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    • 5. 发明授权
    • Liquid fuel injection pumping apparatus
    • 液体燃油喷射泵送装置
    • US4309151A
    • 1982-01-05
    • US133248
    • 1980-03-24
    • John Craven
    • John Craven
    • F02M41/14F02M55/00F04B23/12
    • F02M55/007F02M41/1405
    • A liquid fuel injection pumping apparatus for supplying fuel to an internal combustion engine comprises an injection pump to which fuel is supplied by a fuel pump. An air/fuel separator is provided and also a valve including a spring loaded piston for controlling the output pressure of the feed pump, the separator being connected to the outlet of the feed pump and the piston being subject to the output pressure of the pump. A space is defined in the pump housing and from which fuel can be drawn by the feed pump when the output pressure of the feed pump falls due to the entry of air into the feed pump. The air/fuel separator has a restricted outlet through which air and fuel can flow to an outlet in the housing and the space has an outlet which is placed in communication with the feed pump inlet by the piston.
    • 用于向内燃机供给燃料的液体燃料喷射泵送装置包括:由燃料泵供给燃料的喷射泵。 提供了空气/燃料分离器,还包括一个阀,该阀包括用于控制进料泵的输出压力的弹簧加载的活塞,分离器连接到进料泵的出口,活塞受到泵的输出压力的影响。 当泵的输出压力由于空气进入进给泵而下降时,在泵壳体中限定了一个空间,并且由供给泵可以从中抽出燃料。 空气/燃料分离器具有限制的出口,空气和燃料可以通过该出口流到壳体中的出口,并且空间具有通过活塞与进料泵入口连通的出口。
    • 6. 发明授权
    • Scanning electron microscope
    • 扫描电子显微镜
    • US06833546B2
    • 2004-12-21
    • US10220956
    • 2002-10-22
    • John CravenFrancis Baker
    • John CravenFrancis Baker
    • G01N2300
    • H01J37/244H01J37/28H01J2237/2608
    • A scanning electrode electron microscope for imaging a sample, the microscope comprising a sample chamber containing a gas in which the sample is positioned in use. A bias member is maintained at a predetermined electrical potential so as to accelerate electrons emitted from the sample. A detection system generates the image of the sample. The detection system comprises an ion collector positioned between the sample and the bias member, the ion collector being maintained at a potential below the predetermined electrical potential to thereby collect the ions from the region between the sample and the bias member. a sensor coupled to the ion collector for determining the member of ions collected thereon; and, a processing system responsive to the sensor to generate an image of the sample.
    • 一种用于对样品成像的扫描电极电子显微镜,所述显微镜包括样品室,所述样品室含有样品在使用中定位的气体。 偏置构件保持在预定电位,以加速从样品发射的电子。 检测系统生成样品的图像。 检测系统包括位于样品和偏置构件之间的离子收集器,离子收集器保持在低于预定电势的电位,从而从样品和偏置构件之间的区域收集离子。 耦合到所述离子收集器的传感器,用于确定在其上收集的离子的成员; 以及响应于所述传感器以产生所述样本的图像的处理系统。
    • 7. 发明授权
    • Valve assembly
    • 阀组件
    • US5415378A
    • 1995-05-16
    • US230935
    • 1994-04-21
    • John Craven
    • John Craven
    • E21B34/02F16K3/02F16K31/122F16K3/00
    • F16K31/122E21B34/02F16K3/02
    • A valve assembly comprising a tubular member (2) having an axial bore (4) which is selectively opened and closed by a gate valve. The gate valve includes a sliding gate (5), a first actuating stem (9,27) engagable with one side of the gate and a second actuating stem on the opposite side of the gate and also engagable with the gate. The actuating stems can move the gate between open and closed positions, and an intermediate position in which the gate can be run into and withdrawn from a support with the tubular member.
    • 一种阀组件,包括具有轴向孔(4)的管状构件(2),所述轴向孔被选择性地由闸阀打开和关闭。 闸阀包括滑动门(5),可与门的一侧接合的第一致动杆(9,27)和位于门的相对侧上的第二致动杆,并且还与门接合。 致动杆可以在打开和关闭位置之间移动闸门,以及中间位置,在该中间位置,闸门可以与管状构件一起延伸到支撑件中并从支撑件中取出。