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104 条记录 (耗时 0.027 秒)

    Method of configuring extrudate flowing from an extruder die assembly
    71.
    发明授权
    Method of configuring extrudate flowing from an extruder die assembly 失效
    从挤出机模具组件配置挤出物流动的方法

    公开(公告)号：US5069853A

    公开(公告)日：1991-12-03

    申请号：US479797

    申请日：1990-02-14

    申请人： William H. Miller

    发明人： William H. Miller

    IPC分类号： B29C47/00 ,  B29C47/12 ,  B29C47/26

    CPC分类号： B29C47/0035 ,  B29C47/0816 ,  B29C47/124 ,  B29C47/126 ,  B29C47/22 ,  B29C47/26 ,  B29C47/0009

    摘要： A method is described for bending an extrudate exiting an opening in an die assembly without substantially changing the cross sectional shape of the extrudate. The method includes the step of channeling the flow of extrudate from an extruder through a flow channel and the opening in the die. The opening in the die is rotated with respect to the feed opening to vary the length of the flow channel and pathways along which extrudate flows thereby variably directing flow of the extrudate as the extrudate exits the opening in the die.

    摘要翻译： 描述了一种用于弯曲在模具组件中离开开口的挤出物而基本上不改变挤出物的横截面形状的方法。 该方法包括将来自挤出机的挤出物流通过流动通道和模具中的开口的步骤。 模具中的开口相对于进料口旋转以改变挤出物流动的流动通道和通道的长度，从而随着挤出物离开模具中的开口而可变地引导挤出物的流动。

    Crack detection method for shaft at rest
    72.
    发明授权
    Crack detection method for shaft at rest 失效
    轴休息时的裂纹检测方法

    公开(公告)号：US5068800A

    公开(公告)日：1991-11-26

    申请号：US584893

    申请日：1990-09-19

    申请人： Warren R. Brook ,  William H. Miller

    发明人： Warren R. Brook ,  William H. Miller

    IPC分类号： G01H17/00 ,  G01H13/00 ,  G01M13/00 ,  G01M13/02 ,  G01N3/32 ,  G01N29/12 ,  G21C17/00

    CPC分类号： G01N29/12 ,  G01H13/00 ,  G01N2291/2693

    摘要： The presence, size and location of a crack in a shaft is determined by comparing actual measured natural frequencies of the shaft system with the results of an analytical model. From a multi-station analytical model of an uncracked shaft system, natural frequencies and associated mode shapes are derived. A suspected axial location of a crack is defined, and a natural frequency of interest is selected which has an associated mode shape exhibiting significant localized bending at the suspected axial location of the crack and at a site of response measurement. The analytical model is modified to include a representation of an asymmetric crack at the suspected crack location, and a predicted split and downward shift of a lateral natural frequency of interest and/or a predicted downward shift of a torsional natural frequency of interest as a function of crack depth is calculated from the modified model. The actual shaft system is subjected to an excitation force, and vibrational response measurements are taken. A fast Fourier transform analyzer derives a frequency response function from the measurements which indicates the actual natural frequencies of the shaft system. A comparison of actual natural frequency(s) in the region near the natural frequency of interest with frequency values predicted by the modified model is employed to determine the presence and severity of a crack in the shaft.

    摘要翻译： 通过将轴系的实际测量固有频率与分析模型的结果进行比较来确定轴中裂纹的存在，尺寸和位置。 从一个未裂缝轴系的多工位分析模型可得出固有频率和相关模式形状。 确定裂纹的可疑轴向位置，并且选择感兴趣的固有频率，其具有在裂纹的可疑轴向位置处和在响应测量位置处显示出显着的局部弯曲的相关模式形状。 分析模型被修改为包括在可疑裂缝位置处的不对称裂纹的表示，以及感兴趣的侧向固有频率的预测的分裂和向下移位和/或感兴趣的扭转固有频率的预测向下移动作为函数 裂纹深度由修正模型计算。 实际轴系受到激励力，并进行振动响应测量。 快速傅里叶变换分析仪从测量结果中得出频率响应函数，表明轴系的实际固有频率。 采用在修正模型预测的频率值附近的感兴趣自然频率附近的实际固有频率的比较来确定轴中裂纹的存在和严重程度。

