公开(公告)号：US4760732A

公开(公告)日：1988-08-02

申请号：US67836

申请日：1987-06-29

Applicant: Robert A. Bredeweg ,  Jeffrey R. Larson ,  Stephen W. Barr

Inventor： Robert A. Bredeweg ,  Jeffrey R. Larson ,  Stephen W. Barr

IPC: G01N30/32

CPC classification number: G01N30/32

Abstract: A flow programmer for gas chromatography of the type having a mass flow meter for controlling the flow rate of a gas chromatography carrier gas controllable at a selected carrier gas flow rate program by an electrical input to the mass flow meter and an electrical circuit for generating the electrical input. The improvement is that the electrical circuit for generating the electrical input is an analog electrical circuit which includes an operational amplifier having an electrical capacitor in the feedback loop of the operational amplifier to produce a selected voltage input program.

Abstract translation: 一种用于气相色谱的流程编程器，其具有质量流量计，用于通过电输入到质量流量计来控制气体色谱载体气体在选定的载气流速程序下的流量，以及用于产生 电输入。 改进之处在于，用于产生电输入的电路是模拟电路，其包括在运算放大器的反馈回路中具有电容器的运算放大器，以产生所选择的电压输入程序。

公开(公告)号：US4906395A

公开(公告)日：1990-03-06

申请号：US808778

申请日：1985-12-13

Applicant: P. Richard Stoesser ,  Stephen W. Barr

Inventor： P. Richard Stoesser ,  Stephen W. Barr

IPC: C11D17/04

CPC classification number: C11D17/041

Abstract: A detergent package having a cap of a given volume is described.The package has an indicator strip adapted to undergo a physical change upon contact with a sample of water. The physical change is visually perceptible and indicative of the amount of detergent necessary to effectively launder clothes in the water. The amount of detergent indicated by the indicator strip is expressed as a multiple of the volume of the cap.The use of the package is also described.

Abstract translation: 描述了具有给定体积的帽的洗涤剂包装。 包装具有适于在与水样品接触时经历物理变化的指示条。 物理变化在视觉上是可察觉的，并且指示有效洗涤水中的衣服所需的洗涤剂的量。 由指示条指示的洗涤剂的量表示为盖的体积的倍数。 还描述了包装的使用。

公开(公告)号：US5310526A

公开(公告)日：1994-05-10

申请号：US978566

申请日：1992-11-19

Applicant: E. Deniz Yalvac ,  Stephen W. Barr ,  Selim Yalvac

Inventor： E. Deniz Yalvac ,  Stephen W. Barr ,  Selim Yalvac

IPC: C12M1/34 ,  G01N21/75 ,  G01N21/85 ,  G01N21/00

CPC classification number: G01N21/85 ,  G01N21/75 ,  Y10S435/808

Abstract: A chemical sensor and method for in-line chemical analysis including a body having a central cavity. The body also has a pair of openings through it to the cavity. A porous plug, such as a ceramic frit, is sealed into each of these openings so that there is a space between the plugs in the cavity. A vent passageway through the body to the cavity is also provided. A pressurized sample is flowed through one porous plug into the cavity while a pressurized reagent is flowed through the other porous plug into the cavity. A component of interest of the sample reacts with a reactive component of the reagent in the cavity to produce a reaction product. The reaction product is analyzed in the cavity by, for example, absorption spectroscopy. As fresh sample and reagent flow into the cavity, the reaction products flow out of the cavity by way of the vent passageway. An ultrasonic vibrator is attached to the body to enhance mixing of the reagent and sample in the cavity

Abstract translation: 用于在线化学分析的化学传感器和方法，包括具有中心腔的主体。 身体还有一对开口通过它到空腔。 诸如陶瓷玻璃料的多孔插塞被密封到这些开口的每一个中，使得在空腔中的插头之间存在空间。 还提供了通过本体到空腔的通气通道。 加压样品通过一个多孔塞流入空腔，而加压试剂通过另一个多孔插塞流入空腔。 样品感兴趣的组分与空腔中的试剂的反应性组分反应以产生反应产物。 通过例如吸收光谱法在空腔中分析反应产物。 当新鲜样品和试剂流入空腔时，反应产物通过排气通道流出空腔。 将超声波振动器附接到身体以增强试剂和样品在空腔中的混合

公开(公告)号：US5133644A

公开(公告)日：1992-07-28

申请号：US642482

申请日：1991-01-17

Applicant: Stephen W. Barr ,  Joseph B. Crump ,  Timothy D. Rice

Inventor： Stephen W. Barr ,  Joseph B. Crump ,  Timothy D. Rice

IPC: F04B49/06 ,  F04B49/10

CPC classification number: F04B49/106 ,  F04B49/065 ,  F04B2205/09 ,  F04B2207/0411 ,  F04B2207/0412 ,  F04B2207/0413 ,  F04B2207/0421 ,  F04B2207/0422 ,  F04B2207/0423

Abstract: A variable displacement pump is controlled throughout a broad range of operating conditions between a maximum pressure, low flow rate combination and a minimum pressure, high flow rate combination even when the pump is driven by a power limited prime mover. Different relief valves set at different operating pressures are automatically selectably connected to a control port of the pump in response to the actual flow rate of the fluid pumped by the pump reaching different flow rate set points.