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10 条记录 (耗时 0.018 秒)

    Transparent pressure bladder
    1.
    发明授权
    Transparent pressure bladder 有权
    透气压膀胱

    公开(公告)号：US06486433B2

    公开(公告)日：2002-11-26

    申请号：US09759292

    申请日：2001-01-11

    申请人： David Grewell ,  Donald C. Lovett

    发明人： David Grewell ,  Donald C. Lovett

    IPC分类号： B23K2600

    CPC分类号： B29C65/148 ,  B23K26/702 ,  B29C65/1435 ,  B29C65/1477 ,  B29C65/1635 ,  B29C65/1664 ,  B29C65/1667 ,  B29C65/1674 ,  B29C65/1677 ,  B29C65/168 ,  B29C66/1122 ,  B29C66/3494 ,  B29C66/41 ,  B29C66/43 ,  B29C66/439 ,  B29C66/71 ,  B29C66/73921 ,  B29C66/81267 ,  B29C66/81455 ,  B29C66/8181 ,  B29C66/952 ,  B29K2069/00

    摘要： An inflatable bladder system for applying generally uniform pressure to parts being welded to insure proper contact at the welding interface includes a first sheet that is generally transparent to electromagnetic radiation to allow such radiation to pass therethrough. This electromagnetic radiation serves to heat the parts to a temperature sufficient to create a weld. The inflatable bladder also includes a second sheet that is also generally transparent to electromagnetic radiation. The second sheet is coupled to the first sheet to create a sealed volume therebetween. Fluid is selectively introduced into the sealed volume in order to expand the bladder into engagement with the parts being welded to exert a generally uniform pressure thereon.

    摘要翻译： 用于对被焊接的部件施加大致均匀的压力以确保焊接界面处的适当接触的可充气囊系统包括对电磁辐射通常允许这种辐射通过的第一片。 该电磁辐射用于将部件加热至足以产生焊缝的温度。 可膨胀气囊还包括也对电磁辐射通常也是透明的第二片。 第二片联接到第一片以在它们之间形成密封体积。 将流体选择性地引入密封体积中，以便将囊膨胀成与待焊接的部件接合以在其上施加大致均匀的压力。

    Depolymerization of polylactic acid
    2.
    发明授权
    Depolymerization of polylactic acid 有权
    聚乳酸的解聚

    公开(公告)号：US08895778B2

    公开(公告)日：2014-11-25

    申请号：US13357442

    申请日：2012-01-24

    申请人： Gowrishankar Srinivasan ,  David Grewell

    发明人： Gowrishankar Srinivasan ,  David Grewell

    IPC分类号： C07C51/42 ,  C07C51/41 ,  C07C51/09

    CPC分类号： C07C51/09 ,  C07C51/412 ,  C07C59/08

    摘要： The invention provides energy efficient depolymerization of polyesters such as post-consumer polylactic acid. Ultrasonic induced implosions can be used to facilitate the depolymerization. The expanding market of polylactic acid-based plastic products, such as water bottles and packaging materials, has raised concerns of contaminating the recycling stream, which is largely filled with petroleum-based plastics. Thus the development of an energy efficient and economically viable PLA recycling process is urgently needed. Post consumer PLA was exposed to methanol as the suspension media in the presence of organic or ionic salts of alkali metals such a potassium carbonate and sodium hydroxide as depolymerization catalysts to provide high quality lactic acid monomers in high yield.

    摘要翻译： 本发明提供了聚酯如消费后聚乳酸的能量有效解聚。 可以使用超声诱导内爆来促进解聚。 聚乳酸类塑料制品（如水瓶和包装材料）的不断扩大的市场已经引起人们的关注，污染了大部分石油基塑料的回收利用。 因此，迫切需要开发节能和经济可行的PLA回收过程。 消费者PLA在作为解聚催化剂的碱金属如碳酸钾和氢氧化钠的有机或离子盐存在下作为悬浮介质暴露于甲醇，以高产率提供高质量的乳酸单体。

    DEPOLYMERIZATION OF POLYLACTIC ACID
    3.
    发明申请
    DEPOLYMERIZATION OF POLYLACTIC ACID 有权
    多羟基酸的分解

    公开(公告)号：US20130096342A1

    公开(公告)日：2013-04-18

    申请号：US13357442

    申请日：2012-01-24

    申请人： Gowrishankar Srinivasan ,  David Grewell

    发明人： Gowrishankar Srinivasan ,  David Grewell

    IPC分类号： C07C51/347 ,  C07C59/08

    CPC分类号： C07C51/09 ,  C07C51/412 ,  C07C59/08

    摘要： The invention provides energy efficient depolymerization of polyesters such as post-consumer polylactic acid. Ultrasonic induced implosions can be used to facilitate the depolymerization. The expanding market of polylactic acid-based plastic products, such as water bottles and packaging materials, has raised concerns of contaminating the recycling stream, which is largely filled with petroleum-based plastics. Thus the development of an energy efficient and economically viable PLA recycling process is urgently needed. Post consumer PLA was exposed to methanol as the suspension media in the presence of organic or ionic salts of alkali metals such a potassium carbonate and sodium hydroxide as depolymerization catalysts to provide high quality lactic acid monomers in high yield.

