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    • 4. 发明申请
    • LIQUID LEVEL SENSOR HAVING A VIRTUAL RING
    • 具有虚拟环的液位传感器
    • WO2005106818A3
    • 2006-02-09
    • PCT/US2005010413
    • 2005-03-29
    • STANDEX INT CORPCHAMBERLIN EDWARD R
    • CHAMBERLIN EDWARD R
    • G01F23/24G01F23/68G08B21/00
    • G01F23/683G01F23/242G01F23/243
    • A liquid level sensor for conductive liquids having a virtual bias ring to prevent false "full" indications. The sensor is an inexpensive conductive probe that can be installed in any tank or container used to contain a conductive liquid. The build up of residue such as conductive fluid that fails to drain on the inside of the container wall and probe pieces can cause a short between the probe and ground. This situation will result in falsely showing that the level of the liquid being measured is at least at the minimum predetermined requirement even though the actual level may be far less than that amount. The bias ring is a virtual "ring" that is provided around the insulating base of the sensing probe between the probe tip and the top inside of the tank. The probe is then given a charge (positive for negative ground systems) which interrupts the current path between the sensing tip of the probe and ground via the conducting residue. Consequently, the sensor will read correctly despite the conductive residue that may be present.
    • 一种用于导电液体的液位传感器,其具有虚拟偏置环以防止假的“全”指示。 传感器是便宜的导电探头,可以安装在任何用于容纳导电液体的罐或容器中。 残留物的积聚,例如不能在容器壁和探针片内部排出的导电流体可能导致探针和地面之间的短路。 这种情况将导致错误地显示待测液体的水平至少达到最低预定要求,即使实际水平可能远远小于该量。 偏置环是虚拟的“环”,其设置在探针尖端和罐顶部之间的感测探针的绝缘基底周围。 然后向探头提供电荷(负接地系统的正极),其中断通过导电残渣的探头的感测尖端和接地之间的电流路径。 因此,尽管可能存在导电残留物,传感器仍将正确读取。
    • 9. 发明申请
    • SLIDING VANE PUMP WITH INTERNAL CAM RING
    • 带内置凸轮的滑动液压泵
    • WO2010096256A2
    • 2010-08-26
    • PCT/US2010022703
    • 2010-02-01
    • STANDEX INT CORPKIMBERLIN ROBERT RJIANG JIE
    • KIMBERLIN ROBERT RJIANG JIE
    • F04C2/344
    • F01C21/0836F04C2/3446F04C14/06F04C14/26F04C14/28F04C2270/21F04C2270/701F05C2225/00
    • The present disclosure provides a fluid pump having a pump motor, a pump drive shaft and a vane pump assembly. The pump assembly includes a pump housing having fluid inlet and outlet ports. The pump assembly also includes a distal bearing member having first and second sides and a second side, a plurality of inlet orifices, and a cavity formed in the second side. A first cam ring, having an elliptical interior opening, is disposed within the pump housing adjacent the distal bearing member. A rotor is disposed within the opening in the first cam ring. This rotor has first and second sides, a cavity in the first side, and a plurality of radial slots for sliding vanes. The vane pump assembly also includes a second cam ring, having an elliptical shape, disposed in the cavities formed in the distal bearing member second side and the rotor first side. In addition, the vane pump assembly includes a proximate bearing member disposed within the pump housing adjacent the first cam ring and having a plurality of outlet orifices.
    • 本公开提供了一种具有泵马达,泵驱动轴和叶片泵组件的流体泵。 泵组件包括具有流体入口和出口的泵壳体。 泵组件还包括具有第一侧和第二侧以及第二侧的远端轴承构件,第二侧,多个入口孔和形成在第二侧中的空腔。 具有椭圆形内部开口的第一凸轮环设置在泵外壳内邻近远侧轴承部件。 转子设置在第一凸轮环的开口内。 该转子具有第一侧和第二侧,第一侧中的空腔和用于滑动叶片的多个径向槽。 叶片泵组件还包括具有椭圆形状的第二凸轮环,其设置在形成在远端轴承部件第二侧和转子第一侧的空腔中。 此外,叶片泵组件包括邻近的第一凸轮环设置在泵壳体内并且具有多个出口孔的邻近轴承构件。