US3834424A - Three-dimensional fabric, and method and loom construction for the production thereof - Google Patents

Three-dimensional fabric, and method and loom construction for the production thereof Download PDF

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Publication number
US3834424A
US3834424A US00342602A US34260273A US3834424A US 3834424 A US3834424 A US 3834424A US 00342602 A US00342602 A US 00342602A US 34260273 A US34260273 A US 34260273A US 3834424 A US3834424 A US 3834424A
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United States
Prior art keywords
yarns
weft
vertical
yarn
warp yarns
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US00342602A
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English (en)
Inventor
K Fukuta
R Miyashita
J Sekiguti
Y Nagatsuka
S Tsuburaya
E Aoki
M Sasahara
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National Institute of Advanced Industrial Science and Technology AIST
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Agency of Industrial Science and Technology
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D03D41/004—Looms for three-dimensional fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

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  • ABSTRACT Method of weaving a three-dimensional fabric which comprises the steps of inserting a number of doubled ft yarns between the layers of the war curingvthe loops which connect the we means of a binderyarn threaded therethrou ing vertical yarns between the vertical r0 yarns perpendicularly to the weft and wa first two steps beating the woven yarn with a reed.
  • a loom for can is also disclosed.
  • Three-dimensional fabrics have extensive usage, for example, as brake linings, as fillers for valves and as reinforcing material.
  • Existing three-dimensional fabrics are mostly formed by superposing or laminating multiple layers of plane or flat fabrics with use of a suitable adhesive agent, or by connecting more than two layers of plane fabrics to an intermediate fabric layer. These fabrics can be said to have a three-dimensional shape but do not have a three-dimensional construction in a strict sense because of the use of merely two types of yarns, i.e., warp and weft yarns.
  • the so-called woven belt in which the thickness in the vertical direction of the belt is imparted by interweaving weft yarns with a portion of warp yarns, the thickness of the fabric is limited anditis difficult to obtain a three-dimensional fabric construction of a desired thickness.
  • the present invention has as its object the provision of a three-dimensional fabric construction and a weaving methodand apparatus for the production thereof, which allow formation of the three-dimensional fabric on an industrial scale, in a desired size and in the same simple manner as in weaving of flat fabrics, the threedimensional fabric being imparted with sufficient mechanical strengths in all directions by means of groups of warp, weft and vertical yarns which are interwoven perpendicularly to each other.
  • a three-dimensional fabric is formed efficiently by a simple method and apparatus which are comperable to those of flat fabrics, the threedimensional fabric being formed by repeating a cycle of operation which comprises the steps of inserting doubled weft yarns which are looped at fore ends thereof into spaces between warp yarns which are parallelly aligned in vertical and horizontal directions to provide a number of warp layers and rows, securing the weft yarns by inserting a selvage binder yarn into the weft loops, and introducing vertical yarns into spaces between vertical rows of the warp yarns.
  • the fore feeding ends of a vertical yarn inserting device are curved in one and same direction for feeding the vertical yarns with a space behind lastly inserted vertical yarns to allow insertion of a weft inserting devicetherethrough.
  • the weft inserting device is provided at the fore end thereof with a weft guide hole for receiving a weft yarn and with a recessed portion within a loop formed by the weft yarn for passing a binder threading needle, thus simplifying the loom construction and carrying out the weaving operation in a secure manner.
  • a threedimensional fabric construction which comprises: a plurality of warp yarns parallelly aligned in horizontal and vertical directions to form a number of horizontal warp layers and vertical warp rows; a number of weft yarns inserted into spaces between the respective warp layers of said warp yarns in a direction perpendicular thereto and being turned at one side of said fabric around a vertical yarn and at the other side around a binder yarn which is inserted into loops formed by said weft yarns at said other side of said fabric for holding said weft yarns securely in position; and a number of vertical yarns inserted into spaces between the respec-' tive vertical warp rows of said warp yarns in a direction perpendicular to both of said warp yarns and said weft yarns and turned around outermost weft yarns at both sides of said fabric.
  • FIGS. 3(A) to FIG. 3(D) are diagrams showing the steps of the weft inserting operation by the device shown in FIG. 2;
  • FIG. 4 is a perspective view showing a modified structure of the weft inserting device according to the present invention.
  • FIG. 5 is a perspective view diagrammatically showing binder threading and connecting operations
  • FIG. 6 is a perspective view showing details of an upper vertical yarn inserting device employed in the loom according to the present invention.
  • FIG. 7 is a side view showing interweaving operation of the weft and vertical yarns
  • FIG. 8 is a diagram showing in plan view the yarn arrangment in the three-dimensional fabric construction formed by the method according to the present invention.
  • FIG. 9 is a diagram showing the same fabric construction in side view.
  • FIG. 10 is a perspective view showing a loom embodying the present invention.
  • FIG. 1 1 is a diagram showing a weaving program for forming the three-dimensional fabric according to the present invention.
  • FIG. I which diagrammatically shows weaving operation according to the present invention, wherein the warp yarns Y,Y,Y, Y are passed through a reed 1 through a number of holes formed therein at uniform intervals in both horizontal and vertical directions, the warp yarns being supported and tensioned suitably by a pair of supporting members 2 and 3 which-are located at both ends of the loom as will be described in more greater detail with reference to FIG. 10.
  • the warp yarns Y are arranged in multiple layers each of which has a number of yards which run in one horizontal plane in parallel relation with or at an equal space from adjacent yarns.
  • the warp yarns of the respective layers are in vertical alignment, forming regularly spaced vertical warp rows.
  • the weft inserting device 6 is first picked transversely or perpendicularly to the warp yarns while maintaining the upper and lower vertical yarn inserting devices 4 and 5 in the upper and lower retracted positions as shown in FIG. 1, each of the weft yarns X,X, X being inserted between the warp layers in double fold forming a loop at the .fore end thereof.
  • the weft inserting device 6 is temporarily stopped when the looped fore ends. of the weft yarns are projected out of the warp yarns on the opposite side for threading a binder yarn P.
  • FIG. 2 diagrammatically shows the construction of the weft inserting device by way of example, wherein the weft inserting device 6 comprises a number of elongated picking plates 7,7, ,7 which are spaced from each other at the same distance as the warp layers and are securely supported on a supporting member 8 for insertion into the spaces between the respective layers of the tensioned warp yarns.
  • Each one of the picking plate 7 has the tip end thereof bifurcated by a forwardly opened U-shaped notch or cut-away portion 9.
  • One of the bifurcated end portions of the picker plate 7 is transversely formed with a weft guide through hole 10 which extends from the outer side of the plate to the notched or recessed inner side while the other, bifurcated end portion of the picking plate has formed on the tip end face thereof with a weft guide groove 11 for engagement with a weft yarn.
  • the picking plates 7 of the weft inserting device 6 are passed into the respective spaces between the warp yarn layers as shown in FIG. 3A.
  • the weft inserting device 6 catches and holds the weft yarns in the weft guide grooves l 1 in the vicinity of the first row of the warp yarns, and advances transversely of the warp rows as shown in FIG. 3B for filling in the weft yarns.
  • the weft inserting device 6 When the fore ends of the picking plates 7 of the weft inserting device 6 are projected outwardly on the other side of the warp yarns, the weft inserting device 6 is temporarily stopped for threading a binder yarn into the looped ends of the weft yarns by means of a selvage binder inserting needle 12 which will be described hereinlater.
  • This binder threading operation is shown particularly at (C) of FIG. 3.
  • the weft yarns X are disengaged from the weft guide grooves 11 as the weft inserting device 6 is retracted to the initial position, guiding the weft yarns X under tensioned conditions by means of theweft guide holes 10 as shown at (D) of FIG. 3.
  • FIG. 4 shows a modified structure of the weft inserting device.
  • the weft picker is provided with a number of picking plates 7a which are similar to those of the embodiment described above but each has at the fore end thereof a sidewardly opened U-shaped recess 9a and a weft guide hole 10a which extends transversely through the picking plate 7a at the tip end thereof.
  • this modified weft inserting plate 7a in order to prevent the binder inserting needle 12 and the binder yarn from hitting on the edges of the recessed portion 9a, it is preferred to take measures for displacing the whole picking plate or the fore end portion thereof in a suitable direction or measures for displacing the selvage binder insertion needle 12 when it is disengaged from the recessed portion 9a.
  • the selvage formation is carried out by passing from above a binder inserting needle 12 which holds a binder yarn P in its needle hole 13 through vertically aligned weft loops as shown in FIG. 5.
  • a selvage securing latch needle 14 is advanced toward the binder insertion needle 12 to catch the binder yarn P, the latch needle 14 returning to the initial position after catching the binder yarn P.
