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20 条记录 (耗时 0.025 秒)

    Abrasive and purge compositions and methods of using the same
    3.
    发明授权
    Abrasive and purge compositions and methods of using the same 失效
    磨料和吹扫组合物及其使用方法

    公开(公告)号：US5395456A

    公开(公告)日：1995-03-07

    申请号：US58492

    申请日：1993-05-06

    申请人： Richard L. Abrams ,  Robert J. Opalko

    发明人： Richard L. Abrams ,  Robert J. Opalko

    IPC分类号： B29C33/72 ,  B29C47/08 ,  C08L93/04 ,  C11D3/14 ,  C11D11/00 ,  B08B9/00

    CPC分类号： C11D11/0041 ,  B29C33/722 ,  B29C47/0877 ,  C08L93/04 ,  C11D3/14 ,  B29C47/0009

    摘要： This invention relates to abrasive compositions useful in preparing purge compositions for purging plastics processing equipment comprising: (A-1) at least one abrasive powder comprising a major amount of calcium carbonate; (A-2) at least one organic rosin material; and (A-3) at least one surfactant. The abrasive compositions of the present invention further may comprise at least one viscosity reducing organic diluent. The purging compositions of the present invention comprise (A) a minor amount of the abrasive composition of the invention, and (B) a major amount of at least one polymer or resin. These purging compositions allow fast and effective purging of processing equipment. These compositions may also be reused, i.e., used for more than one purging operation, and they may be recycled by incorporating the used purge composition into a polymer which is identical to or compatible with the polymer (B) of the purge composition. The invention also relates to a method of purging plastics processing equipment utilizing the purging compositions described herein.

    摘要翻译： 本发明涉及可用于制备用于吹扫塑料加工设备的吹扫组合物的磨料组合物，其包括：（A-1）至少一种包含主要量的碳酸钙的磨料粉末; （A-2）至少一种有机松香材料; 和（A-3）至少一种表面活性剂。 本发明的研磨组合物还可包含至少一种降粘有机稀释剂。 本发明的清洗组合物包含（A）少量本发明的研磨组合物，和（B）主要量的至少一种聚合物或树脂。 这些清洗组合物可快速有效地清洗加工设备。 这些组合物也可以重复使用，即用于多于一次的清洗操作，并且它们可以通过将所使用的清洗组合物掺入到与清洗组合物的聚合物（B）相同或相容的聚合物中来再循环。 本发明还涉及一种利用本文所述清洗组合物清洗塑料加工设备的方法。

    Parametric frequency converter
    4.
    发明授权
    Parametric frequency converter 失效
    参数变频器

    公开(公告)号：US4063195A

    公开(公告)日：1977-12-13

    申请号：US670601

    申请日：1976-03-26

    申请人： Richard L. Abrams ,  Amnon Yariv

    发明人： Richard L. Abrams ,  Amnon Yariv

    IPC分类号： G02F1/39 ,  H01S3/22 ,  H03F7/02

    CPC分类号： G02F1/39

    摘要： In the disclosed parametric frequency converter a dc electric field is utilized to remove spatial inversion symmetry of NH.sub.2 D gas molecules contained in a Stark cell. Simultaneous introduction into the Stark cell of a laser beam at a frequency f.sub.1 (e.g., corresponding to about 10.6 .mu.m) and microwaves at a frequency f.sub.2 (e.g., about 4.1 GHz) produces resonantly enhanced parametric mixing of the frequencies f.sub.1 and f.sub.2, resulting in the generation of a laser beam at the difference frequency f.sub.3 = f.sub.1 - f.sub.2.

    摘要翻译： 在公开的参数变频器中，使用直流电场去除包含在斯塔克电池中的NH2D气体分子的空间反演对称性。 以频率f1（例如，对应于约10.6μm）和频率f2（例如，约4.1GHz）的微波同时引入激光束的斯塔克单元产生频率f1和f2的共振增强的参数混合，从而产生 在产生不同频率f3 = f1-f2的激光束。

    Liquid colorant/additive concentrate for incorporation into plastics
    5.
    发明授权
    Liquid colorant/additive concentrate for incorporation into plastics 失效
    液体颜料/添加剂浓缩剂加入塑料

    公开(公告)号：US5157067A

    公开(公告)日：1992-10-20

    申请号：US686033

    申请日：1991-04-16

    申请人： Neil A. Burditt ,  Richard L. Abrams

    发明人： Neil A. Burditt ,  Richard L. Abrams

    IPC分类号： C08J3/22 ,  C08L93/04

    CPC分类号： C08J3/226 ,  C08L93/04 ,  C08J2493/00

    摘要： Liquid concentrates for incorporation into polymeric resins are described that are storage stable and resistant to settling or viscosity changes which comprise:(I) a vehicle comprising:(A) at least one organic rosin material;(B) at least one surfactant; and(II) at least one colrant or additive.The liquid concentrates of the present invention have a body or consistency that allow them to readily flow by gravity and are further characterized by a substantially uniform viscosity. The liquid color concentrates of the present invention also are compatible with a wide variety of plastics and facilitate a reduction in processing deficiencies such as screw-slippage, water carry-over and uneven flow to the pump inlet.

