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20 条记录 (耗时 0.029 秒)

    Poppet member for a control valve
    11.
    发明授权
    Poppet member for a control valve 失效
    控制阀提升阀

    公开(公告)号：US4237770A

    公开(公告)日：1980-12-09

    申请号：US63281

    申请日：1979-08-02

    申请人： Gregory K. Harrison ,  George D. Pope ,  Richard F. Riel ,  Donald A. Kobb ,  Charley T. Kelley ,  David J. Lawrence ,  Donald R. Conn ,  Richard C. Odom

    发明人： Gregory K. Harrison ,  George D. Pope ,  Richard F. Riel ,  Donald A. Kobb ,  Charley T. Kelley ,  David J. Lawrence ,  Donald R. Conn ,  Richard C. Odom

    IPC分类号： B60T13/57 ,  F15B9/10

    CPC分类号： B60T13/57

    摘要： A valve for use in a pressure differentially operated servo-motor to regulate the flow of fluid through a bore in a hub from first and second sources in response to movement of an input member by an operator. The valve has a resilient disc member with a peripheral surface and a central opening. First and second annular ribs symmetrically extend from opposite sides of the disc adjacent the central opening. A spring connected to the input member holds the peripheral surface in sealing engagement with the hub. In a first mode of operation, the spring holds the input member against the first annular rib to allow the fluid from the first source to freely communicate between first and second passages in the hub by way of the bore. In a second mode or operation, the input member moves out of contact with the first rib; however, the internal resiliency of the disc and a pressure differential created across the disc between the first and second sources of fluid moves the first rib into contact with a seat in the hub to inhibit flow communication of and fluid from the first source through the bore while allowing the fluid from the second source to freely flow through the second passage to create the pressure differential from operating the servomotor.

    摘要翻译： 一种用于压力差动伺服电动机的阀，用于响应于操作者的输入构件的运动，调节来自第一和第二源的毂中的孔的流体流动。 阀具有具有外围表面和中心开口的弹性盘件。 第一和第二环形肋从邻近中心开口的盘的相对侧对称地延伸。 连接到输入构件的弹簧保持与轮毂密封接合的周边表面。 在第一操作模式中，弹簧将输入构件保持抵靠第一环形肋，以允许来自第一源的流体通过孔而在毂中的第一和第二通道之间自由连通。 在第二模式或操作中，输入构件与第一肋移动脱离接触; 然而，盘的内部弹性和在第一和第二流体源之间跨越盘产生的压力差使第一肋与毂中的座接触，以阻止与第一源通过孔的流体连通和流体 同时允许来自第二源的流体自由地流过第二通道以产生操作伺服电动机的压力差。

    RAIL GAUGE-PLATE INSULATOR
    12.
    发明申请
    RAIL GAUGE-PLATE INSULATOR 有权

    公开(公告)号：US20160097166A1

    公开(公告)日：2016-04-07

    申请号：US14966150

    申请日：2015-12-11

    申请人： Tom HABEL ,  David J. LAWRENCE ,  Ernest J. ALLISON

    发明人： Tom HABEL ,  David J. LAWRENCE ,  Ernest J. ALLISON

    IPC分类号： E01B9/68

    CPC分类号： E01B9/68 ,  E01B5/16 ,  E01B9/685

    摘要： A gauge-plate insulator for positioning between and mounting to two rail-spacing members that in turn extend transversely between and mount to two parallel rails to mechanically interconnect but electrical insulate the rail-spacing members and thus the parallel rails. The insulator includes a plate, front and rear mounting holes extending vertically through the plate, and a tongue extending downward from the plate along its lateral midsection from front to back. In typical embodiments, the insulator includes elongated platforms surrounding the mounting holes and arranged perpendicular to the tongue, and the insulator is of a one-piece monolithic construction made of a material selected for mechanical strength and electric insulation. And in some embodiments the insulator includes a tented top surface, ribs extending perpendicular to the tongue, and/or multi-level platforms.