  • the latch 15 of the latch needle 14 is adapted to be closed as it hits on a guide member which is provided in the path of movement of the latch needle 14 and the binder yarn P caught by the latch needle 14 is passed through a binder loop formed in the previous cycle of operation. After the binder yarn P is caught by the latch needle 14, the binder insertion needle 12 is returned to its initial upper position.
  • the weaving of the binder P atthe selvage may be carried out by simply moving the binder inserting needle 12 up and down through the weft loops without using the latch needle as mentioned hereinabove.
  • the weft inserting device 6 retracts to its initial position and the reed 1 beats up the weft yarns which have been picked in between the respective warp layers.
  • the upperand lower vertical yarn inserting devices 4 and 5 are simultaneously lowered and raised, respectively, for introducing the upper and lower vertical yarns Z,Z, ,Z and Z',Z', ,2, into the spaces between the vertical rows of the warp yarns.
  • FIG. 6 diagramatically shows details of the construction of the upper vertical yarn inserting device 4, which comprises a plurality of vertical yarn picking pipes 16 of metallic material with the lower ends thereof curved in the same direction, each vertical yarn picker pipe being secured on a supporting member 17 parallel to and at a such distance from adjacent pipes that one picking pipe is inserted into every two spaces between the vertical rows of the warp yarns.
  • This vertical picking means is not necessarily required to be formed from a pipe and instead a flat plate with a guide means for the vertical yarn may be used.
  • the lower vertical yarn inserting device 5 may have the same construction as the upper vertical picking means 4 with the vertical yarn picking pipes 16 in an inversed position for introducing from beneath the lower vertical yarns into he spaces between the vertical rows of the warp yarns, in such a manner the spaces between the vertical warp rows receive alternately the upper and lower vertical yarn picking pipes.
  • the upper vertical yarns Z,Z, ,Z which .are fed from bobbins are guided into the respective picking pipes 16 from the upper ends thereof and are taken out through the curved lower ends.
  • the lower vertical yarns Z',Z, ,Z are fed in he same manner except that they are guided into he lower picking pipes from the lower ends and taken out through the upper curved ends thereof.
  • the upper and lower vertical yarn picking devices 4 and 5 start movement into the warp yarns from the respective positions shown in FIG. 1 when one cycle of weft picking operation has been completed.
  • the picking pipes 16 and 18 of the upper and lower vertical yarn picking devices 4 and 5 are inserted alternately into the spaces between the vertical rows of warp yarns, as shown in FIG. 7, until the curved fore ends of the pipes 16 and 18 projected outwardly from the opposite upper and lower side of the aligned warp yarns, respectively.
  • the upper and lower vertical yarns 2,2 are turned around the lowermost and uppermost weft yarn layers perpendicularly thereto in the spaces between the vertical rows of the warp yarns Y,Y, ,Y.
  • the picker plates 7 of the weft yarn inserting device 6 should be introduced into the spaces between the warp layers without hitting on the vertical yarn picking pipes 16 and 18.
  • the fore end portions of the vertical yarn picking pipes 16 and 18 are curved to provide a space beneath and over the upper and lower vertical yarn picking pipes 16 and 18 to allow insertion of the weft inserting device 6 therethrough, the width of the space being slightly larger than the width of the weft picking plates 7.
  • the weft inserting device 6 is retracted to complete one cycle of weft picking operation.
  • the upper and lower vertical yarn inserting devices 4 and 5 are retracted to the respective upper and lower positions, thus filling in the upper "and lower vertical yarns Z and Z.
  • a three-dimensional fabric may be woven by repeating the various operations described above.
  • FIG. 8 diagramatically shows in a plan view the weave construction of the three-dimensional fabric formed in the manner as described hereinbefore, while FIG. 9 shows the same weave construction in a side elevation.
  • the weft yarns are interwoven with and extended over the .entire width of the warp yarns which-are tensioned parric and by the outermost warp yarn at the other side.
  • the upper and lower vertical yarns Z and Z are turned around at the top and bottom of the fabric in such a manner as to connect adjacent two weft yarns together in a position between the vertical rows of the warp yarns.
  • Examples of materials which are useful for weaving the three-dimensional fabric according to the present invention are ordinary organic fibrous materials such as cotton, linen, wool, nylon, polyester and polypropyrene and the like and other inorganic fibrous materials such as glass fibre, carbon fibre, metallic fibre. asbestos and the like. It will be appreciated that the fibrous materials just mentioned may be used in a spinned form or in the form of a filament.
  • FIG. 10 shows a loom which is adapted to produce a three-dimensional fabric in accordance with the weaving method discussed hereinbefore.