    摘要翻译： 描述了用于结合到聚合物树脂中的液体浓缩物，其是储存稳定的并且耐沉降或粘度变化，其包含：（I）载体，其包含：（A）至少一种有机松香材料; （B）至少一种表面活性剂; 和（II）至少一种混合物或添加剂。 本发明的液体浓缩物具有允许它们容易地通过重力流动的主体或稠度，并且进一步的特征在于基本均匀的粘度。 本发明的液体颜料浓缩物也与各种各样的塑料兼容，并且有助于减少加工缺陷，例如螺杆滑动，水携带和不均匀的流入泵入口。

    Method of making hermetic coaxial cable
    6.
    发明授权
    Method of making hermetic coaxial cable 失效
    制造密封同轴电缆的方法

    公开(公告)号：US4139936A

    公开(公告)日：1979-02-20

    申请号：US813195

    申请日：1977-07-05

    申请人： Richard L. Abrams ,  Douglas A. Pinnow

    发明人： Richard L. Abrams ,  Douglas A. Pinnow

    IPC分类号： H01B13/016 ,  H01B13/22

    CPC分类号： H01B13/016 ,  Y10T29/49123 ,  Y10T29/49986

    摘要： There is described a hermetic coaxial cable particularly adapted to be produced in miniature form and having a completely solid cross section with a solid metal central conductor, a tubular metal outer conductor, and a continuous glass dielectric insulator therebetween.

    摘要翻译： 描述了一种密封同轴电缆，特别适用于以微型形式制造，并且具有与实心金属中心导体，管状金属外部导体和其间的连续玻璃绝缘绝缘体完全固体的截面。

    Synchronous traveling wave electro-optic light pipe modulator
    7.
    发明授权
    Synchronous traveling wave electro-optic light pipe modulator 失效
    同步行波光电光管调制器

    公开(公告)号：US3994566A

    公开(公告)日：1976-11-30

    申请号：US589285

    申请日：1975-06-23

    申请人： James F. Lotspeich ,  Richard L. Abrams

    发明人： James F. Lotspeich ,  Richard L. Abrams

    IPC分类号： G02F1/035 ,  G02B5/23

    CPC分类号： G02F1/0356

    摘要： There is disclosed a synchronous traveling wave electro-optic modulator for ultra-wideband infrared laser communications systems which provides optical waveguiding of the laser beam through an interaction distance which is large relative to the diffraction limit of the laser beam and which affords essentially perfect radio frequency and optical velocity synchronism at a relatively high electrical impedance level by appropriate choice of the design parameters of the device. The device comprises an array of very slender rectangular rods of electro-optic material such as cadmium telluride laid end to end in juxtaposition to form a light pipe for an infrared laser beam. The length to cross-section ratio of the light pipe is many times greater than that which is determined by the diffraction limit and consequently the voltage and power required to achieve a given depth of modulation is substantially reduced. The modulating signal is applied as a synchronous or nearly synchronous traveling wave across two parallel strip electrodes which form a TEM transmission line exhibiting a purely resistive impedance, with matched termination, and a theoretically infinite base bandwith. An appropriate dielectric environment is provided by surrounding members enclosed in electrical shielding. A structural variable or parameter which can be adjusted to achieve a desired signal velocity for a given dielectric environment is w/d, the width of the strip electrodes relative to their separation by the thickness of the electro-optic material.

    摘要翻译： 公开了一种用于超宽带红外激光通信系统的同步行波电光调制器，其通过相对于激光束的衍射极限大的相互作用距离提供激光束的光波导，并提供基本上完美的射频 并通过适当选择设备的设计参数，在较高的电阻抗水平下进行光速同步。 该装置包括一组非常细长的电光材料矩形棒，例如碲化镉，它们以并置方式端对端放置，以形成用于红外激光束的光管。 光管的长度与横截面比是由衍射极限所确定的长度与横截面比，因此实现给定调制深度所需的电压和功率大大降低。 调制信号作为同步或几乎同步的行波施加在两条平行条状电极上，这两条平行条状电极形成了具有纯电阻阻抗的TEM传输线，具有匹配的终止，以及理论上无限的基带。 由围绕电屏蔽的周围构件提供适当的介电环境。 可以调节以达到给定电介质环境的期望信号速度的结构变量或参数是带状电极相对于电离材料厚度的间隔的宽度。

