公开(公告)号：US4326851A

公开(公告)日：1982-04-27

申请号：US200142

申请日：1980-10-24

申请人： Ernesto Bello ,  Steven N. Kolber ,  Wallace H. Coulter

发明人： Ernesto Bello ,  Steven N. Kolber ,  Wallace H. Coulter

IPC分类号： G01F23/26 ,  G01N35/10 ,  G01N1/14 ,  G01N35/06

CPC分类号： G01N35/1009 ,  G01F23/265 ,  G01N2035/1025 ,  G01N2035/1086 ,  G01N35/1004

摘要： A level sensor of a fluid transfer mechanism for determining when the bottom tip of a fluid aspirating probe touches or contacts the top surface of a sample fluid. The level sensor senses the contact capacitively by grounding one plate of a capacitor through the sample fluid and fluid aspirating probe. One capacitor plate is formed of an electrode biased against the bottom of a rotatable supply tray and positioned under a sample containing cavity in the tray. The other capacitor plate is formed by the bottom surface of the sample fluid in the supply cavity, and the dielectric of the capacitor is formed of the supply tray material. An AC signal is applied to the electrode and the probe is grounded. The change in voltage occurring in the AC signal at the electrode when the probe touches the top surface of the sample fluid it is sensed to provide the touch signal.

摘要翻译： 流体传送机构的液位传感器用于确定流体抽吸探针的底部尖端何时接触或接触样品流体的顶表面。 电平传感器通过将样品流体和流体抽吸探头的电容器的一个接地板接地来感测接触电容。 一个电容器板由电极偏置在可旋转的供给托盘的底部并且位于托盘内的样品容纳腔的下方形成。 另一个电容器板由供给腔中的样品流体的底表面形成，并且电容器的电介质由供给盘材料形成。 将AC信号施加到电极并且探针接地。 当探针接触样品流体的顶表面时，在电极处的AC信号中发生的电压的变化被感测以提供触摸信号。

公开(公告)号：US4276260A

公开(公告)日：1981-06-30

申请号：US115691

申请日：1980-01-28

申请人： Vladimir J. Drbal ,  Guenter Ginsberg ,  Bruce J. Hodgins ,  John A. Richardson ,  Ted W. Britton ,  Richard M. Grimm ,  Ernesto Bello ,  Rodolfo R. Rodriguez ,  Ivan K. Saltz

发明人： Vladimir J. Drbal ,  Guenter Ginsberg ,  Bruce J. Hodgins ,  John A. Richardson ,  Ted W. Britton ,  Richard M. Grimm ,  Ernesto Bello ,  Rodolfo R. Rodriguez ,  Ivan K. Saltz

IPC分类号： B01F11/00 ,  G01N35/10 ,  G01N1/14

CPC分类号： G01N35/1009 ,  B01F11/0082 ,  G01N2035/1025 ,  G01N2035/1086 ,  G01N35/1004

摘要： A fluid transfer mechanism for rapidly and accurately picking up or aspirating a fluid quantity or aliquot in one position, moving it to a second position and dispensing the aspirated aliquot. The mechanism includes an arm mounted on a high helix shaft on one end and driven up and down the shaft by a first motor and rotated around the shaft by a second motor. The arm includes at a second end a fluid transfer probe which is moved into and out of the fluids to aspirate and dispense the fluids in precise angular locations. The arm may be accelerated and deaccelerated as it is rotated to avoid vibrations and spilling of the fluid from the probe. The probe may include a level sensing structure for sensing when the probe has contacted a fluid surface. The probe also may be coupled to an oscillator to oscillate the probe in a vessel into which the fluid has been dispensed to mix the fluids therein.