  • the apparatus shown in FIG. 10 has the weft picking or inserting device 6 on-an opposite side of the warp yarn rows as compared to the embodiment shown hereinbefore. It will understood that this makes no material difference.
  • the loom is supported on a machine frame 19 which has mounted at the fore and rear ends thereof a pair of supporting plates 2 and 3.
  • the supporting plate 2 has a plurality of fine holes at such positions suitable for holding the fore ends of the horizontally and vertically aligned warp yarns.
  • the fore ends of the warp yarns which are passed through these fine holes are secured in position by suitable means provided on the opposite or rear side of the warp supporting plate 2.
  • the other supporting plate 3 is also provided with a number of fine holes in a similar manner.
  • the other or rear ends of the warp yarns are passed through these fine holes of the warp supporting plate 3 and have weights suspended therefrom for imparting suitable tension to the aligned warp yarns.
  • the reed member 1 passing the warp rows, upper vertical yarn inserting means 4, lower vertical yarn inserting means 5, weft inserting means, binder threading needle 12 and mechanisms for operating these component parts are all supported on a carrier 21 which is mounted on and movable back and forth along guide rods 22 which are fixed on the machine frame 19 on each side thereof.
  • the carrier 21 is moved toward the unwoven ends of the warp yarns by a necessary distance by rotating a rod screw 24 by a motor.
  • the upper vertical yarn inserting device 4 mounted on the carrier 21 has a construction as described hereinbefore with reference to FIG. 6 and has vertical inserting yarns Z,Z, ,2 fed from bobbins 25.
  • the upper vertical yarn inserting device 4 has a moving member connected to the supporting member 8 thereof, the moving member 26 is movable up and down under a guidance of a suitable guide means which is not shown in the drawings.
  • the upward and downward movements of the moving plate member 26 are imparted by rotation of a rod screw 27 which is threaded therethrough.
  • the rod screw 27 is connected, through an electromagnetic breakes 28, 28 and electromagnetic clutches 29, 29 to a pair of motors 30, 30 which are adapted to rotate in opposite directions.
  • the direction of rotation of the rod screw 27 may be changed promptly by sending operation signals to the electromagnetic breakes 28, 28 and electromagnetic clutches 29, 29 in accordance with weaving cycles of the vertical yarns for imparting the required upward and downward movements to the upper vertical yarn inserting device 4, without changing the directions of rotation of the respective motors 30, 30.
  • the lower vertical inserting yarns Z',Z, ,Z fed from bobbins 31 are, as mentioned hereinbefore, introduced into the spaces between the vertical rows of the warp yarns by the lower vertical yarn inserting device which is also movable up and down under guidance of a suitable guide means (not shown) and to which upward and downward movements are imparted by a rod screw 32 in a manner similar to the upper vertical yarn inserting means 4.
  • the direction of such movements may suitably be switched by connecting and disconnecting the motors 35, 35 which rotates in opposite directions, through operation of electromagnetic brakes 33, 33 and electromagnetic clutches 34,
  • the upward and downward movements of the lower vertical yarn inserting device 5 may be synchronized with the movements of the upper vertical yarn inserting means 4. However, the movements of the upper and lower vertical yarn inserting means 4 and 5 may be staggered, if desired.
  • the weft inserting device 6 which functions to'pick the weft yarns into the rows of warp yarns has a construction as described hereinbefore with reference to FIG. 2 and has the weft yarns fed from weft bobbin 36 through a guide member 37.
  • the supporting member 8 of the weft inserting device 6 is mounted such that it is moved toward and away from the warp yarn rows by rotation of a rod screw 38.
  • Horizontal reciprocating movements are imparted to the supporting member of the weft inserting means 6 by a pair of motors which are adapted to rotate in opposite directions, through electromagnetic brakes 40, 40 and electromagnetic clutches 41, 41 in a manner similar to the feedof vertical yarns.
  • the upward and downward movements of the selvage binder threading needle 12 are imparted by rotation of a motor 43 through a screw 42 for threading the binder yarn through the loops formed at the fore ends of the doubled weft yarns.
  • the latch needle 14 is deleted from FIG. 10 for simplicity of illustration. However, it shouldbe noted that the latch needle 14 is reciprocated for catching the binder yarn by means of a eccentric cam member 47 which is rotated by a motor 44 through an electromagnetic brake 45 and electromagnetic clutch 46, and a return spring 48.
