US4268560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional structure having a preferential direction
Assignee: Societe Europeenne de Propulsion SEP SA
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Filing: 1979-03-20
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Granted: 1981-05-19
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Expires: 1999-03-20
Abstract
Abstract The present invention relates to a three-dimensional structure having a preferential direction, said structure comprising a main bundle constituted by equidistant rectilinear elements parallel to the preferential direction and four connecting bundles oriented in four different directions. A first and a second connecting bundle are formed of elements disposed in rows in planes parallel to the planes defined by the rows of the main bundle, the rows of the first and of the second bundle being disposed alternately in gaps between rows of elements of the main bundle. A third and a fourth connecting bundle are formed of elements disposed in rows in planes parallel to the planes defined by the alignments of opposite elements of adjacent rows of the main bundle, the rows of the third and fourth bundles being disposed alternately in gaps between alignments of elements of the main bundle. The structure is suitable as reinforcement for a composite material.
Inventors
- 👤 Michel Maistre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:43
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; F05; F05D; F05D2250/00; F05D2250/20; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24116; Y10T428/24124; Y10T428/24132; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
228 words
A three-dimensional structure having a preferential direction, consisting of a main bundle and four connecting bundles, said main bundle being constituted by main, rectilinear, filiform elements parallel to the preferential direction and disposed in parallel, regularly spaced apart rows extending along planes parallel to each other so as to form, in cross-section perpendicular to the preferential direction a network of square meshes, and each connecting bundle being constituted by rectilinear filiform connecting elements parallel to one another, the directions of the connecting bundles being different from one another and diagonal to the preferential direction, a first and a second connecting bundle being formed of elements disposed in first rows extending along first planes parallel to said planes defined by said rows of the main bundle, said first rows of the first and second bundles being disposed alternately in first gaps between successive ones of said rows of elements of the main bundle, and a third and a fourth connecting bundle being formed of elements disposed in second rows extending along second planes perpendicular to said first planes and parallel to the planes defined by alignments formed of opposite elements belonging to successive different ones of said rows of the main bundle, said second rows of the third and fourth bundles being disposed alternately in second gaps between successive ones of said alignments of elements of the main bundle.
Claim 2
Dependent Claim
228 words
A three-dimensional structure having a preferential direction, consisting of a main bundle and four connecting bundles, said main bundle being constituted by main, rectilinear, filiform elements parallel to the preferential direction and disposed in parallel, regularly spaced apart rows extending along planes parallel to each other so as to form, in cross-section perpendicular to the preferential direction a network of square meshes, and each connecting bundle being constituted by rectilinear filiform connecting elements parallel to one another, the directions of the connecting bundles being different from one another and diagonal to the preferential direction, a first and a second connecting bundle being formed of elements disposed in first rows extending along first planes parallel to said planes defined by said rows of the main bundle, said first rows of the first and second bundles being disposed alternately in first gaps between successive ones of said rows of elements of the main bundle, and a third and a fourth connecting bundle being formed of elements disposed in second rows extending along second planes perpendicular to said first planes and parallel to the planes defined by alignments formed of opposite elements belonging to successive different ones of said rows of the main bundle, said second rows of the third and fourth bundles being disposed alternately in second gaps between successive ones of said alignments of elements of the main bundle.
Claim 3
Dependent Claim
34 words
A structure as claimed in claim 1, wherein the directions of the first and second connecting bundles form an angle equal to that formed by the directions of the third and fourth connecting bundles.
Claim 4
Dependent Claim
21 words
A structure as claimed in claim 1, wherein the elements of each connecting bundle are, in each row, regularly spaced apart.
Claim 5
Dependent Claim
18 words
A structure as claimed in claim 1, wherein the elements of each connecting bundle have a constant cross-section.
Claim 6
Dependent Claim
49 words
A structure as claimed in claim 4, wherein the dimension of each connecting element, measured perpendicularly to the plane parallel to the rows of the connecting bundle containing the connecting elements, is equal to the width of said first or second gap in which each connecting element is housed.
Claim 7
Dependent Claim
24 words
A structure as claimed in claim 1, wherein the elements of the main bundle have a larger cross-section than that of the connecting elements.
Claim 8
Dependent Claim
18 words
A structure as claimed in claim 1, wherein the elements of the main bundle have a square cross-section.
Claim 9
Dependent Claim
21 words
A structure as claimed in claim 1, wherein the elements of the successive rows of each connecting bundle are quincunxially arranged.
Claim 10
Dependent Claim
35 words
A structure as claimed in claim 1, wherein the elements of the successive rows of each connecting bundle are aligned along planes perpendicular to the plane parallel to the rows of the respective connecting bundle.
Claim 11
Dependent Claim
245 words
A three-dimensional structure having a preferential direction, consisting of a main bundle and four connecting bundles, said main bundle being constituted by main, rectilinear, filiform elements parallel to the preferential direction and disposed in regularly spaced apart rows extending along planes parallel to each other so as to form, in cross-section perpendicular to the preferential direction, a network of square meshes, and said connecting bundles being each constituted by rectilinear filiform connecting elements, and having directions different from each other and diagonal to the preferential direction, a first and a second connecting bundle being formed of elements disposed in first rows extending along planes parallel to said rows of main elements and disposed alternately in first gaps therebetween with the direction of said first bundle being at a first angle with respect to the preferential direction equal to but opposite the angle between the direction of the second bundle and the preferential direction, and a third and a fourth connecting bundle being formed of elements disposed in second rows extending along planes perpendicular to said rows of main elements and disposed alternately in second gaps between successive alignments formed of opposite main elements belonging to successive different ones of said rows of the main bundle, with the direction of said third bundle being at an angle with respect to the preferential direction equal to said first angle and equal to but opposite the angle between the direction of the fourth bundle and the preferential direction.
Claim 12
Dependent Claim
245 words
A three-dimensional structure having a preferential direction, consisting of a main bundle and four connecting bundles, said main bundle being constituted by main, rectilinear, filiform elements parallel to the preferential direction and disposed in regularly spaced apart rows extending along planes parallel to each other so as to form, in cross-section perpendicular to the preferential direction, a network of square meshes, and said connecting bundles being each constituted by rectilinear filiform connecting elements, and having directions different from each other and diagonal to the preferential direction, a first and a second connecting bundle being formed of elements disposed in first rows extending along planes parallel to said rows of main elements and disposed alternately in first gaps therebetween with the direction of said first bundle being at a first angle with respect to the preferential direction equal to but opposite the angle between the direction of the second bundle and the preferential direction, and a third and a fourth connecting bundle being formed of elements disposed in second rows extending along planes perpendicular to said rows of main elements and disposed alternately in second gaps between successive alignments formed of opposite main elements belonging to successive different ones of said rows of the main bundle, with the direction of said third bundle being at an angle with respect to the preferential direction equal to said first angle and equal to but opposite the angle between the direction of the fourth bundle and the preferential direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |