公开(公告)号：US06489006B1

公开(公告)日：2002-12-03

申请号：US09643489

申请日：2000-08-22

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B32B304

CPC classification number: B29D22/02 ,  B29C65/02 ,  B29C66/1122 ,  B29C66/43 ,  B29C66/439 ,  B29C66/71 ,  B29C66/729 ,  B29K2313/00 ,  B29K2995/0067 ,  B29L2022/02 ,  B32B5/26 ,  B32B7/04 ,  B60R21/232 ,  B60R2021/23382 ,  B60R2021/2359 ,  B63C9/1255 ,  B63C9/155 ,  B63C2009/0082 ,  D03D1/02 ,  Y10T428/1334 ,  Y10T428/1345 ,  Y10T428/1362 ,  Y10T428/15 ,  Y10T428/19 ,  Y10T428/193 ,  Y10T428/214 ,  Y10T428/231 ,  Y10T428/239 ,  Y10T428/24033 ,  Y10T428/24174 ,  Y10T428/2419 ,  Y10T428/24207 ,  Y10T428/24215 ,  Y10T428/24223 ,  Y10T428/24256 ,  Y10T442/2139 ,  Y10T442/30 ,  Y10T442/3472 ,  B29K2067/00 ,  B29K2077/00

Abstract: The invention relates to inflatable fabrics which comprise two separated and distinct fabric layers in discrete areas of such fabrics as well as connecting seam-producing materials to which such fabric layers are simultaneously attached. The resultant inflatable fabric composite thus includes inflatable areas separated, at least partially, by seamed barrier areas. This configuration will form “pillowed” structures within the target fabric upon inflation. Such connecting seam-producing materials are incorporated within the two-layer structure as peel seams in relation with the individual fabric layers. Upon inflation, the seams then act as shear seams which greatly increases the overall strength of the two-layer inflatable fabric. These shear seams thus provide a relatively effective manner of reducing air permeability within the entire fabric article. Such a fabric may be utilized in numerous and various applications wherein fabric inflation is desired or necessary. In particular, the inventive fabric may be incorporated within an airbag cushion.

Abstract translation: 本发明涉及可膨胀的织物，其在这种织物的离散区域中包括两个分离的和不同的织物层，以及连接缝合产生材料，这些织物层同时附接到该材料上。 因此，所得到的充气织物复合材料包括至少部分地由缝合的屏障区域分开的充气区域。 这种配置将在充气时在目标织物内形成“枕头”结构。 这种连接缝制造材料作为与单个织物层相关的剥离接缝结合在双层结构内。 在膨胀时，接缝然后用作剪切缝，其大大增加了两层可膨胀织物的总体强度。 因此，这些剪切缝提供了在整个织物制品中降低透气性的相对有效的方式。 这种织物可以用于需要或需要织物充气的许多和各种应用中。 特别地，本发明的织物可以结合在气囊垫内。

公开(公告)号：US06375219B1

公开(公告)日：2002-04-23

申请号：US09364130

申请日：1999-07-30

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B60R2116

Abstract: The present invention relates to an airbag cushion which simultaneously exhibits a very low amount of fabric utilized to produce the target airbag cushion in correlation to an overall high amount of available inflation airspace within the cushion itself. These two correlative elements are now combined for the first time in what is defined as an effective fabric usage index (being the quotient of the amount of fabric utilized in the construction of the airbag cushion and the available inflation airspace volume). The inventive airbag cushion must possess an effective fabric usage factor of at most 0.0330. A cushion exhibiting such low seam usage and fabric usage factors and also comprising an integrated looped pocket for the disposition of an inflator can is also provided as well as an overall vehicle restraint system comprising the inventive airbag cushion.