  • the reed 1 is moved toward the woven fabric at suitable intervals time for beating the filled-in weft and vertical yarns.
  • the reed 1 alone may be moved by a motor and the like or the carrier 21 supporting the reed 1 thereon may be moved by means of the motor 23 for this purpose.
  • the rows of the warp yarns are described as being fixedly supported in a horizontal position while the carrier 21 is moved for forming the three-dimensional fabric.
  • the carrier 21 is moved for forming the three-dimensional fabric.
  • FIG. 11 shows an example of operation program of the loom mentioned above, wherein the solid lines extending beneath the step numbers show positions, upper and lower or forward and backward, of the various operating parts or components indicated on the lefthand of the respective lines.
  • the line shows the retracting timing in the weaving process.
  • U.V.Y.I.D is upper vertical yarn insetting device
  • L.V.Y.l.D is lower vertical yarn inserting device
  • W.I.D is weft inserting device
  • B.I.N binder inserting needle
  • S.S.L.N is selvage securing latch needle
  • RE is reed
  • CA carrier.
  • a method for weaving a three-dimensional fabric characterized in that said method comprises the steps of:
  • a loom for weaving a three-dimensional fabric comprising;
  • a reed provided at a position where weft and vertical yarns are inserted into said warp yarns for maintaining said warp yarns in vertical and horizontal alignment and movable back and forth in the direction of the warp yarns for beating weft and vertical yarns which have been interwoven;
  • a weft inserting device movable in a direction perpendicular to said warp yarns for inserting weft yarns into spaces between layers of said warp yarns;
  • a binder threading needle for threading a binder yarn into loops at the fore ends of said weft inserting device which are located in the spaces between the respective layers of said warp yarns when said fore ends of said weft inserting device have passed through said warp yarns;
  • a vertical yarn inserting device movable in a direction perpendicular to both said warp and weft yarns and has a first stop position retracted from said warp yarns and a second stop position passed through said warp yarns for allowing insertion of said weft yarns;

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Cited By (30)

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FR2319727A1 (fr) * 1975-07-31 1977-02-25 Commissariat Energie Atomique Procede de tissage de tissus tridimensionnels
US4095619A (en) * 1977-04-11 1978-06-20 Mcdonnell Douglas Corporation Yarn inserting and packing machine
DE2826961A1 (de) * 1977-06-20 1979-01-18 Aerospatiale Verfahren und vorrichtung zur herstellung dreidimensional gewebter hohler umdrehungskoerper
FR2440494A1 (fr) * 1978-11-03 1980-05-30 Aerospatiale Procede de fabrication de couronnes cylindriques a armature tissee tridimensionnelle, notamment de disques de freins, et appareillage destine a sa mise en oeuvre
EP0046120A1 (de) * 1980-08-11 1982-02-17 AEROSPATIALE Société Nationale Industrielle Verfahren und automatische Reihvorrichtung zur Herstellung von Produkten mit mehrachsig gewebter Armierung
US4346741A (en) * 1977-06-20 1982-08-31 Societe Nationale Industrielle Et Aerospatiale Three-dimensional woven articles
FR2564491A1 (fr) * 1984-05-15 1985-11-22 Aerospatiale Machine pour la fabrication en continu par tricotage tridimensionnel de profiles en materiau composite
FR2564490A1 (fr) * 1984-05-15 1985-11-22 Aerospatiale Perfectionnements aux profiles composites tricotes en trois dimensions et procede pour leur fabrication
US4615256A (en) * 1984-03-23 1986-10-07 Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry Method for formation of three-dimensional woven fabric and apparatus therefor
DE3712254C1 (en) * 1987-04-10 1988-08-18 Messerschmitt Boelkow Blohm Process and apparatus for the production of lightweight elements
US4863660A (en) * 1987-03-25 1989-09-05 Aerospatiale Societe Nationale Ind. Process for manufacturing composite reinforcement elements woven in three dimensions
US5085252A (en) * 1990-08-29 1992-02-04 North Carolina State University Method of forming variable cross-sectional shaped three-dimensional fabrics
FR2678291A1 (fr) * 1991-06-28 1992-12-31 Three D Composite Res Kk Metier a tisser tridimensionnel perfectionne du type a tiges et son procede perfectionne de fonctionnement continu.