    摘要翻译： 本发明提供了聚酯如消费后聚乳酸的能量有效解聚。 可以使用超声诱导内爆来促进解聚。 聚乳酸类塑料制品（如水瓶和包装材料）的不断扩大的市场已经引起人们的关注，污染了大部分石油基塑料的回收利用。 因此，迫切需要开发节能和经济可行的PLA回收过程。 消费者PLA在作为解聚催化剂的碱金属如碳酸钾和氢氧化钠的有机或离子盐存在下作为悬浮介质暴露于甲醇，以高产率提供高质量的乳酸单体。

    Soy based spray coating
    5.
    发明申请
    Soy based spray coating 审中-公开
    大豆基喷涂

    公开(公告)号：US20120321808A1

    公开(公告)日：2012-12-20

    申请号：US13507250

    申请日：2012-06-14

    申请人： Roy D. Taylor ,  David Grewell ,  Maria Baboi

    发明人： Roy D. Taylor ,  David Grewell ,  Maria Baboi

    IPC分类号： C09D189/00 ,  B05D1/18 ,  B05D1/02

    CPC分类号： C08H1/00 ,  C09D189/00 ,  C08K5/0016 ,  C08K5/0025 ,  C08K5/053

    摘要： A coating having source from plant protein that is water insoluble and sprayable. The coating is derived from soy protein or other plants and consists of chemistries that promote water stability and insolubility in water. The spraying device for such coating is an aerosol pressure driven system or similar. The coating converts from a liquid to a solid after a length of time which can be accelerated through heating.

    摘要翻译： 来自植物蛋白质的来源为水不溶性且可喷雾的涂层。 该涂层衍生自大豆蛋白或其他植物，并由促进水中稳定性和不溶性的化学物质组成。 用于这种涂层的喷涂装置是气溶胶压力驱动系统或类似物。 涂层在经过加热可以加速的一段时间后从液体转变成固体。

    Distance mode control for laser welding
    7.
    发明授权
    Distance mode control for laser welding 有权
    激光焊接距离模式控制

    公开(公告)号：US06329629B1

    公开(公告)日：2001-12-11

    申请号：US09560220

    申请日：2000-04-28

    申请人： David Grewell

    发明人： David Grewell

    IPC分类号： B23K2620

    CPC分类号： B29C65/72 ,  B23K26/034 ,  B29C65/10 ,  B29C65/16 ,  B29C65/1616 ,  B29C65/1629 ,  B29C65/1632 ,  B29C65/1635 ,  B29C65/1664 ,  B29C65/1674 ,  B29C65/1687 ,  B29C65/606 ,  B29C66/43 ,  B29C66/73921 ,  B29C66/81267 ,  B29C66/81423 ,  B29C66/8322 ,  B29C66/91 ,  B29C66/9231 ,  B29C66/9241 ,  B29C66/92431 ,  B29C66/944 ,  B29C66/961 ,  B29C66/963 ,  B29K2995/0027

    摘要： A laser joining system deforms a workpiece projection based on collapse of the projection to a predetermined displacement. The laser joining system has a laser system for generating a predetermined level of laser radiation based on radiation control signals. An actuation system directs the laser radiation to the projection and contacts the projection with a laser head based on forced control signals. The actuation system also generates position feedback based on a position of the laser head, wherein the position feedback includes a reference position of the laser head. The joining system further includes a controller communicating with the laser system and the actuation system. The controller generates the radiation control signals and the force control signals based on the position feedback. When the projection collapses to a predetermined displacement with respect to the referenced position, one of the radiation control signals causes the laser system to discontinue generation of the laser radiation. Controlling laser radiation on the basis of collapse distance allows improved consistency and reduced rework costs.

    摘要翻译： 激光接合系统基于突起的塌缩使工件突起变形到预定位移。 激光接合系统具有用于基于辐射控制信号产生预定水平的激光辐射的激光系统。 致动系统将激光辐射引导到突起并且基于强制控制信号用激光头接触投影。 致动系统还基于激光头的位置产生位置反馈，其中位置反馈包括激光头的参考位置。 连接系统还包括与激光系统和致动系统通信的控制器。 控制器根据位置反馈产生辐射控制信号和力控制信号。 当突起相对于参考位置折叠到预定位移时，辐射控制信号之一导致激光系统停止产生激光辐射。 基于崩溃距离控制激光辐射可以提高一致性并降低返工成本。

    Ultrasonic Welding Using Amplitude Profiling
    10.
    发明申请
    Ultrasonic Welding Using Amplitude Profiling 审中-公开
    超声波焊接使用振幅分析

    公开(公告)号：US20080054051A1

    公开(公告)日：2008-03-06

    申请号：US11837702

    申请日：2007-08-13

    申请人： James Sheehan ,  David Grewell

    发明人： James Sheehan ,  David Grewell

    IPC分类号： B23K1/06

    CPC分类号： B23K20/10

    摘要： An ultrasonic welding apparatus has a power supply coupled to a weld stack. The weld stack has an ultrasonic transducer coupled to a horn by a booster. The horn has a horn tip. The weld cycle of the ultrasonic welding apparatus is amplitude profiled so that during an initial period, the weld amplitude at the horn tip is high and after the initial period, the weld amplitude is low.

    摘要翻译： 超声波焊接设备具有耦合到焊接堆叠的电源。 焊接堆叠具有通过助力器耦合到喇叭的超声波换能器。 喇叭有喇叭尖。 超声波焊接装置的焊接周期为振幅轮廓，使得在初始阶段，喇叭尖端处的焊接振幅较大，在初始阶段之后，焊接振幅较低。