公开(公告)号：US06364356B1

公开(公告)日：2002-04-02

申请号：US09406000

申请日：1999-09-24

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B60R2116

CPC classification number: B60R21/235 ,  B29C65/02 ,  B29C65/04 ,  B29C65/72 ,  B29C66/1122 ,  B29C66/21 ,  B29C66/232 ,  B29C66/43 ,  B29C66/71 ,  B29C66/7292 ,  B29C66/73921 ,  B29L2022/02 ,  B29L2022/027 ,  B60R2021/23514 ,  B60R2021/23576 ,  B60R2021/2359 ,  B29C65/00 ,  B29K2077/00

Abstract: A method utilizing welds, reinforced with sewn seams, to adhere two fabrics together to form an inflatable airbag cushion. Although welded seams provide better and more easily produced attachment points between multiple layers of fabrics, not to mention improved manners of reducing air or gas permeability as such attachment points, the utilization of sewn seams adjacent to such welded areas provides stronger reinforcement, and thus more reliable non-permeable fabrics. Seam welding generally concerns the utilization of a film on the underside of a fabric which, upon contact with a second, film-treated fabric and upon exposure to high frequency energy, forms a bead of polymeric material at the attachment point between the two fabric layers. Lower numbers of sewn seams may be utilized to permit sufficient reinforcement if the size of the formed polymeric bead if of sufficient size to permit thorough sealing and adhesion between the fabric layers. Such a specific reinforced fabric, as well as high bead-size welded airbag fabrics are encompassed within this invention.

Abstract translation: 一种利用焊缝加固的方法，将两个织物粘合在一起以形成可充气的气囊。 虽然焊缝在多层织物之间提供了更好和更容易制造的附着点，更不用说改善这种连接点降低空气或气体渗透性的方式，但是使用与这种焊接区域相邻的缝合接缝提供更强的加强，因此更多 可靠的不可渗透织物。 接缝焊接通常涉及在织物下侧上的薄膜的利用，其在与第二薄膜处理的织物接触时并且在暴露于高频能量时，在两个织物层之间的附接点处形成聚合物材料珠 。 如果形成的聚合物珠粒的尺寸足够大以允许织物层之间的彻底密封和粘合，则可以使用较少数量的缝合接缝以允许充分的增强。 这种特定的增强织物以及高珠粒度焊接的气囊织物包括在本发明内。

公开(公告)号：US20020027351A1

公开(公告)日：2002-03-07

申请号：US09557444

申请日：2000-04-25

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B60R021/16

CPC classification number: B60R21/231 ,  B60R2021/23509 ,  B60R2021/23514

Abstract: An airbag cushion is provided which simultaneously exhibits a very low amount of fabric, which corresponds to an overall low weight of total fabric, utilized to produce the target airbag cushion in correlation to an overall high amount of available inflation airspace within the cushion itself. These correlative elements are now combined for the first time in what are defined as an effective fabric usage index (being the quotient of the amount of fabric utilized in the construction of the airbag cushion and the available inflation airspace volume) and a fabric weight index (being the quotient of the total weight of fabric utilized in the construction of the airbag cushion and the available inflation airspace volume). The inventive airbag cushion must possess an effective fabric usage factor of at most 0.0330 or an effective fabric weight factor of at most 8.0. A cushion exhibiting either such a low fabric usage or low fabric weight factor, or both, and also comprising an integrated looped pocket for the disposition of an inflator can is also provided as well as an overall vehicle restraint system comprising the inventive airbag cushion.

Abstract translation: 提供了一种气囊垫，其同时呈现非常少量的织物，其对应于总体织物的总体重量，用于与衬垫本身内的总体高量的可用膨胀空间相关地生产目标气囊垫。 这些相关元素现在首次被组合在被定义为有效织物使用指数（作为在安全气囊衬垫的构造中使用的织物量的商数和可用的膨胀空间体积）的商品和织物重量指数（ 是用于构建气囊垫的织物的总重量和可用的膨胀空间体积的商）。 本发明的气囊垫必须具有至多0.0330的有效织物使用系数或至多8.0的有效织物重量系数。 还提供了具有这种低织物使用量或低织物重量因数或两者的衬垫，并且还包括用于设置充气机罐的集成环形袋，以及包括本发明的气囊垫的整体车辆约束系统。

公开(公告)号：US6019390A

公开(公告)日：2000-02-01

申请号：US70428

申请日：1998-04-30

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B60R21/16 ,  B60R21/215

CPC classification number: B60R21/231

Abstract: An airbag cushion for use in a vehicle restraint system is provided. The airbag cushion is formed from two body panel sections of substantially similar straight line geometry which are joined to one another by two substantially straight seams along corresponding lateral boundary edges. The upper boundary edges of the body panels which are not joined to one another are joined around the perimeter of a rectilinear center panel by a series of substantially straight seams. A method of forming the cushion according to the present invention is also provided.

