sheet and said second sheet, said central structure comprising a series of layers of glass fiber fill strands formed in woven pattern and certain of said strands defining one side of open loops corresponding to warp strands woven with said fill strands and others of said strands adjacent said certain strands defining the opposite side of said loops.
Claim 17
Dependent Claim
88 words
A structural member comprising: first and second sheets of glass fiber-reinforced solid, cured synthetic resin; and a glass fiber-reinforced, cured synthetic resin central structure adhesively joined to both said first sheet and said second sheet, said central structure comprising a series of layers of glass fiber fill strands formed in woven pattern and certain of said strands defining one side of open loops corresponding to warp strands woven with said fill strands and others of said strands adjacent said certain strands defining the opposite side of said loops.
Claim 18
Dependent Claim
108 words
A non-woven article of manufacture comprising: a plurality of substantially only fill fibers in a pattern defining channels substantially perpendicular to said fill fibers and of substantially greater cross-sectional area then the cross-sectional area of said fill fibers certain ones of said fill fibers being bent to define only one side of at least selected ones of said channels, and the next adjacent fill fibers on at least one side of said certain fill fibers being bent to define only the opposite side of said selected channels; and cured plastic resin impregnated into selected areas of said fibers to fix the arrangement of said fibers in said areas.
Claim 19
Dependent Claim
108 words
A non-woven article of manufacture comprising: a plurality of substantially only fill fibers in a pattern defining channels substantially perpendicular to said fill fibers and of substantially greater cross-sectional area then the cross-sectional area of said fill fibers certain ones of said fill fibers being bent to define only one side of at least selected ones of said channels, and the next adjacent fill fibers on at least one side of said certain fill fibers being bent to define only the opposite side of said selected channels; and cured plastic resin impregnated into selected areas of said fibers to fix the arrangement of said fibers in said areas.
Claim 20
Dependent Claim
15 words
The article of claim 15 in which said areas define a periphery of said pattern.
Claim 21
Dependent Claim
16 words
The article of claim 15 comprising a hollow tubular warp member in one of said channels.
Claim 22
Dependent Claim
12 words
The article of claim 17 in which said warp member is flexible.
Claim 23
Dependent Claim
61 words
The article of manufacture of claim 15 in which said layers of the woven fill fibers are stacked together with all of said channels aligned parallel to each other and in interlocking relationship whereby the end of the resultant structure has a honeycomb configuration, said article comprising, in addition, first and second plates bonded to opposite surfaces of the honeycomb structure.
Claim 24
Dependent Claim
17 words
The article of manufacture of claim 19 in which said channels are of similar and nesting cross-section.
Claim 25
Dependent Claim
13 words
The article of manufacture of claim 20 in which said channels are triangular.
Claim 26
Dependent Claim
13 words
The article of manufacture of claim 20 in which said channels are square.
Claim 27
Dependent Claim
13 words
The article of manufacture of claim 20 in which said channels are hexagonal.
Claim 28
Dependent Claim
20 words
The article of claim 19 in which said plates are substantially flat and are made of solidified, glass fiber-reinforced resin.
Claim 29
Dependent Claim
35 words
The article of claim 15 comprising a multiplicity of layers of said fill fibers in woven pattern with the fill fibers in alternate layers extending substantially perpendicularly to each other and said layers bonded together.
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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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |