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    • 3. 发明授权
    • Current interrupting device using micromechanical components
    • 电流中断装置采用微机械元件
    • US5430597A
    • 1995-07-04
    • US313
    • 1993-01-04
    • Bharat S. BagepalliMario GhezzoRichard J. SaiaImdad Imam
    • Bharat S. BagepalliMario GhezzoRichard J. SaiaImdad Imam
    • H01H9/40H01H59/00H01H71/12H01H73/00
    • H01H59/0009H01H2071/008H01H71/123H01H9/40
    • A circuit interruption device having a plurality of micromechanical switches mounted on a substrate in a parallel-series array. The array includes a plurality of line branches connected in parallel in a circuit line. Each of the line branches has at least two of the switches serially connected therein. The micromechanical switches each has a pair of contacts formed on the substrate, a bridging contact movably formed on the substrate, and an actuator for causing the bridging contact to move in and out of contact with the contacts. The bridging contact can be either a member slidably disposed in a channel formed on the substrate or member attached to an end of a cantilever having its other end attached to the substrate. The actuator is controlled by a trip device which is also mounted on the substrate. The trip device senses the current in the circuit line and causes the switches to open when a predetermined level of current in the line is exceeded.
    • 一种电路中断装置,具有以平行阵列阵列安装在基板上的多个微机械开关。 阵列包括在电路线中并联连接的多个线分支。 每个线路分支具有串联连接在其中的至少两个开关。 微机械开关各自具有形成在基板上的一对触点,可移动地形成在基板上的桥接触头和用于使桥接触点移动进入和断开与触点接触的致动器。 桥接接触可以是可滑动地设置在形成在基底上的通道中的构件或附接到其另一端附接到基底的悬臂的端部的构件。 致动器由也安装在基板上的跳闸装置控制。 跳闸装置感测电路线路中的电流,并且当超过线路中的预定电流电流时使开关断开。
    • 4. 发明授权
    • High speed contact driver
    • 高速接触驱动器
    • US4656445A
    • 1987-04-07
    • US876132
    • 1986-06-19
    • Bharat S. BagepalliImdad ImamEdward K. Howell
    • Bharat S. BagepalliImdad ImamEdward K. Howell
    • H01H3/22H01H77/10
    • H01H3/222
    • A high speed contact driver for use in an electrical circuit interrupter includes a pair of series-connected, elongate and generally opposing electrical conductors bowed in predetermined, generally opposing contours. These conductors are connected to a bridging electrical contact which is normally biased into a bridging position between a pair of stationary contacts. Pulse generating means are provided for applying a current pulse of predetermined magnitude to the electrical conductors. In response to this current pulse, these electrical conductors electromagnetically repulse each other and drive the bridging contact out of bridging position between the stationary contacts.
    • 用于电路断路器的高速接触驱动器包括一对串联连接的,细长的和大致相对的电导体,其在预定的大致相对的轮廓上弯曲。 这些导体连接到通常被偏置在一对固定触点之间的桥接位置的桥接电触头。 提供了脉冲发生装置,用于向电导体施加预定幅度的电流脉冲。 响应于该电流脉冲,这些电导体电磁地相互斥力并驱动桥接接触离开固定触点之间的桥接位置。
    • 6. 发明授权
    • System for aligning a rotating line-shaft
    • 用于对齐旋转线轴的系统
    • US4984173A
    • 1991-01-08
    • US363841
    • 1989-06-09
    • Imdad ImamGerald J. Carlson
    • Imdad ImamGerald J. Carlson
    • G01B21/24G01H1/00
    • G01B21/24G01H1/003
    • Each bearing of an aligned line-shaft has vibration responses which differ from the vibration responses of a misaligned system in which at least one of the bearings is statically displa=ced. Computed static displacement values for each bearing are derived from the equation of motion of the system employing mass, stiffness and damping coefficients of the system. The static displacement value of each bearing is computed from the vibration responses of all of the bearings. Accelerometers sense the vibration response of each bearing. A computer computes the magnitude of misalignment of each bearing from the sensed responses. The computed results provide an indication of the magnitude of static displacement of each bearing of the system causing the sensed vibration response.
    • 对准的线轴的每个轴承具有不同于其中至少一个轴承静止位置的未对准系统的振动响应的振动响应。 每个轴承的计算静态位移值是从采用系统的质量,刚度和阻尼系数的系统的运动方程得出的。 每个轴承的静态位移值由所有轴承的振动响应计算。 加速度传感器检测每个轴承的振动响应。 计算机从感测到的响应计算每个轴承的未对准的大小。 计算结果提供了导致感测的振动响应的系统的每个轴承的静态位移的大小的指示。
    • 7. 发明授权
    • Electric circuit breaker comprising a plurality of vacuum interrupters
simultaneously operated by a common operator
    • 电气断路器包括由普通操作者同时操作的多个真空断路器
    • US4225761A
    • 1980-09-30
    • US841429
    • 1977-10-12
    • Philip BarkanImdad Imam
    • Philip BarkanImdad Imam
    • H01H33/666H01H33/66
    • H01H33/666H01H2033/6667
    • This circuit breaker comprises a plurality of a vacuum-type circuit interrupters, each having a movable contact rod. A common operating device for the interrupters comprises a linearly-movable operating member. The interrupters are mounted at one side of the operating member with their movable contact rods extending in a direction generally toward the operating member. Means is provided for mechanically coupling the operating member to the contact rods, and this means comprises a plurality of insulating operating rods, each connected at one end to the operating member and at its opposite end to one of the movable contact rods. The operating rods are of substantially equal length and have longitudinal axes that converge and intersect at substantially a common point.
