Triaxially woven fabrics of uniform compliancy and porosity

Claim 2

In a triaxially woven fabric comprising three sets of parallel yarn courses, the yarn courses of each set forming an angle of approximately 60* with the intersecting yarn courses of each other set, the improvement consisting of a repetitive weave pattern with relatively uniform porosity said pattern including unstabilized lengths of yarn courses in each yarn course set, said unstabilized lengths in each yarn course set crossing at least two intersecting yarn courses of one of the remaining yarn course sets, said unstabilized lengths providing some compliancy to the fabric, said compliancy being relatively isotropic in the plane of the fabric.

Claim 3

In a triaxially woven fabric comprising three sets of parallel, paired yarn courses, the courses of each pair lying next to one another and spaced from adjacent parallel paris by a distance of one yarn diameter, one of said sets comprising wefts disposed perpendicular to the length of said fabric and the other of said sets comprising 11 o''clock and 1 o''clock warps, respectively, the yarn courses of each set forming angles of approximately 60* with the intersecting yarn courses of each of said remaining setS, all of said 1 o''clock yarn courses passing over all intersecting 11 o''clock yarn courses, the improvement consisting of a compliant, repetitive weave pattern in which a. a first weft passes from left to right, under a first 11 o''clock warp then over paired second and third 11 o''clock warps, while at the same time passing over a first 1 o''clock warp and under a second 1 o''clock warp paired therewith, thence over paired fourth and fifth 11 o''clock warps and under paired third and fourth 1 o''clock warps, and thence over a sixth 11 o''clock warp and under a seventh 11 o''clock warp paired therewith and under paired fifth and sixth 1 o''clock warps, said seventh 11 o''clock warp corresponding to said first 11 o''clock warp in the next lateral repetition of the weft path; b. a second weft, forming a pair with said first weft and being disposed parallel thereto but removed in a 12 o''clock direction therefrom, said second weft passing over all of said 11 o''clock warp except said fourth warp which it passes under and under all of said 1 o''clock warps, except said second 1 o''clock warp which it passes over; c. a third weft disposed parallel to said second weft and displaced in a 12 o''clock direction from said second weft and spaced one yarn diameter therefrom, said third weft passing under all of said 1 o''clock warps and over all of said 11 o''clock warps, except said third 1 o''clock warp which it passes over and said fifth 11 o''clock yarn which it passes under; d. a fourth weft, paired with and parallel to said third weft and disposed in a 12 o''clock direction therefrom, said fourth weft passing under all of said 11 o''clock warps, except said fourth 1 o''clock yarn which it passes over and under an eighth 11 o''clock yarn lying adjacent and paralleling said seventh 11 o''clock yarn spaced one yarn diameter thereform.

Claim 4

In a triaxially woven fabric comprising three sets of parallel, paired yarn courses, the courses of each pair lying next to one another and spaced from adjacent parallel paris by a distance of one yarn diameter, one of said sets comprising wefts disposed perpendicular to the length of said fabric and the other of said sets comprising 11 o''clock and 1 o''clock warps, respectively, the yarn courses of each set forming angles of approximately 60* with the intersecting yarn courses of each of said remaining setS, all of said 1 o''clock yarn courses passing over all intersecting 11 o''clock yarn courses, the improvement consisting of a compliant, repetitive weave pattern in which a. a first weft passes from left to right, under a first 11 o''clock warp then over paired second and third 11 o''clock warps, while at the same time passing over a first 1 o''clock warp and under a second 1 o''clock warp paired therewith, thence over paired fourth and fifth 11 o''clock warps and under paired third and fourth 1 o''clock warps, and thence over a sixth 11 o''clock warp and under a seventh 11 o''clock warp paired therewith and under paired fifth and sixth 1 o''clock warps, said seventh 11 o''clock warp corresponding to said first 11 o''clock warp in the next lateral repetition of the weft path; b. a second weft, forming a pair with said first weft and being disposed parallel thereto but removed in a 12 o''clock direction therefrom, said second weft passing over all of said 11 o''clock warp except said fourth warp which it passes under and under all of said 1 o''clock warps, except said second 1 o''clock warp which it passes over; c. a third weft disposed parallel to said second weft and displaced in a 12 o''clock direction from said second weft and spaced one yarn diameter therefrom, said third weft passing under all of said 1 o''clock warps and over all of said 11 o''clock warps, except said third 1 o''clock warp which it passes over and said fifth 11 o''clock yarn which it passes under; d. a fourth weft, paired with and parallel to said third weft and disposed in a 12 o''clock direction therefrom, said fourth weft passing under all of said 11 o''clock warps, except said fourth 1 o''clock yarn which it passes over and under an eighth 11 o''clock yarn lying adjacent and paralleling said seventh 11 o''clock yarn spaced one yarn diameter thereform.

Claim 5

In a triaxially woven fabric, as recited in claim 2, the further improvement consisting of selvage edges formed by reversing the lateral direction of each of said 11 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 11 o''clock warp passes over said weft and by reversing the lateral direction of each of said 1 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 1 o''clock warp passes under said weft.

Claim 6

In a triaxially woven fabric, as recited in claim 3, the further improvement consisting of providing a total number of warps in said warp yarn sets which is divisible by 15.