    DUAL LEVEL PRESSURIZATION CONTROL BASED ON FUEL FLOW TO ONE OR MORE GAS TURBINE ENGINE SECONDARY FUEL LOADS
    17.
    发明申请
    DUAL LEVEL PRESSURIZATION CONTROL BASED ON FUEL FLOW TO ONE OR MORE GAS TURBINE ENGINE SECONDARY FUEL LOADS 有权
    基于燃油流量的双层压力控制，可以用于一个或多个气体涡轮发动机二次燃料负荷

    公开(公告)号：US20100263634A1

    公开(公告)日：2010-10-21

    申请号：US11850302

    申请日：2007-09-05

    申请人： Paul W. Futa, JR. ,  Gregory A. Lafferty ,  David J. Lawrence ,  David J. Tuttle

    发明人： Paul W. Futa, JR. ,  Gregory A. Lafferty ,  David J. Lawrence ,  David J. Tuttle

    IPC分类号： F02M37/00 ,  F04B49/00 ,  F04B49/06

    CPC分类号： F04B49/06 ,  F02C7/232 ,  F02C7/236

    摘要： A system and method provide dual level pressurization control of a fuel supply system based on whether fuel is being supplied to one or more secondary fuel loads. Fuel pump discharge backpressure is maintained above either a first minimum pressure value or a lower second minimum pressure value by determining whether fuel is being supplied to one or more secondary fuel loads. The fuel pump discharge pressure is maintained above the first minimum pressure value if it is determined that fuel is being supplied to the one or more secondary loads. The fuel pump discharge backpressure is maintained above the lower second minimum pressure value if it is determined that fuel is not being supplied to the one or more secondary loads.

    摘要翻译： 系统和方法基于是否将燃料供应给一个或多个二次燃料负载来提供燃料供应系统的双重级别的加压控制。 通过确定是否向一个或多个二次燃料负载供应燃料，燃料泵排出背压保持在第一最小压力值或较低的第二最小压力值之上。 如果确定燃料被供给到一个或多个二次负载，则燃料泵排出压力保持高于第一最小压力值。 如果确定没有向一个或多个二次负载供应燃料，则燃料泵排出背压保持在较低的第二最小压力值以上。

    NYLON EXTRACTION FROM COMMINGLED MATERIALS
    18.
    发明申请
    NYLON EXTRACTION FROM COMMINGLED MATERIALS 有权
    尼龙从商品材料中提取

    公开(公告)号：US20100228000A1

    公开(公告)日：2010-09-09

    申请号：US12397048

    申请日：2009-03-03

    申请人： Brian J. Waibel ,  Hans Schonemann ,  Val Krukonis ,  David J. Lawrence ,  Joseph N. Caulfield

    发明人： Brian J. Waibel ,  Hans Schonemann ,  Val Krukonis ,  David J. Lawrence ,  Joseph N. Caulfield

    IPC分类号： C08G69/08

    CPC分类号： C08J11/08 ,  C08J2377/04 ,  Y02W30/701

    摘要： The present invention provides energetically and economically efficient methods for separating polyamide polymer(s) from commingled materials. The methods generally involve precipitating a polyamide polymer dissolved in a solvent (e.g., formic acid) using dimethyl ether (DME) as an antisolvent. The methods comprise dissolving the polyamide polymer in a solvent that (i) selectively dissolves the polyamide polymer relative to the other materials and (ii) has a higher solubility for DME relative to the polyamide polymer; and then contacting the mixture of the solvent with the dissolved polyamide polymer with DME, thereby precipitating the polyamide polymer.

    摘要翻译： 本发明提供了用于将聚酰胺聚合物与混合材料分离的能量和经济有效的方法。 所述方法通常涉及使用二甲醚（DME）作为反溶剂使溶解在溶剂（例如甲酸）中的聚酰胺聚合物沉淀。 所述方法包括将聚酰胺聚合物溶解在溶剂中，（i）相对于其它材料选择性地溶解聚酰胺聚合物，和（ii）相对于聚酰胺聚合物具有较高的DME溶解度; 然后将溶剂与溶解的聚酰胺聚合物的混合物与DME接触，从而沉淀聚酰胺聚合物。

