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    • 1. 发明申请
    • Magnetostrictive pump
    • 磁致伸缩泵
    • US20060115379A1
    • 2006-06-01
    • US11273583
    • 2005-11-14
    • David BachMuniswamappa Anjanappa
    • David BachMuniswamappa Anjanappa
    • G01N33/00
    • F04B43/04F04B17/04
    • A multi-valved positive displacement pump design that employs a magnetostrictive fluid pump in combination with magnetostrictive gates. The pump generally comprises a pump housing defining an internal fluid chamber, an inlet port to the fluid chamber, an outlet port from the fluid chamber, a magnetostrictive positive displacement pump in the fluid chamber, and magnetostrictive gates (valves) selectably blocking the inlet port to the fluid chamber and the outlet port from the fluid chamber. All pump and gate actuators include rods formed of magnetostrictive material (seated in the housing), and coil windings for electrical excitation to vary the length of the rods. The pump and valves are operated under PLC control according to a pumping sequence comprising a fluid induction step wherein the pump and inlet actuator rods are retracted and the outlet actuator rod is extended to open the inlet port and induct fluid into the fluid chamber, and a fluid dispensing step wherein the pump and inlet actuator rods are extended and the outlet actuator rod is retracted to close the inlet port and expel fluid from the fluid chamber. The positive displacement pump has particular utility in the context of a cell sorter system for sorting desired cells from undesired matter, and an embodiment thereof is also disclosed.
    • 采用磁致伸缩流体泵与磁致伸缩门结合的多阀正排量泵设计。 泵通常包括限定内部流体室的泵壳体,流体室的入口端口,来自流体室的出口端口,流体室中的磁致伸缩容积泵,以及可选地阻挡入口端口的磁致伸缩门 从流体室流到流体室和出口。 所有泵和门执行器都包括由磁致伸缩材料(位于壳体中)形成的杆和用于电激励的线圈绕组以改变杆的长度。 泵和阀根据包括流体诱导步骤的泵送顺序在PLC控制下操作,其中泵和进口致动器杆缩回并且出口致动器杆被延伸以打开入口端口并将流体引入流体室,并且 流体分配步骤,其中泵和入口致动器杆被延伸并且出口致动器杆缩回以关闭入口端口并从流体室排出流体。 正位移泵在细胞分选系统的上下文中具有特别的用途,用于从期望的物质分选所需的细胞,并且还公开了其实施方案。
    • 2. 发明申请
    • Measurement of viscosity using magnetostrictive particle sensors
    • 使用磁致伸缩粒子传感器测量粘度
    • US20060010963A1
    • 2006-01-19
    • US10965289
    • 2004-10-14
    • David BachMuniswamappa Anjanappa
    • David BachMuniswamappa Anjanappa
    • G01N11/00
    • G01N11/00G01N9/36G01N27/72G01N2011/0086G01N2291/02863
    • A system for making dynamic measurement of viscosity or density of a fluid using magnetostrictive particles. Magnetostrictive particles are placed in contact or proximity with a fluid where they can experience stress caused by the viscosity of the fluid when they expand, contract or otherwise move. A alternating or otherwise changing magnetic field is applied to the system causing the particles to expand and contract. A sense coil detects a total magnetic field that is a superposition of the applied field and a field generated in the magnetostrictive particles as they expand and contract. The amplitude of this sensor is related to the viscosity. The applied magnetic field can also be swept in frequency with the location of a resonance also indicating viscosity or density.