Abstract translation: 提供一种用于车辆约束系统的气囊垫。 气囊垫由基本上相似的直线几何形状的两个主体板部分形成，它们通过沿对应的横向边界边缘的两个基本上直的接缝彼此接合。 通过一系列基本上直的接缝，不连接的车身板的上边界边缘围绕直线中心面板的周边连接。 还提供了一种形成根据本发明的衬垫的方法。

公开(公告)号：US5931498A

公开(公告)日：1999-08-03

申请号：US996620

申请日：1997-12-23

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B60R21/16 ,  B60R21/231 ,  B60R21/235 ,  B60R21/237 ,  D03D1/02

CPC classification number: B60R21/231 ,  B60R21/237 ,  B60R2021/23509 ,  B60R21/235

Abstract: An inflatable restraint cushion for use in transportation passive restraint systems is provided. The inflatable restraint cushion according to the invention is of a foldable construction having two panels. The first panel is of generally a pyramidal configuration while the second panel is of an elongated rectangular configuration joined to and extending from the apex of the first panel. The first panel is divided into right and left segments along a center fold line. The right and left segments each contain corresponding depressed sections. The right and left segments of the base are folded towards one another and are seamed together. The second panel is thereafter folded in loop fashion towards the first panel and a single seam is used to join the mating edges of the first and second panels. The presence of the depressed sections results in a cushion configuration having a depressed lower profile which is capable of engulfing the instrument panel of the vehicle.

Abstract translation: 提供一种用于运输被动约束系统的充气约束垫。 根据本发明的充气式约束衬垫是具有两个面板的折叠结构。 第一面板通常是金字塔形构造，而第二面板是与第一面板的顶点接合并从第一面板的顶点延伸的细长的矩形构造。 第一个面板沿着中心折叠线分为左右段。 右侧和左侧的区段都包含相应的凹陷部分。 基部的右侧和左侧部分彼此折叠并缝合在一起。 然后，第二面板以环形方式朝向第一面板折叠，并且使用单个接缝来连接第一和第二面板的配合边缘。 凹陷部分的存在导致具有凹陷的下部轮廓的缓冲结构，其能够吞没车辆的仪表板。

公开(公告)号：US5897929A

公开(公告)日：1999-04-27

申请号：US980926

申请日：1997-12-01

Applicant: Shu Long Li ,  Robert C. Arnott ,  Ramesh Keshavaraj

Inventor： Shu Long Li ,  Robert C. Arnott ,  Ramesh Keshavaraj

IPC: B60R21/16 ,  B60R21/235 ,  D03D15/00 ,  D06M15/693 ,  D06N3/10 ,  D06N3/12 ,  D06N3/14 ,  B29D22/00

CPC classification number: B60R21/235 ,  D03D1/02 ,  D03D15/00 ,  D03D15/12 ,  D06M15/693 ,  D06N3/10 ,  D06N3/125 ,  D06N3/14 ,  B60R2021/23514 ,  D10B2331/02 ,  D10B2331/04 ,  D10B2401/10 ,  D10B2505/124 ,  Y10T428/1362 ,  Y10T442/2893 ,  Y10T442/3366

Abstract: A coated base fabric for use in an automotive airbag is provided. The coated base fabric includes a substrate of woven nylon or polyester which is overcoated with a porosity blocking layer of polyamide material. The porosity blocking layer of polyamide material is present at a level of about 0.6 ounces per square yard or less. A method for producing the coated fabric of the present invention is also provided.