    Rotor with reduced windage losses
    73.
    发明授权
    Rotor with reduced windage losses 失效
    转子减少风阻损失

    公开(公告)号：US5001378A

    公开(公告)日：1991-03-19

    申请号：US402070

    申请日：1989-09-01

    申请人： William H. Miller ,  Warren R. Brook ,  James J. Grant

    发明人： William H. Miller ,  Warren R. Brook ,  James J. Grant

    IPC分类号： H02K1/32 ,  H02K1/22 ,  H02K9/04 ,  H02K19/20

    CPC分类号： H02K19/20

    摘要： A homopolar, transverse pole rotor (14) having a central cylindrical body (24) with a set of circumferentially spaced, axially extending salient poles (28) at each end thereof, is constructed to reduce windage losses. Integral shrouds (29, 31) are placed on either side of each set of salient poles, and a relief is machined into the outer surface of each shroud to form an accentuated pole tip (64) which ensures magnetic centering of the rotor. To further minimize windage losses, the diameter of the central cylindrical body (24) can be reduced, and non-magnetic material can be secured within interpole recesses. Mechanical fasteners (66), dove tails (72) or tensioned circumferential banding (82) can be used to secure the non-magnetic interpole pieces to the rotor.

    摘要翻译： 具有中心圆柱体（24）的单极横极转子（14）在其每个端部处具有一组周向间隔开的轴向延伸的凸极（28），以减少风阻损失。 整体护罩（29,31）放置在每组凸极的任一侧上，并且将浮雕加工到每个护罩的外表面中以形成加强的极尖（64），其确保转子的磁中心。 为了进一步减少风阻损失，可以减小中心圆柱体（24）的直径，并且可以在极间凹槽内固定非磁性材料。 可以使用机械紧固件（66），鸠尾（72）或张紧的周向条带（82）来将非磁性间极件固定到转子。

    Hybrid bearing
    75.
    发明授权
    Hybrid bearing 失效
    混合轴承

    公开(公告)号：US4597676A

    公开(公告)日：1986-07-01

    申请号：US605447

    申请日：1984-04-30

    申请人： John H. Vohr ,  William H. Miller ,  Jeffrey J. Perkins

    发明人： John H. Vohr ,  William H. Miller ,  Jeffrey J. Perkins

    IPC分类号： F16C17/02 ,  F16C17/03 ,  F16C33/10 ,  F16N7/22

    CPC分类号： F16C17/02 ,  F16C17/03 ,  F16C33/10 ,  F16N7/22

    摘要： A hybrid bearing for a horizontal rotatable shaft includes an upper portion which is essentially a half section of a fixed arc journal bearing. The lower portion of the bearing is essentially the lower portion of a tilting pad bearing. Appropriate modifications are made to the oil film and drain lines and other peripheral elements to accommodate the hybrid nature of the bearing. The resultant bearing has the low power loss characteristics of the journal bearing, and additionally, the stability characteristics of a tilting pad bearing.

    摘要翻译： 用于水平可旋转轴的混合轴承包括基本上为固定弧形轴颈轴承的半部分的上部。 轴承的下部基本上是倾斜垫轴承的下部。 对油膜和排水管线等周边元件进行适当的修改以适应轴承的混合特性。 所得轴承具有轴颈轴承的低功率损耗特性，另外还有倾斜垫片轴承的稳定性。

    Rotor of AC dynamoelectric machine with improved cooling and stability and method of making the same
    76.
    发明授权
    Rotor of AC dynamoelectric machine with improved cooling and stability and method of making the same 失效
    交流电动机的转子具有改善的冷却和稳定性以及制作方法