    • 一种使用磁致伸缩颗粒动态测量流体的粘度或密度的系统。 磁致伸缩颗粒放置在与流体接触或接近的位置,当它们膨胀,收缩或以其它方式移动时,它们可以经受由流体粘度引起的应力。 交替或其他变化的磁场被施加到系统,导致颗粒膨胀和收缩。 感测线圈检测作为施加场的叠加的总磁场和在磁致伸缩颗粒膨胀和收缩时产生的磁场。 该传感器的振幅与粘度有关。 所施加的磁场也可以频率扫过,同时也指示粘度或密度的共振位置。
    • 4. 发明申请
    • Flow analysis dispensing needles and nozzles
    • 流量分析分配针和喷嘴
    • US20070041875A1
    • 2007-02-22
    • US11507067
    • 2006-08-18
    • David BachRonald Genova
    • David BachRonald Genova
    • B01L3/02
    • B01L3/021B01L2200/143B01L2400/0487G01N35/10G01N2035/1034G01N2035/1062
    • An improved needle and nozzle design that allows for precision dispensing and mixing of fluids by assist of an integral optical system coupled to a closed loop controller drive system for real-time monitoring of the small volume precision dispensing requirements of bioscience applications. The needles/nozzles have an optically-transmissive wall or window coupled to an optical system including an optical detector and light source, at least the detector being connected to a closed loop controller drive system (e.g., a “needle/nozzle integrated optical analysis system”). Optical detection can be based on fluorescence, scattered light, absorbance, or a combination, and any optical change in the analysis region can be observed via the transmitted/reflected light and used as feedback to control the pump drive system. Alternate embodiments are shown in which optical fibers or rods are used for coupling the detector to the needle/nozzle, and a lens is used for coupling the fiber(s)/rods into the needle/nozzle.
    • 改进的针头和喷嘴设计,通过协助耦合到闭环控制器驱动系统的整体光学系统,实现对生物科学应用的小体积精确分配要求的实时监控,从而允许流体的精确分配和混合。 针/喷嘴具有耦合到包括光学检测器和光源的光学系统的光学透射壁或窗口,至少检测器连接到闭环控制器驱动系统(例如,“针/喷嘴集成光学分析系统 “)。 光学检测可以基于荧光,散射光,吸光度或组合,并且可以通过透射/反射光观察分析区域中的任何光学变化,并用作控制泵驱动系统的反馈。 示出了替代实施例,其中使用光纤或棒将检测器耦合到针/喷嘴,并且使用透镜来将纤维/杆连接到针/喷嘴中。
    • 7. 发明申请
    • Drive technology for peristaltic and rotary pumps
    • 用于蠕动泵和旋转泵的驱动技术
    • US20050180856A1
    • 2005-08-18
    • US11036782
    • 2005-01-14
    • David Bach
    • David Bach
    • F04B43/00F04B43/12F04B49/06F04B49/00F04B17/00
    • F04B9/02F04B13/00F04B17/03F04B43/0081F04B43/12F04B43/1253F04B49/065F04B2201/1208F04B2203/0213
    • A method and system for controlling a rotary pump where a rotary pump can be coupled to a stepper motor, and the stepper motor can be controlled with micro- or nano-stepping accuracy using a processor controlled drive system. The processor controlled drive system moves the stepper motor according to a predetermined move profile; this causes the rotary pump to dispense a precision amount of fluid. The rotary pump can be a peristaltic pump or any other type of pump. The rotary pump can be coupled to the stepper motor through a reduction gear with a reduction ratio of 2:1 or similar. The stepper motor can be mechanically coupled to a rotational position encoder so that a measure of the rotation position can be fed back to the processor. The processor can cause the stepper motor to interpolate between pulse positions of the encoder.