    Polymerization reactor
    19.
    发明授权
    Polymerization reactor 失效
    聚合反应器

    公开(公告)号：US5417930A

    公开(公告)日：1995-05-23

    申请号：US263498

    申请日：1994-06-21

    申请人： Michael F. McDonald, Jr. ,  David J. Lawrence ,  Donald A. Williams

    发明人： Michael F. McDonald, Jr. ,  David J. Lawrence ,  Donald A. Williams

    IPC分类号： C08F2/00 ,  B01F7/00 ,  B01F7/22 ,  B01J19/00 ,  B01J19/18 ,  C08F4/06 ,  C08F4/14 ,  C08F210/12 ,  F28F13/06

    CPC分类号： F28F13/06 ,  B01F7/22 ,  B01J19/0013 ,  B01J19/1875 ,  C08F210/12 ,  B01F7/00591 ,  B01J2219/00085

    摘要： A novel chemical reactor: one particularly useful for the production of polymers, especially elastomers such as butyl rubber. The reactor contains (1) a two-tube pass system, constituted of an inner or center tube bundle through which a mixture or slurry of polymerizable monomers and catalyst is passed in one direction, and recycled via an outer tube bundle in the opposite direction in essentially even flow distribution, (2) while the tubes of the center and outer tubular bundles are maintained within a jacketed section, or sections of the reactor into which a coolant, or refrigerant, is injected and vaporized to remove the heat of reaction. The coolant, or refrigerant, in heat exchange relationship with the tubes removes the exothermic heats of reaction from the polymerization mixture, and maintains the polymerization mixture at uniformly low temperature. An even flow circulation of the slurry which aids in maintaining uniform low temperature, is provided by the use of (3) a diffuser and (4) mixed flow pumping system, with its impeller, by virtue of which an adequate pressure head of even pressure profile is developed across the entry sides of the center tubes to maintain the even flow distribution within the two-tube pass system at high circulation rate. There is no vortex whirl at the exit of the impeller-diffuser assembly, and no cavitation bubbles as commonly associated with one-tube pass systems, which employ a central draft tube and axial flow pump. Improved mixing, high hydraulic efficiency, and higher production rates with low polymer fouling, are achieved.

    摘要翻译： 一种新型化学反应器：一种特别适用于生产聚合物，特别是弹性体如丁基橡胶的化学反应器。 反应器包含（1）双管道系统，其由内部或中心管束组成，通过该管束将可聚合单体和催化剂的混合物或浆料沿一个方向通过，并且经由外管束沿相反方向再循环 基本上均匀的流量分布，（2）当中心管和外管束的管保持在夹套部分或反应器的部分中，冷却剂或制冷剂注入并蒸发到其中以除去反应热。 与管的热交换关系的冷却剂或制冷剂从聚合混合物中除去放热的反应热，并将聚合混合物保持在均匀的低温。 通过使用（3）扩散器和（4）具有其叶轮的混合流动泵送系统来提供有助于保持均匀低温的浆料的均匀流动循环，由此具有适当的压力压力头 在中心管的入口侧形成轮廓，以在高循环速率下保持双管道系统内的均匀流量分布。 在叶轮 - 扩散器组件的出口处没有涡流旋转，并且没有通常与单管通过系统相关联的气蚀气泡，其采用中央引流管和轴流泵。 实现了改进的混合，高水力效率和较高的生产率和低聚合物结垢。

    Transparent electrode light emitting diode and method of manufacture
    20.
    发明授权
    Transparent electrode light emitting diode and method of manufacture 失效
    透明电极发光二极管及其制造方法

    公开(公告)号：US4495514A

    公开(公告)日：1985-01-22

    申请号：US517568

    申请日：1983-07-28

    申请人： David J. Lawrence ,  Daniel C. Abbas ,  Daniel J. Phelps ,  Frank T. J. Smith

    发明人： David J. Lawrence ,  Daniel C. Abbas ,  Daniel J. Phelps ,  Frank T. J. Smith

    IPC分类号： H01L33/00 ,  H01L33/42 ,  H01L27/12 ,  H01L23/48 ,  H01L29/40

    CPC分类号： H01L33/42 ,  H01L33/0062

    摘要： An efficient light emitting diode is disclosed wherein the spatial distribution of emitted radiation is highly uniform. In accordance with the present invention, a transparent electrode is used to couple current to the light emitting diode junction in a manner that minimizes the resistance at the interface between the transparent electrode and semiconductor diode material. Specifically, it has been found that the interface resistance is significantly reduced, and device efficiency thus increased, by forming a thin metal-based layer at such interface and/or by annealing the transparent electrode after formation on the device.

    摘要翻译： 公开了一种高效发光二极管，其中所发射的辐射的空间分布是高度均匀的。 根据本发明，透明电极用于以最小化透明电极和半导体二极管材料之间的界面处的电阻的方式将电流耦合到发光二极管结。 具体地，已经发现，通过在器件上形成之后，在这种界面处形成薄金属基层和/或退火透明电极，显着地降低了界面电阻，从而提高了器件效率。