摘要翻译： 流体转移机构，用于快速且准确地将流体量或等分试样拾取或吸入一个位置，将其移动到第二位置并分配吸出的等分试样。 该机构包括臂，其一端安装在高螺旋轴上，并通过第一马达上下驱动轴，并通过第二马达围绕轴旋转。 臂在第二端包括流体转移探针，其被移入和流出流体以在精确的角度位置吸入和分配流体。 手臂可以在旋转时加速和减速，以避免来自探头的流体的振动和溢出。 探针可以包括用于感测探头何时接触流体表面的液位感测结构。 探针还可以耦合到振荡器以将探针摆动在已经分配流体的容器中以将流体混合在其中。

公开(公告)号：US4584623A

公开(公告)日：1986-04-22

申请号：US549308

申请日：1983-11-07

申请人： Ernesto Bello ,  Joseph F. Mibelli

发明人： Ernesto Bello ,  Joseph F. Mibelli

IPC分类号： H02H3/20 ,  H02H3/247

CPC分类号： H02H3/207

摘要： Electronic circuitry senses over-voltage and under-voltage within narrow threshold limits, and voltage interruption, in the energization circuit of a sensitive load, such as a refrigeration compressor motor load, to protect against overheating damage and burn-out. Setting to a nominal operating line voltage is provided for to obviate readjustment to the threshold voltages of a window comparator utilized to sense over-voltage and under-voltage.

摘要翻译： 电子电路在敏感负载（例如制冷压缩机电机负载）的通电电路中检测窄阈值极限内的过电压和欠压，以及电压中断，以防止过热损坏和烧坏。 设置为标称工作线电压是为了避免重新调整到用于感测过电压和欠压的窗口比较器的阈值电压。

公开(公告)号：US4341736A

公开(公告)日：1982-07-27

申请号：US248276

申请日：1981-03-27

申请人： Vladimir J. Drbal ,  Guenter Ginsberg ,  Bruce J. Hodgins ,  John A. Richardson ,  Ted W. Britton ,  Richard M. Grimm ,  Ernesto Bello ,  Rodolfo R. Rodriguez ,  Ivan K. Saltz

发明人： Vladimir J. Drbal ,  Guenter Ginsberg ,  Bruce J. Hodgins ,  John A. Richardson ,  Ted W. Britton ,  Richard M. Grimm ,  Ernesto Bello ,  Rodolfo R. Rodriguez ,  Ivan K. Saltz

IPC分类号： B01F11/00 ,  G01N35/10 ,  G01N1/12 ,  G01N1/14

CPC分类号： G01N35/1009 ,  B01F11/0082 ,  G01N2035/1025 ,  G01N2035/1086 ,  G01N35/1004

摘要： A fluid transfer mechanism for rapidly and accurately picking up or aspirating a fluid quantity or aliquot in one position, moving it to a second position and dispensing the aspirated aliquot. The mechanism includes an arm mounted on a high helix shaft on one end and driven up and down the shaft by a first motor and rotated around the shaft by a second motor. The arm includes at a second end a fluid transfer probe which is moved into and out of the fluids to aspirate and dispense the fluids in precise angular locations. The arm may be accelerated and deaccelerated as it is rotated to avoid vibrations and spilling of the fluid from the probe. The probe may include a level sensing structure for sensing when the probe has contacted a fluid surface. The probe also may be coupled to an oscillator to oscillate the probe in a vessel into which the fluid has been dispensed to mix the fluids therein.

摘要翻译： 流体转移机构，用于快速且准确地将流体量或等分试样拾取或吸入一个位置，将其移动到第二位置并分配吸出的等分试样。 该机构包括臂，其一端安装在高螺旋轴上，并通过第一马达上下驱动轴，并通过第二马达围绕轴旋转。 臂在第二端包括流体转移探针，其被移入和流出流体以在精确的角度位置吸入和分配流体。 手臂可以在旋转时加速和减速，以避免来自探头的流体的振动和溢出。 探针可以包括用于感测探头何时接触流体表面的液位感测结构。 探针还可以耦合到振荡器以将探针摆动在已经分配流体的容器中以将流体混合在其中。