    • 该断路器包括多个真空型电路断路器,每个断路器均具有可动接触杆。 用于断路器的常用操作装置包括线性可移动操作构件。 断路器安装在操作构件的一侧,其可动接触杆沿大致朝向操作构件的方向延伸。 提供了用于将操作构件机械地联接到接触杆的装置,并且该装置包括多个绝缘操作杆,每个绝缘操作杆的一端连接到操作构件,并且在其相对端部连接到一个可动接触杆。 操作杆的长度基本上相同,并且具有在基本相同的点处会聚和相交的纵轴。
    • 9. 发明授权
    • System and method for detecting the occurrence, location and depth of
cracks in turbine-generator rotors
    • 用于检测涡轮发电机转子中裂纹的发生,位置和深度的系统和方法
    • US5258923A
    • 1993-11-02
    • US076311
    • 1987-07-22
    • Imdad ImamSteven H. AzzaroRaymond J. Bankert
    • Imdad ImamSteven H. AzzaroRaymond J. Bankert
    • G01H1/00G01N29/12G01M7/00
    • G01N29/12G01H1/003G01N2291/2693
    • System and method for detecting the occurrence, location and depth of a crack in the rotor of a turbine-generator. The location and depth of a crack are determined by monitoring the fundamental and histogram harmonic components of vibrations at certain predetermined points along the length of the rotor. The histogram harmonic components are normalized relative to the fundamental component, and the normalized histogram harmonic components are monitored to determine the location of the crack. The unnormalized histogram harmonic components are analyzed to determine the depth of the crack. The occurrence of a crack is detected by monitoring the amplitude and phase of rotor vibrations during an accel or decel operation to detect harmonic resonances which are characteristic of a crack in the rotor. The amplitude and phase data is filtered to eliminate spurious data, and it is interpolated to provide baseline and current data at matching speed points.
    • 用于检测涡轮发电机转子中裂纹的发生,位置和深度的系统和方法。 裂纹的位置和深度通过监测沿着转子长度的某些预定点的振动的基本和直方图谐波分量来确定。 直方图谐波分量相对于基波分量进行归一化,并且监测归一化的直方图谐波分量以确定裂纹的位置。 分析非标准化直方图谐波分量以确定裂纹的深度。 通过在加速或减速操作期间监测转子振动的振幅和相位来检测裂纹的发生,以检测作为转子裂纹特征的谐波谐振。 过滤幅度和相位数据以消除杂散数据,并将其内插以在匹配的速度点提供基线和当前数据。
    • 10. 发明授权
    • Compressor noise attenuation using branch type resonator
    • 使用分支型谐振器的压缩机噪声衰减
    • US4927342A
    • 1990-05-22
    • US282784
    • 1988-12-12
    • Jeung T. KimImdad Imam
    • Jeung T. KimImdad Imam
    • F04C29/06
    • F04C29/061F04C29/068Y10S181/403
    • A Helmholtz resonator is used in communication with the compression chamber of a rotary compressor in order to attenuate noise. The resonator concentrates the attenuation of noise in a frequency band around 4 kHz corresponding to the concentration of noise produced by a particular rotary compressor, this band also corresponding to the frequencies which the human ears are most sensitive to. The resonator branches off from the discharge port in an end wall of the compressor. The resonantor uses an easily machined cylindrical resonance cavity on the surface of the end wall, the resonance cavity also being bounded on one side by a cylindrical wall of the rotary compressor. The resonator significantly reduces the noise in a rotary compressor of a specific type commonly used for compressing refrigerant gases in a refrigerator.
    • 亥姆霍兹共振器用于与旋转压缩机的压缩室连通以衰减噪声。 谐振器将噪声的衰减集中在与由特定旋转压缩机产生的噪声的浓度相对应的大约4kHz的频带中,该频带也对应于人耳最敏感的频率。 谐振器从压缩机的端壁中的排出口分支。 谐振器在端壁的表面上使用容易加工的圆柱形谐振腔,谐振腔也通过旋转式压缩机的圆柱形壁在一侧限定。 谐振器显着地降低了通常用于压缩冰箱中的制冷剂气体的特定类型的旋转压缩机中的噪声。