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71. 发明授权

US5932095A Multi-chambered supercritical fluid extraction cartridge 失效
标题翻译：多室超临界流体萃取筒
公开(公告)号：US5932095A
公开(公告)日：1999-08-03
申请号：US609345
申请日：1996-03-01
申请人： Henry Walters , Dale Messer , Dale Clay , Robert W. Allington
发明人： Henry Walters , Dale Messer , Dale Clay , Robert W. Allington
IPC分类号： G01N1/10 , B01D11/00 , B01D11/02 , B01D11/04 , F04B9/04 , F04B15/08 , F04B49/06 , F16K15/18 , G01F1/34 , G01N1/34 , G01N1/40 , G01N30/00 , G01N30/02 , G01N30/28 , G01N30/60 , G01N33/28 , G01N35/04 , G21F5/015 , B01D35/00
CPC分类号： F04B9/042 , B01D11/0203 , B01D11/0407 , F04B15/08 , F04B49/065 , F16K15/183 , G01F1/34 , G01N1/34 , G01N1/40 , G01N30/28 , G21F5/015 , F04B2205/03 , F04B2205/05 , F04B2205/09 , F05B2230/41 , F05C2201/0493 , F05C2253/12 , G01N2001/4033 , G01N2001/4061 , G01N2030/009 , G01N2030/6013 , G01N2035/0441 , G01N30/02 , G01N30/6034 , G01N30/6069 , G01N30/6091
摘要： A multiple chamber sample holding cartridge is used with a supercritical fluid extractor that causes membranes dividing the cartridge into chambers to rupture upon the pressurization of the sample cartridge, thereby allowing the intermixing of materials contained in the chambers. The neutral oil and loss determination of soybean and other oilseed oils by supercritical fluid extraction is efficient with this two-chambered sample cartridge.
摘要翻译：多室样品保持盒与超临界流体萃取器一起使用，其导致膜在将样品盒加压时将盒分解成室以破裂，从而允许包含在室中的材料的混合。通过超临界流体萃取，大豆和其他油籽油的中性油和损失测定对于这种两室样品盒是有效的。

72. 发明授权

US5750027A Apparatus and method for supercritical fluid extraction or supercritical fluid chromatography 失效
公开(公告)号：US5750027A
公开(公告)日：1998-05-12
申请号：US804682
申请日：1997-02-25
申请人： Robert W. Allington , Henry LeRoy Walters , Daniel Gene Jameson , Yoossef Tehrani
发明人： Robert W. Allington , Henry LeRoy Walters , Daniel Gene Jameson , Yoossef Tehrani
IPC分类号： B01D11/02 , B01D11/04 , F04B9/04 , F04B15/08 , F04B49/06 , F16K15/18 , G01F1/34 , G01N1/34 , G01N1/40 , G01N30/02 , G01N30/28 , G01N30/32 , G01N30/60 , G01N30/82 , G01N35/04 , G21F5/015
CPC分类号： B01D11/0407 , B01D11/0203 , F04B15/08 , F04B49/065 , F04B9/042 , F16K15/183 , G01F1/34 , G01N1/34 , G01N1/40 , G01N30/28 , G01N30/82 , G21F5/015 , F04B2205/03 , F04B2205/05 , F04B2205/09 , F05B2230/41 , F05C2201/0493 , F05C2253/12 , G01N2001/4033 , G01N2001/4061 , G01N2030/6008 , G01N2030/6013 , G01N2035/0441 , G01N30/02 , G01N30/32 , G01N30/60
摘要： A variable-orifice fluid restrictor for use with a supercritical extractor or chromatograph includes an inlet line for fluid at a pressure above its critical pressure, an extended tubular probe having an inner and an outer surface and a proximal and a distal end. The proximal end of the probe is disposed toward the inlet line. The distal end of the probe includes an adjustable orifice means adapted for metering the fluid and having first and second orifice members and an adjusting stem having first and second ends. The adjustable orifice means is adjacent to the outer surface of the probe and the orifice means is adjustable with the adjusting stem. The end of the adjusting stem is located at the distal end of the probe and is adapted for moving the first orifice member with respect to the second orifice member to control the adjustable orifice for varying the restriction of fluid passing through the adjustable orifice.