    Spatial encoding of a laser beam by means of a Stark cell modulator
    9.
    发明授权
    Spatial encoding of a laser beam by means of a Stark cell modulator 失效
    通过Stark单元调制器对激光束进行空间编码

    公开(公告)号：US4215324A

    公开(公告)日：1980-07-29

    申请号：US930108

    申请日：1978-08-01

    申请人： Richard L. Abrams ,  David M. Henderson

    发明人： Richard L. Abrams ,  David M. Henderson

    IPC分类号： H04B10/00 ,  F41G7/26 ,  G01C15/00 ,  G01S1/70 ,  G02F1/01 ,  G02F1/17 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H01S3/10

    CPC分类号： F41G7/263 ,  G02F1/174

    摘要： Apparatus for coding a laser beam to provide guidance signals, or the like. In the transmitter, the laser beam traverses two modulators to provide two-dimensional encoding. In the receiver, the detected signals are amplified, frequency-discriminated, and mixed to form guidance signals. The modulator is a modified Stark cell wherein four split longitudinal planar electrodes allow for beam encloding as a function of two frequencies by the process of molecular absorption. Bias and modulating signals applied to the electrodes interact with the molecular absorbing gas and with the beam to encode position information as a function of the specific frequencies. The amplitude of the first encoding frequency varies from a maximum at one edge of the beam, decreasing to a minimum at the opposite edge, and vice versa for the second encoding frequency. The amplitudes of both are equal on beam center. A second embodiment utilizes a pair of internal bias electrodes and four external electrodes to apply bias and modulating signals. The modulator wall is thin for penetration of the modulating signals so as to interact with the beam. A third embodiment utilizes four semicircular disc electrodes transparent to laser light affixed to the cell endcaps to provide both bias and modulation. A gas separates electrodes affixed to the same endcap. The endcaps are oriented such that the gaps are mutually perpendicular to allow for orthogonal encoding of the beam.

    摘要翻译： 用于编码激光束以提供引导信号的装置等。 在发射机中，激光束穿过两个调制器以提供二维编码。 在接收机中，检测到的信号被放大，频率鉴别和混合以形成引导信号。 调制器是一种改进的Stark单元，其中四个分裂的纵向平面电极允许通过分子吸收过程作为两个频率的函数的束包围。 施加到电极的偏置和调制信号与分子吸收气体和光束相互作用，以根据特定频率对位置信息进行编码。 第一编码频率的幅度从波束的一个边缘处的最大值变化，在相对边缘处减小到最小值，对于第二编码频率，反之亦然。 两者的振幅在波束中心相等。 第二实施例利用一对内部偏置电极和四个外部电极来施加偏置和调制信号。 调制器壁对于调制信号的穿透是薄的，以便与光束相互作用。 第三实施例使用四个半透明圆盘电极，透明的激光固定到电池端盖上以提供偏压和调制。 气体分离固定在相同端盖上的电极。 端盖被定向成使得间隙相互垂直以允许波束的正交编码。

    Laser internal coupling modulation arrangement with wire grid polarizer serving as a reflector and coupler
    10.
    发明授权
    Laser internal coupling modulation arrangement with wire grid polarizer serving as a reflector and coupler 失效
    激光内部耦合调制装置，线栅偏振器用作反射器和耦合器

    公开(公告)号：US4104598A

    公开(公告)日：1978-08-01

    申请号：US584788

    申请日：1975-06-09

    申请人： Richard L. Abrams

    发明人： Richard L. Abrams

    IPC分类号： G02B5/30 ,  H01S3/107 ,  H01S3/10

    CPC分类号： G02B5/3058 ,  H01S3/107

    摘要： A laser internal coupling modulation arrangement is disclosed wherein a wire grid polarizer serves as one of the reflectors forming part of the laser optical cavity, as a polarization selector which constrains the laser oscillation to a desired linear polarization, and as an output coupler which couples an orthogonal linearly polarized beam out of the laser optical cavity in response to an amplitude varying modulating signal applied to an electrooptic modulator disposed within the laser optical cavity.

    摘要翻译： 公开了一种激光内部耦合调制装置，其中线栅偏振器用作形成激光光腔的一部分的反射器之一，作为将激光振荡限制到期望的线性偏振的偏振选择器，以及作为输出耦合器 响应于施加到设置在激光光腔内的电光调制器的幅度变化调制信号，激光光腔中的正交线偏振光束。