Claim 7

In a triaxially woven fabric comprising three sets of parallel yarn courses, the intersecting courses of each forming angles of approximately 60* with one another, one of said sets comprising wefts running perpendicular to the length of said fabric and the other two of said sets comprising 1 o''clock and 11 o''clock warps, respectively, said 1 o''clock warps overlying said 11 o''clock warps throughout the fabric, the improvement consisting of a compliant repetitive weave pattern in which said wefts pass from left to right, alternatively over and under successive 11 o''clock warps and also over and under successive 1 o''clock warps; a. a first weft woven, with reference to the adjacent weft disposed parallel to and removed in the 6 o''clock direction therefrom and to specific 1 o''clock and 11 o''clock warps, such that the over-under pattern is exactly opposite that of said reference weft with said 11 o''clock warps and the same as that of said reference weft with said 1 o''clock warps; b. a second weft, adjacent said first weft and disposed parallel to and removed in the 12 o''clock direction therefrom, woven, with referenCe to said first weft and to specific 1 o''clock and 11 o''clock warps, such that the over-under pattern is the same as that of said first weft with said 11 o''clock warps and opposite that of said first weft with said 1 o''clock warps; c. a third weft, adjacent and parallel to said second weft and removed in the 12 o''clock direction therefrom, woven, with reference to said second weft and to specific 1 o''clock warps, such that the over-under pattern is opposite that of said second weft with said 11 o''clock warps and the same as that of said second weft with said 1 o''clock warps.

Claim 8

In a triaxially woven fabric comprising three sets of parallel yarn courses, the intersecting courses of each forming angles of approximately 60* with one another, one of said sets comprising wefts running perpendicular to the length of said fabric and the other two of said sets comprising 1 o''clock and 11 o''clock warps, respectively, said 1 o''clock warps overlying said 11 o''clock warps throughout the fabric, the improvement consisting of a compliant repetitive weave pattern in which said wefts pass from left to right, alternatively over and under successive 11 o''clock warps and also over and under successive 1 o''clock warps; a. a first weft woven, with reference to the adjacent weft disposed parallel to and removed in the 6 o''clock direction therefrom and to specific 1 o''clock and 11 o''clock warps, such that the over-under pattern is exactly opposite that of said reference weft with said 11 o''clock warps and the same as that of said reference weft with said 1 o''clock warps; b. a second weft, adjacent said first weft and disposed parallel to and removed in the 12 o''clock direction therefrom, woven, with referenCe to said first weft and to specific 1 o''clock and 11 o''clock warps, such that the over-under pattern is the same as that of said first weft with said 11 o''clock warps and opposite that of said first weft with said 1 o''clock warps; c. a third weft, adjacent and parallel to said second weft and removed in the 12 o''clock direction therefrom, woven, with reference to said second weft and to specific 1 o''clock warps, such that the over-under pattern is opposite that of said second weft with said 11 o''clock warps and the same as that of said second weft with said 1 o''clock warps.

Claim 9

In a triaxially woven fabric as recited in claim 5, the further improvement consisting of selvage edges formed by reversing the lateral direction of each of said 11 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 11 o''clock warp passes over said weft and by reversing the lateral direction of each of said 1 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 1 o''clock warp passes under said weft.

Claim 10

In a triaxially woven fabric, as recited in claim 6, the further improvement consisting of providing a total number of warps in said warp yarn sets which is divisible by 4.

Claim 11

In a triaxially woven fabric comprising three sets of parallel yarn courses with equal spacing therebetween throughout the fabric, the intersecting courses of each forming angles of approximately 60* with one another, one of said sets comprising wefts running perpendicular to the length of said fabric and the other two of said sets comprising 1 o''clock and 11 o''clock warps, respectively, said 1 o''clock warps overlying said 11 o''clock warps throughout the fabric, the improvement consisting of a compliant repetitive weave pattern in which a first weft passes successively under a first 1 o''clock warp, over a first 11 o''clock warp, over a second 1 o''clock warp, over a second 11 o''clock warp, under a third 1 o''clock warp and under a third 11 o''clock warp, said pattern being laterally transposed one warp yarn position to the right with each successive weft, such that a second weft adjacent said first weft and disposed in the 12 o''clock direction therefrom, passes over said third 1 o''clock warp and under the two adjacent 1 o''clock warps on either side thereof, and also passes under said second 11 o''clock warp and over the two adjacent 11 o''clock warps on either side thereof.

Claim 12

In a triaxially woven fabric comprising three sets of parallel yarn courses with equal spacing therebetween throughout the fabric, the intersecting courses of each forming angles of approximately 60* with one another, one of said sets comprising wefts running perpendicular to the length of said fabric and the other two of said sets comprising 1 o''clock and 11 o''clock warps, respectively, said 1 o''clock warps overlying said 11 o''clock warps throughout the fabric, the improvement consisting of a compliant repetitive weave pattern in which a first weft passes successively under a first 1 o''clock warp, over a first 11 o''clock warp, over a second 1 o''clock warp, over a second 11 o''clock warp, under a third 1 o''clock warp and under a third 11 o''clock warp, said pattern being laterally transposed one warp yarn position to the right with each successive weft, such that a second weft adjacent said first weft and disposed in the 12 o''clock direction therefrom, passes over said third 1 o''clock warp and under the two adjacent 1 o''clock warps on either side thereof, and also passes under said second 11 o''clock warp and over the two adjacent 11 o''clock warps on either side thereof.

Claim 13

In a triaxial fabric as recited in claim 8, the improvement wherein the adjacent yarn courses in each of said sets abut one another.

Claim 14

In a triaxially woven fabric as recited in claim 8, the further improvement consisting of selvage edges formed by reversing the lateral direction of each of said 11 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 11 o''clock warp passes over said weft and by reversing the lateral direction of each of said 1 o''clock warps at an intersection of said warp with the edge of said fabric at a weft position wherein said 1 o''clock warp passes under said weft.