73. 发明授权

US5354440A Capillary electrophoresis technique 失效
标题翻译：毛细管电泳技术
公开(公告)号：US5354440A
公开(公告)日：1994-10-11
申请号：US277566
申请日：1988-11-29
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： G01N27/447 , G01N27/26
CPC分类号： G01N27/44782 , G01N27/44721 , G01N27/44743
摘要： To detect bands in an electrophoresis capillary tube having a liquid separating medium, a light source and a light detector of a monitor are positioned on opposite sides of the capillary tube with the light source transmitting light through a first slit and light passing to the detector through a second slit after it has passed through the capillary tube. The first and second slits are aligned with the direction of motion of bands, have a maximum length of less than 500 micrometers and a maximum width of less than 200 micrometers. There are no vertical lengths in the capillary tube having a dimension greater than one third of its length between a sample injecting end and a detecting end of the capillary tube. A sample injector includes a vacuum chamber communicating with one end of the capillary tube to pull sample into the other end and a pressure sensor to measure the pressure in said vacuum chamber and generate a signal indicative thereof and integrate it to indicate the amount of sample pulled into the system.
摘要翻译：为了检测具有液体分离介质的电泳毛细管中的条带，将监测器的光源和光检测器定位在毛细管的相对侧上，其中光源透过第一狭缝透射光并将光通过检测器通过在其通过毛细管之后的第二狭缝。第一和第二狭缝与带的运动方向对准，具有小于500微米的最大长度和小于200微米的最大宽度。在毛细管中没有垂直长度，其长度大于样品注射端和毛细管的检测端之间的长度的三分之一。样品注射器包括与毛细管的一端连通以将样品拉入另一端的真空室和用于测量所述真空室中的压力的压力传感器，并产生指示其的信号并将其整合以指示拉出的样品量进入系统。

74. 发明授权

US5336383A Pulsed field gel electrophoresis of large DNA 失效
标题翻译：大DNA的脉冲场凝胶电泳
公开(公告)号：US5336383A
公开(公告)日：1994-08-09
申请号：US495899
申请日：1990-03-15
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： G01N33/50 , G01N27/447 , G01N27/26
CPC分类号： G01N27/44773
摘要： To separate high-molecular DNA strands, an electrophoresis system includes first means for changing the direction of an electric field within an electrophoresis separating unit at a first frequency having a period of no more than 20 seconds and second means for changing the electric field in another manner at a second frequency at least twice as high as the said first frequency. In one embodiment, the field strength in the direction of overall migration is selected so that, considering the DNA size and gel density, the leading segment of DNA to the first corner is sufficiently small so that excess friction forces due to bunching does not cause excessive band spreading. The field strength is selected so that the electric field is reduced until the changing of the electric field at the second frequency keeps the bunching effect to a sufficiently low level to not seriously interfere with the separation.
摘要翻译：为了分离高分子DNA链，电泳系统包括用于以不超过20秒的周期改变电泳分离单元内的电场方向的第一装置和用于改变另一个的电场的第二装置方式在第二频率下至少是所述第一频率的两倍。在一个实施方案中，选择总体迁移方向的场强，使得考虑到DNA尺寸和凝胶密度，到第一角的DNA的前导部分足够小，使得由于聚束引起的过量摩擦力不会引起过量频段扩展。选择场强，使得电场减小，直到第二频率的电场的变化将聚束效应保持在足够低的水平，以不严重干扰分离。

75. 发明授权

US4986919A Chromatographic pumping method 失效
标题翻译：色谱抽取法
公开(公告)号：US4986919A
公开(公告)日：1991-01-22
申请号：US355683
申请日：1989-05-22
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： F04B49/06 , G01N30/32
CPC分类号： G01N30/32 , F04B49/065 , G01N2030/326
摘要： To provide smooth constant flow from a pump, a chromatographic system comprises: a chromatographic column having an inlet; a pump for supplying fluid to the inlet of the chromatographic column; a power means for the pump motor; positive and negative feedback loop means for controlling said power means; means for energizing and de-energizing said positive and negative feedback control means; said negative feedback control means receiving a signal from said means for measuring flow rate and including means for comparing said signal with said corrected flow rate reference signal while said second feedback loop is energized to generate an error signal controlling said power means; and said positive feedback control means applying an acceleration voltage to said motor from a time a preset period after the initiation of a return stroke of said piston until after a timed duration.
摘要翻译：为了从泵提供平稳的恒定流量，色谱系统包括：具有入口的色谱柱; 用于将液体供应到色谱柱的入口的泵; 用于泵马达的动力装置; 用于控制所述功率装置的正和负反馈回路装置; 用于对所述正和负反馈控制装置通电和断电的装置; 所述负反馈控制装置接收来自所述用于测量流量的装置的信号，并且包括用于在所述第二反馈回路通电时将所述信号与所述校正的流量参考信号进行比较的装置，以产生控制所述功率装置的误差信号; 并且所述正反馈控制装置从所述活塞的返回冲程开始到定时持续时间之后的预定时段的时间向所述电动机施加加速电压。