    • 一种用于控制旋转泵的方法和系统,其中旋转泵可以耦合到步进电动机,并且步进电机可以使用处理器控制的驱动系统以微步或微步进精度来控制。 处理器控制的驱动系统根据预定的移动轮廓移动步进马达; 这使得旋转泵分配精确量的流体。 旋转泵可以是蠕动泵或任何其他类型的泵。 旋转泵可以通过减速比2:1或类似的减速齿轮联接到步进电机。 步进电机可以机械地耦合到旋转位置编码器,使得可以将旋转位置的测量值反馈给处理器。 处理器可以使步进电机在编码器的脉冲位置之间插值。
    • 8. 发明授权
    • Grain chute system
    • 谷物滑槽系统
    • US4603769A
    • 1986-08-05
    • US631099
    • 1984-07-16
    • Bert BachDavid Bach
    • Bert BachDavid Bach
    • B65G69/18B65G11/06B65G1/00B65G11/00
    • B65G69/181B65G65/32
    • In a grain elevator, grain mixed with dust is delivered near the top of a grain silo to the receiving orifice of a grain chute. The chute includes an enclosed conduit which extends from the top of the grain silo to its floor and deposits the grain in the silo without freely falling in the interior of the silo. The conduit has a tandem column series of vertically extending doors which are counter-balanced to be normally closed and which are opened by the weight of the grain in the conduit. The fall of the grain within the conduit separates the grain from the dust and the dust is removed by an exhaust fan connected to the conduit, the air flow being through the open bottom doors of the conduit, through the conduit, and out of the silo to a tube connected to a dust separator. In addition, the grain falls within the conduit and flows out of the doors which the grain column opens and which are immediately above the level of the grain already delivered into the silo, the other doors remaining closed.
    • 在粮食升降机中,与灰尘混合的谷物在谷仓的顶部附近传送到粮食槽的接收孔。 滑槽包括封闭的导管,其从谷仓的顶部延伸到其地板并将谷物沉积在料仓中,而不会自动落入料仓的内部。 导管具有串列系列的垂直延伸的门,其平衡平衡以常闭,并且由导管中的颗粒的重量打开。 导管内的谷物的坠落将颗粒与灰尘分开,灰尘通过连接到导管的排气风扇除去,空气流通过导管的敞开的底部门,通过导管,并且进出筒仓 连接到与灰尘分离器连接的管。 此外,谷物落在导管内并流出谷物柱开口的门,并且立即在已经输送到料仓中的谷物的水平面上方,其他门保持关闭。
    • 9. 发明申请
    • System and Method for Holding Tubing for a Peristaltic Pump that Prevents Tubing Stretch or Deformation
    • 用于阻止管道拉伸或变形的蠕动泵的管道系统和方法
    • US20110286870A1
    • 2011-11-24
    • US13114266
    • 2011-05-24
    • David Bach
    • David Bach
    • F04B43/08B23P17/00
    • F04B43/1292F04B43/1261Y10T29/49229
    • An enhancement for a peristaltic pump that, in a particular embodiment, can be a thin concave spring member or other mechanism with at least one tubing notch adapted to be mounted on a peristaltic pump frame such that peristaltic pump tubing can pass through a notch in the spring member, through the peristaltic pump and through a notch in a similar thin concave spring member mounted on an opposite side of said peristaltic pump so that the spring members prevent tube-stretching or deformation of the tubing. Numerous other embodiments are possible. All of the embodiments allow attaching a first and second notched spring-clamp or other tubing holder onto the input and output sides of a peristaltic pump frame; threading peristaltic pump tubing through a notch or other part in a first spring-clamp or tubing holder, through the peristaltic pump and through a notch or other part in a second spring-clamp or tubing holder.
    • 在特定实施例中,蠕动泵的增强可以是薄的凹形弹簧构件或具有适于安装在蠕动泵框架上的至少一个管道切口的其它机构,使得蠕动泵管能够通过 弹簧构件,通过蠕动泵并且通过安装在所述蠕动泵的相对侧上的类似薄的凹入弹簧构件中的凹口,使得弹簧构件防止管的拉伸或变形。 许多其他实施例是可能的。 所有这些实施例允许将第一和第二缺口弹簧夹或其它管夹固定在蠕动泵框的输入和输出侧上; 穿过蠕动泵管通过第一弹簧夹或管夹持器中的凹口或其它部分穿过蠕动泵,并穿过第二弹簧夹或管夹中的凹口或其它部分。