公开(公告)号：US4687136A

公开(公告)日：1987-08-18

申请号：US814723

申请日：1985-12-30

申请人： Tadahiro Ozu ,  Nobuyoshi Nakayama ,  Tatsuo Fujii

发明人： Tadahiro Ozu ,  Nobuyoshi Nakayama ,  Tatsuo Fujii

IPC分类号： F02M21/02 ,  F02M47/04 ,  F02M61/04 ,  F02M61/08

CPC分类号： F02M47/046

摘要： A gas injection valve of a gas engine includes a valve body having a nozzle chamber with nozzle holes for injecting fuel gas, a first gas passage for introducing fuel gas, and a second gas passage communicable at one end to the first gas passage and at the other end to the nozzle chamber. A first needle valve closes and opens communication between the first and second gas passages. A second needle valve closes and opens communication between the second gas passage and the nozzle chamber. The first and second needle valves are urged in the closing direction thereof. A hydraulic actuator opens the two needle valves. An extreme tip of the first needle valve in closed state is disposed within and exposed to the interior of the second gas passage.

摘要翻译： 燃气发动机的气体喷射阀包括具有喷嘴室的阀体，喷嘴室具有用于喷射燃料气体的喷嘴孔，用于引入燃料气体的第一气体通道，以及一端连接到第一气体通道的第二气体通道， 另一端到喷嘴室。 第一针阀闭合并打开第一和第二气体通道之间的连通。 第二针阀关闭并打开第二气体通道和喷嘴室之间的连通。 第一和第二针阀沿其关闭方向被推动。 液压执行器打开两个针阀。 处于关闭状态的第一针阀的末端设置在第二气体通道的内部并暴露于第二气体通道的内部。

公开(公告)号：US20080034838A1

公开(公告)日：2008-02-14

申请号：US11650952

申请日：2007-01-09

申请人： Toru Kohei ,  Nobuyoshi Nakayama ,  Shigeyuki Kotake ,  Keiji Aruga

发明人： Toru Kohei ,  Nobuyoshi Nakayama ,  Shigeyuki Kotake ,  Keiji Aruga

IPC分类号： G01N3/30

CPC分类号： H02K15/165

摘要： An apparatus that corrects a weight imbalance around an axis of a spindle motor that rotates a disc in a disc drive includes an impact applicator that applies an impact to a housing that houses the spindle motor and the disc, a plate that supports the housing and impact applicator, a spring member that supports the plate, and enables the plate and the housing to vibrate together when the spindle motor rotates, and a detector that detects a vibration of the housing when the spindle motor rotates.

摘要翻译： 校正围绕在盘驱动器中旋转盘的主轴电机的轴线的重量不平衡的装置包括冲击施加器，其对容纳主轴电机和盘的壳体施加冲击，支撑壳体和冲击的板 施加器，支撑板的弹簧构件，并且当主轴电机旋转时使板和壳体能够一起振动;以及检测器，其在主轴电机旋转时检测壳体的振动。

公开(公告)号：US20090244764A1

公开(公告)日：2009-10-01

申请号：US12481896

申请日：2009-06-10

申请人： Shigeyuki Kotake ,  Nobuyoshi Nakayama ,  Toru Kohei

发明人： Shigeyuki Kotake ,  Nobuyoshi Nakayama ,  Toru Kohei

IPC分类号： G11B15/18

CPC分类号： G11B33/08 ,  G11B19/2027

摘要： A balance correction apparatus is configured to correct weight imbalance around an axis of a spindle motor, and includes a piezoelectric actuator configured to apply an impact to a housing, a controller configured to generate as a rectangular wave a force profile that represents an acceleration applied to the housing by the piezoelectric actuator, and a waveform generator configured to generate a voltage waveform configured to drive the piezoelectric actuator, by integrating the force profile twice. The rectangular wave has a first acceleration after a leading edge and a second acceleration after a trailing edge. The first acceleration enables the disc to move relative to the spindle motor and the housing. The second acceleration enables the disc to move together with the spindle motor and the housing.

摘要翻译： 平衡校正装置被配置为校正围绕主轴电机的轴线的重量不平衡，并且包括构造成对壳体施加冲击的压电致动器，被配置为产生矩形波的控制器，该力分布表示施加到 压电致动器的壳体以及波形发生器，被配置为通过将力分布两次积分来产生构造成驱动压电致动器的电压波形。 矩形波在前缘之后具有第一加速度，在后沿之后具有第二加速度。 第一加速使盘能够相对于主轴电机和壳体移动。 第二加速使盘与主轴电机和外壳一起移动。

公开(公告)号：US07730763B2

公开(公告)日：2010-06-08

申请号：US11650952

申请日：2007-01-09

申请人： Toru Kohei ,  Nobuyoshi Nakayama ,  Shigeyuki Kotake ,  Keiji Aruga

发明人： Toru Kohei ,  Nobuyoshi Nakayama ,  Shigeyuki Kotake ,  Keiji Aruga

IPC分类号： G01N3/30

CPC分类号： H02K15/165

摘要： An apparatus that corrects a weight imbalance around an axis of a spindle motor that rotates a disc in a disc drive includes an impact applicator that applies an impact to a housing that houses the spindle motor and the disc, a plate that supports the housing and impact applicator, a spring member that supports the plate, and enables the plate and the housing to vibrate together when the spindle motor rotates, and a detector that detects a vibration of the housing when the spindle motor rotates.

摘要翻译： 校正围绕在盘驱动器中旋转盘的主轴电机的轴线的重量不平衡的装置包括冲击施加器，其对容纳主轴电机和盘的壳体施加冲击，支撑壳体和冲击的板 施加器，支撑板的弹簧构件，并且当主轴电机旋转时使板和壳体能够一起振动;以及检测器，其在主轴电机旋转时检测壳体的振动。