76. 发明授权

US4863592A Apparatus for reducing tailing in a liquid chromatograph 失效
标题翻译：用于在液相色谱仪中减少拖尾的装置
公开(公告)号：US4863592A
公开(公告)日：1989-09-05
申请号：US117371
申请日：1987-10-28
申请人： Robert W. Allington , Abolghassem Y. Tehrani , John N. Jones
发明人： Robert W. Allington , Abolghassem Y. Tehrani , John N. Jones
IPC分类号： B01D15/08 , G01N30/60 , G01N30/74
CPC分类号： G01N30/603 , B01D15/08 , G01N30/6017 , G01N30/6026 , G01N30/6052 , G01N30/74
摘要： To reduce tailing, the frit at the outlet to the liquid chromatographic column has a diameter substantially equal to that of the inside diameter of the outlet end of the column and less than two millimeters. It is held directly against the packing of the column within a cylindrical member having a shoulder with a central aperture at least the size of the diameter of the frit and cylindrical walls which are fastened to resist force in the direction of the axis of the column from its inlet to its outlet. A gasket seals the cylindrical holder against the column wall. The frit is formed of gold-plated nickel spheres sintered together at a temperature lower than the gold-nickel eutectic temperature of 950 degrees Celsius but above the phase-immiscibility temperature of 720 degrees Celsius. The size and shape of the frit is selected to reduce tailing by causing the flow path from the column to be uniform.
摘要翻译：为了减少拖尾，液相色谱柱出口处的玻璃料的直径基本上等于柱的出口端的内径，直径小于2毫米。它被直接抵靠在具有肩部的圆柱形构件的圆柱形构件中，所述圆柱形构件具有至少具有中心孔的至少大小的玻璃料和圆柱形壁的直径的尺寸，所述玻璃料和圆柱形壁被紧固以抵抗在柱的轴线方向上的力其入口到其出口。垫圈将柱形保持器密封在柱壁上。玻璃料由在950℃以下的金 - 镍共晶温度下高于720℃的相互不混溶温度的温度下烧结在一起的镀金镍球形成。选择玻璃料的尺寸和形状以通过使来自塔的流动路径均匀来减少拖尾。

77. 发明授权

US4772388A Apparatus for liquid chromatography 失效
标题翻译：液相色谱装置
公开(公告)号：US4772388A
公开(公告)日：1988-09-20
申请号：US415471
申请日：1982-09-07
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： G01N30/32 , B01D15/08
CPC分类号： G01N30/32 , G01N2030/326
摘要： To stabilize flow rate in a single-stroke, syringe-type high pressure pump to a constant value after turn-on, a control system increases the pump speed until equilibrium conditions are reached and then pumps at the preset rate. In one embodiment, the control system senses the maximum rate of change of pressure, detects a pressure when the rate of change is two-thirds of the maximum, increases the pump rate until the pressure is three times that at the value of the detected pressure and begins pumping at the preset constant flow rate.In other embodiments: (1) a pumping system is operated at a flow rate ten times the preset flow rate and, when the time derivative of the pressure has dropped to nine tenths of its maximum, the pump motor speed is reduced to the preset flow rate; (2) the outflow of the column is measured under no load conditions at the desired flow rate and when a column is connected, the pumping speed is increased until the same outflow results before reducing the pumping rate, and (3) the system is operated in a constant pressure mode to a point at which the pressure is estimated to provide the desired flow rate, the flow rate measured, and if the flow rate is not the preset one, a new pressure measurement is set and the procedure repeated.
摘要翻译：为了将单冲程注射器式高压泵的流量稳定在恒定值，启动后，控制系统会提高泵的转速，直到达到平衡条件，然后以预设的速率泵送。在一个实施例中，控制系统感测压力的最大变化率，当变化率是最大值的三分之二时检测压力，增加泵速，直到压力是检测压力值的三倍并以预设的恒定流速开始泵送。在其他实施例中：（1）泵送系统以预设流量的十倍的流速操作，并且当压力的时间导数已经下降到其最大值的十分之一时，泵电机速度降低到预设流量率; （2）在无负载条件下以期望的流量测量柱的流出，并且当连接柱时，泵送速度增加，直到在降低泵送速率之前产生相同的流出，并且（3）系统被操作在恒定压力模式下，估计压力以提供所需流量，测量流量，如果流量不是预设流量，则设置新的压力测量并重复该过程。