    公开(公告)号：US4585967A

    公开(公告)日：1986-04-29

    申请号：US671368

    申请日：1984-11-14

    申请人： John A. Mayer ,  William H. Miller

    发明人： John A. Mayer ,  William H. Miller

    IPC分类号： H02K1/28 ,  H02K1/32 ,  H02K1/00

    CPC分类号： H02K1/32 ,  H02K1/28 ,  Y10T29/49012

    摘要： A shaft of a high-speed AC dynamoelectric machine includes axially directed flutes which define lands upon which an aligned stack of annular laminations of magnetic steel are shrunk-fit. The flutes concentrate contact forces generated by shrink-fitting in known positions and the non-contacting regions aligned with the flutes provide a small amount of resilience which permits thermal expansion of the rotor to occur without forcing a migration in the shrunk-fit contacting surfaces. The flutes may be used as axial ventilation holes whose effectiveness is enhanced by radially directed air flow channels communicating between the flutes and the outer surface of the rotor. In rotors using laminations which include keyways therein, the fluted shaft provides sufficient keying of the lamination to the shaft so that a key may be omitted. In order to avoid stacking of burrs in the laminations, succeeding groups of laminations are angularly indexed so that the effects of any recurring burrs are distributed about the circumference of the rotor and are thereby cancelled out.

    摘要翻译： 高速交流电动机的轴包括轴向定向的槽纹，其限定了在其上缩小配合的对准的磁性钢板的叠层的叠层。 凹槽集中了通过在已知位置收缩配合而产生的接触力，并且与凹槽对准的非接触区域提供少量弹性，其允许转子发生热膨胀而不强制在收缩配合接触表面中迁移。 凹槽可以用作轴向通风孔，其效率通过在凹槽和转子的外表面之间连通的径向指向的气流通道而增强。 在使用包括键槽的叠片的转子中，带槽的轴提供了对轴的层压的足够的键合，使得可以省略键。 为了避免层叠中的毛刺的堆叠，后续的叠片组被成角度地分度，使得任何重复毛刺的影响围绕转子的圆周分布，从而被抵消。

    Dose calibrator linearity evaluation
    77.
    发明授权
    Dose calibrator linearity evaluation 失效
    剂量校准仪线性度评估

    公开(公告)号：US4333010A

    公开(公告)日：1982-06-01

    申请号：US261748

    申请日：1981-05-08

    申请人： William H. Miller

    发明人： William H. Miller

    IPC分类号： G01D18/00 ,  G01T1/02

    CPC分类号： G01T1/02 ,  G01D18/00

    摘要： A method and apparatus is disclosed for evaluating the linearity of response of a radioactivity dose measurement device over a range of radioactivity dose levels. In accordance with the method, a reference dose of radiopharmaceutical in a container is placed in a central, substantially non-absorptive tube mounted atop a cylindrical spacer with a lead slug coaxial in the tube and positioned below the spacer. This assembly is placed in a measurement chamber of the measurement device, and the response of the device to the unshielded radioactivity is recorded. A succession of leaded shielding sleeves, each having a different known radioactivity attenuation capability, is placed, one at a time, over the central tube. A measurement reading of the device is recorded for indicating the response of the measurement device to the reference dose as shielded by each different sleeve. Multiplication of each response reading by a correction factor, which is a function of the attenuation capability of the sleeve used in obtaining the reading, yields data from which linearity of measurement device response can be easily calculated.

    摘要翻译： 公开了一种用于在放射活性剂量水平的范围内评估放射性剂量测量装置的响应的线性度的方法和装置。 根据该方法，将容器中的放射性药物的参考剂量放置在安装在圆柱形间隔物顶部的中央的基本上不吸收的管中，其中铅管芯在管中同轴并位于间隔物的下方。 将该组件放置在测量装置的测量室中，并记录装置对非屏蔽放射性的响应。 每个具有不同已知放射性衰减能力的一系列带铅屏蔽套管一次一个放置在中心管上。 记录装置的测量读数，用于指示测量装置对每个不同套筒屏蔽的参考剂量的响应。 通过校正因子乘以每个响应读数，该校正因子是获得读数时使用的套筒的衰减能力的函数，产生可以容易地计算测量装置响应线性的数据。