US5236020A (en) * 1988-02-28 1993-08-17 Mitsubishi Jukogyo Kabushiki Kaisha Profiled cross-section three-dimensional woven fabric
US5270094A (en) * 1991-10-17 1993-12-14 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Three-dimensional fabric with symmetrically arranged warp and bias yarn layers
GB2234533B (en) * 1989-07-25 1994-04-06 Dunlop Ltd Carbon-brake disc
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US5343897A (en) * 1988-02-29 1994-09-06 Mitsubishi Jukogyo Kabushiki Kaisha Profiled cross-section three dimensional woven fabric
DE19709105C1 (de) * 1997-03-06 1998-08-20 Eurocopter Deutschland Vorrichtung zur Herstellung eines Gewebes für ein Schubübertragungselement in Faserverbundbauweise
US5924459A (en) * 1997-06-02 1999-07-20 Evans; Rowland G. Air jet machine and diagonal Z loop fabric pattern for three-dimensional fabric
US6227257B1 (en) * 1997-10-03 2001-05-08 M. Wright & Sons Ltd. Fabrics
US20090025544A1 (en) * 2007-07-27 2009-01-29 Mansour Mohamed 3-D woven fabric and methods for thick preforms
US20110014403A1 (en) * 2009-07-16 2011-01-20 Stoneferry Technology, LLC Method and apparatus of forming integrated multilayer fabrics
US20110165350A1 (en) * 2009-07-16 2011-07-07 Stoneferry Technology, LLC Integrated hollow fabric structure
US20120076962A1 (en) * 2009-07-16 2012-03-29 Sinoma Science & Technology Ltd. Integrated multiaxial articles: method, apparatus and fabrics
WO2013139401A1 (en) 2012-03-23 2013-09-26 Nandan Khokar A 3d fabric and a method and apparatus for producing such a 3d fabric
CN103835057A (zh) * 2014-02-28 2014-06-04 东华大学 一种三维机织织物的制造方法
US20140265020A1 (en) * 2013-03-15 2014-09-18 Jonathan Marc Hollander Methods For Three-Dimensional Weaving Of Composite Preforms And Products With Varying Cross-Sectional Topology
US20160376734A1 (en) * 2015-06-29 2016-12-29 Snecma Yarn take-up system for weaving and a method of weaving a reinforcing fiber structure for composite material parts
US11318710B2 (en) * 2016-07-14 2022-05-03 Mitsubishi Heavy Industries, Ltd. Joined member assembly method and joined member

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JPS5910904B2 (ja) * 1977-05-20 1984-03-12 ヒユ−ズ・エアクラフト・カンパニ− インサイチユ−で形成された繊維と伸縮性マトリツクスから成る有機複合材料
JPS6189352A (ja) * 1984-10-05 1986-05-07 東レ株式会社 三次元織物
US5137058A (en) * 1989-05-26 1992-08-11 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Three dimensional fabric and method for producing the same
US10399709B2 (en) 2008-07-18 2019-09-03 The Boeing Company Method of making a device for controlling stress in joints at cryogenic temperatures
US9453293B2 (en) 2008-07-18 2016-09-27 The Boeing Company Method of making a composite tank having joint with softening strip
US8656571B2 (en) 2008-07-18 2014-02-25 The Boeing Company Strong bonded joints for cryogenic applications
US8974135B2 (en) 2010-07-22 2015-03-10 The Boeing Company Fabric preform insert for a composite tank Y-joint
CN104428578B (zh) * 2012-07-03 2017-07-28 波音公司 具有带有软化带的接头的复合罐及制造该罐的方法

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US2670012A (en) * 1948-10-30 1954-02-23 Voumard Bertrand Paul Means for weaving ribbons, tapes, bands, and the like
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US3749138A (en) * 1969-01-06 1973-07-31 Hitco Thick fabrics

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US2670012A (en) * 1948-10-30 1954-02-23 Voumard Bertrand Paul Means for weaving ribbons, tapes, bands, and the like
US3719212A (en) * 1968-12-31 1973-03-06 C Barter Circular weaving apparatus product and process
US3749138A (en) * 1969-01-06 1973-07-31 Hitco Thick fabrics
US3674058A (en) * 1970-01-20 1972-07-04 John Sellers Loom and woven tape made therefrom

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319727A1 (fr) * 1975-07-31 1977-02-25 Commissariat Energie Atomique Procede de tissage de tissus tridimensionnels
US4095619A (en) * 1977-04-11 1978-06-20 Mcdonnell Douglas Corporation Yarn inserting and packing machine
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Publication number Publication date
JPS4912162A (de) 1974-02-02
JPS5239473B2 (de) 1977-10-05

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