78. 发明授权

US4759843A Apparatus for reducing tailing in a liquid chromatograph 失效
公开(公告)号：US4759843A
公开(公告)日：1988-07-26
申请号：US104422
申请日：1987-10-05
申请人： Robert W. Allington , Abolghassem Y. Tehrani , John N. Jones
发明人： Robert W. Allington , Abolghassem Y. Tehrani , John N. Jones
IPC分类号： B01D15/08 , B01D15/22 , G01N30/60 , G01N30/74
CPC分类号： B01D15/22 , G01N30/603 , G01N30/6017 , G01N30/6026 , G01N30/6052 , G01N30/74
摘要： To reduce tailing, the frit at the outlet to the liquid chromatographic column has a diameter substantially equal to that of the inside diameter of the outlet end of the column and less than two millimeters. It is held directly against the packing of the column within a cylindrical member having a shoulder with a central aperture at least the size of the diameter of the frit and cylindrical walls which are fastened to resist force in the direction of the axis of the column from its inlet to its outlet. A gasket seals the cylindrical holder against the column wall. The frit is formed of gold-plated nickel spheres sintered together at a temperature lower than the gold-nickel eutectic temperature of 950 degrees Celsius but above the phase-immiscibility temperature of 720 degrees Celsius. The size and shape of the frit is selected to reduce tailing by causing the flow path from the column to be uniform.

79. 发明授权

US4709190A Method for operating an absorbance monitor 失效
标题翻译：操作吸光度监测器的方法
公开(公告)号：US4709190A
公开(公告)日：1987-11-24
申请号：US787753
申请日：1985-10-15
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： H05B41/292 , H05B41/36
CPC分类号： H05B41/2925 , Y10S315/07
摘要： To provide a reliable start for cadmium and zinc lamps and reduce baseline noise in an absorbance monitor, voltage pulses are applied to the primary of a transformer followed by shutoff of the primary current which discharges the energy stored in the magnetizing inductance of the transformer as three thousand volt peaks in its secondary in a series of timed steps. At the end of the timed period, the system shuts down unless it has approached operating frequency. The frequency is controlled by the amount of current passing through a gas discharge lamp in circuit with the transformer secondary and the frequency controls the amplitude of the voltage spikes. After warm-up, blanking pulses prevent optical noise from electrical-path-change oscillations within the tube. In one embodiment, a constant current source controls the current and in another, an operating current and frequency are established by the transformer leakage inductance and lamp characteristics in the circuit.
摘要翻译：为了提供镉和锌灯的可靠启动并减少吸光度监测器中的基线噪声，将电压脉冲施加到变压器的初级，然后关闭初级电流，将存储在变压器的磁化电感中的能量放电为三其次要的千伏峰在一系列定时步骤中。在时间段结束时，系统关闭，除非已经接近运行频率。频率由通过变压器次级电路中的气体放电灯的电流量控制，并且频率控制电压尖峰的幅度。预热后，消隐脉冲可防止管内电路变化振荡的光学噪声。在一个实施例中，恒流源控制电流，另一个实施例中，工作电流和频率由电路中的变压器漏电感和灯特性建立。

80. 发明授权

US4659934A Method and apparatus for reducing Schlieren noise in a liquid chromatograph 失效
标题翻译：用于降低液相色谱仪中Schlieren噪声的方法和装置
公开(公告)号：US4659934A
公开(公告)日：1987-04-21
申请号：US617700
申请日：1984-06-06
申请人： Robert W. Allington
发明人： Robert W. Allington
IPC分类号： G01N21/15 , G01N21/25 , G01N30/30 , G01N30/74 , G01N23/00
CPC分类号： G01N21/251 , G01N21/15 , G01N30/74 , G01N2030/3038 , G01N2201/0231
摘要： A beam of light falling within the range of 180 to 3,000 nanometers is transmitted through a flow cell in an optical compartment of an absorbance detector after warm up of the equipment while the eluant flows through the flow cell from a chromatographic column. The column extends upwardly from the absorbance detector into an air chamber having a volume of approximately 0.25 cubic foot formed with acrylic walls. Air flows from the absorbance detector under the power of a fan at approximately 10 cubic feet per minute upwardly through an air duct having a cross section of approximately 1.5 square inches to the top where it connects with the air chamber, the speed of the motor being adjustable until temperature varies less than one degree Celsius between the flow cell and the lower 10 centimeters of the column. Under these conditions Schlieren noise from the flow cell due to flow-induced thermo-optical effects is reduced.
摘要翻译：落入180-3000纳米范围内的光束在设备预热后通过吸光度检测器的光学隔室中的流动池传输，同时洗脱液从色谱柱流过流动池。该柱从吸光度检测器向上延伸到由丙烯酸壁形成的体积为约0.25立方英尺的空气室中。空气从风扇的功率以约10立方英尺/分钟的速度向上流过吸收检测器，通过横截面大约为1.5平方英寸的空气管道与顶部连通，其与电动机的速度为可调节，直到流动池和塔的下10厘米之间的温度变化不到1摄氏度。在这些条件下，由流动引起的热光效应引起的流动池中的Schlieren噪声降低。

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