Abstract translation: 提供了一种用于汽车安全气囊的涂布底布。 涂覆的基底织物包括编织尼龙或聚酯的基底，其被覆盖有聚酰胺材料的孔隙阻挡层。 聚酰胺材料的孔隙率阻挡层以约0.6盎司/平方码或更低的水平存在。 还提供了本发明的涂布织物的制造方法。

公开(公告)号：US08007630B1

公开(公告)日：2011-08-30

申请号：US13099711

申请日：2011-05-03

Applicant: Ramesh Keshavaraj ,  Dany F. Michiels

Inventor： Ramesh Keshavaraj ,  Dany F. Michiels

IPC: C09J5/02

CPC classification number: B60R21/235 ,  B60R2021/23514 ,  Y10T428/1352 ,  Y10T428/1359 ,  Y10T428/1362 ,  Y10T428/1379 ,  Y10T428/31725 ,  Y10T428/31779 ,  Y10T442/2139

Abstract: An inflatable automotive protective cushion and method of formation. The protective cushion includes a multilayer film coating with an adhesive layer and an overlying barrier layer. The adhesive layer is adapted to bond to a textile substrate and the barrier layer is adapted to block air permeability.

Abstract translation: 一种充气汽车保护垫及其形成方法。 保护垫包括具有粘合剂层和上覆阻挡层的多层膜涂层。 粘合剂层适于结合到织物基底，并且阻挡层适于阻挡透气性。

公开(公告)号：US07951437B2

公开(公告)日：2011-05-31

申请号：US11525303

申请日：2006-09-22

Applicant: Ramesh Keshavaraj ,  Dany F. Michiels

Inventor： Ramesh Keshavaraj ,  Dany F. Michiels

IPC: B29D22/00 ,  B29D23/00 ,  B32B1/08

CPC classification number: B60R21/235 ,  B60R2021/23514 ,  Y10T428/1352 ,  Y10T428/1359 ,  Y10T428/1362 ,  Y10T428/1379 ,  Y10T428/31725 ,  Y10T428/31779 ,  Y10T442/2139

Abstract: An inflatable automotive protective cushion and method of formation. The protective cushion includes a multilayer film coating with an adhesive layer and an overlying barrier layer. The adhesive layer is adapted to bond to a textile substrate and the barrier layer is adapted to block air permeability.

Abstract translation: 一种充气汽车保护垫及其形成方法。 保护垫包括具有粘合剂层和上覆阻挡层的多层膜涂层。 粘合剂层适于结合到织物基底，并且阻挡层适于阻挡透气性。

公开(公告)号：US07737059B1

公开(公告)日：2010-06-15

申请号：US12388934

申请日：2009-02-19

Applicant: Ramesh Keshavaraj

Inventor： Ramesh Keshavaraj

IPC: B32B5/18

CPC classification number: B60R21/235 ,  B60R2021/23514 ,  C09D175/00 ,  Y10T442/3366

Abstract: Coating compositions, which are used as a monolithic coating layer for airbags. The coating compositions include a combination of urethanes which are blended together. At least one of the urethane components provides gas-retaining properties and the other provides the aging stability. The gas-retaining urethane may be characterized as having high tensile strength at break, high elongation at break, and a 100% modulus less than 1,200 psi. The aging stability urethane has a polycarbonate backbone as result of a manufacturing process in which a polycarbonate diol is reacted with an isocyanate. The resulting coating compositions, when applied as a single layer to an airbag fabric, result in an airbag with good gas retention and aging stability.

Abstract translation: 涂料组合物，用作安全气囊的整体涂层。 涂料组合物包括混合在一起的聚氨酯的组合。 至少一种聚氨酯组分提供气体保持性质，另一种提供了老化稳定性。 气体保留氨基甲酸酯的特征在于具有高断裂拉伸强度，高断裂伸长率和小于1,200psi的100％模量。 老化稳定性聚氨酯由聚碳酸酯二醇与异氰酸酯反应的制造方法得到聚碳酸酯骨架。 所得到的涂料组合物当作为气囊织物单层使用时，导致气囊保持性和老化稳定性良好的气囊。