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    • 23. 发明申请
    • FLEXURE ELASTOMER ANTENNA ISOLATION SYSTEM
    • 柔性弹性体天线隔离系统
    • US20070139292A1
    • 2007-06-21
    • US11487659
    • 2006-07-17
    • Richard HarlessMichael HoffmanDennis CalhounRobert FandrichAndrew VajanyiTherese BoyleDavid Albert
    • Richard HarlessMichael HoffmanDennis CalhounRobert FandrichAndrew VajanyiTherese BoyleDavid Albert
    • H01Q1/12
    • H01Q1/1207H01Q1/18
    • A vibration isolation system (100) for a payload (102). The vibration isolation system provides a level of vibration isolation for all vibration translational and rotational components, while minimizing the moment of the payload mass relative to the isolation system. The system includes a base (104) and a plurality of vibration isolators (114). Each vibration isolator includes a semi-rigid first support member (202) having first portion (204) positioned below the base and an opposing second portion (206) positioned above the base, and a second support member (208) having a first portion (210) fixed to the base and an opposing second portion (212) extending above the base. An elastomeric coupling (228) couples the first support member to the second support member at a height that is approximately equal to a height of a center of gravity (302) of a combined mass of the base and the payload above the base.
    • 一种用于有效载荷(102)的隔振系统(100)。 振动隔离系统为所有振动平移和旋转部件提供了一个隔振级别,同时最大限度地减少了有效载荷质量相对于隔离系统的力矩。 该系统包括基座(104)和多个隔振器(114)。 每个隔振器包括半刚性第一支撑构件(202),其具有位于基座下方的第一部分(204)和位于基座上方的相对的第二部分(206)和具有第一部分(208)的第二支撑构件(208) 210),以及在所述底座上方延伸的相对的第二部分(212)。 弹性联轴器(228)将第一支撑构件连接到第二支撑构件,该高度大致等于基座的组合质量和基座上方的有效载荷的重心(302)的高度。
    • 26. 发明授权
    • Seal for a drive journal of a ball valve
    • 球阀驱动轴颈的密封
    • US4103909A
    • 1978-08-01
    • US837523
    • 1977-09-29
    • Michael HoffmanRolf Pape
    • Michael HoffmanRolf Pape
    • F16J15/24F16J15/3236F16K41/04F16K31/44
    • F16J15/3236F16K41/046
    • A seal for a drive journal of a ball valve. The elements which directly carry out the sealing action are arranged below a thrust collar which is directed against the cover of the ball valve and is displaceable in the axial direction with the aid of set screws which extend through the cover. The sealing ring is a U-ring which abuts the thrust collar and the walls of the drive journal and the housing. The U-ring is provided with an annular slot which is open toward a thrust ring and, at its deepest portion, has a metallic compensating ring followed by a spiral ring.The present invention relates to a seal for a drive journal of a ball valve, according to which the elements which directly carry out the sealing action are arranged below a thrust collar which is directed against the cover of the ball valve and is displaceable in the axial direction with the aid of set screws which extend through the cover.Such drive journal seals require a construction and arrangement of the sealing elements which guarantees a good seal between the drive journal and the housing even with an off-center positioning of the drive journal.It is known to satisfy this requirement by providing so-called cover sleeve-like annular seals with about three to eight sleeves, according to the pressure stage. These seals necessitate a great amount of room and a plurality of parts. With regard to shifts of the drive journal caused by the operating conditions, these seals can accommodate only relatively small deviations from the centered position. The resulting elastic sealing forces of the sleeves are directed at an angle against the walls of the drive journal and the housing, thereby making the smaller radial components of the sleeves operative.It is therefore an object of the present invention to decrease the space occupied by the seal of the drive journal, to reduce the number of individual parts, and to design the seal in such a way that, with relatively little employment of pressure through the thrust collar, an efficient seal is continually achieved, even with extreme deviations of the drive journal from its centered position.This object and other objects and advantages of the present invention will appear more clearly from the following specification in connection with the accompanying drawing, which is a longitudinal cut-away section of a ball valve, showing a portion of the drive journal seal pursuant to the present invention.The drive journal seal pursuant to the present inventon is characterized primarily in that the sealing ring, which is a U-ring and which abuts the thrust collar and the walls of the drive journal and the housing, is provided with a circular slot which is open toward a thrust ring. The slot, at its deepest portion, has a metallic compensating ring followed by a spiral spring.In order to prevent the U-ring, especially with high pressure ball valves, from being damaged as a result of the strong axial pressure load of the drive journal seal, the compensating ring, pursuant to a further embodiment of the present invention, has an approximately semicircular cross section, the rounded portion of which is encircled by the sealing material of the U-ring, while the flat side contacts the spiral spring.In order, if necessary, to have available a particularly broad adjustment possibility for the drive journal seal, the present invention provides that the spiral spring is laterally inserted against the sealing material under preload and has an elliptical cross section, the major axis of which extends parallel to the central axis of the drive journal. The annularly extending flange of the thrust ring, which flange has a rectangular cross section, projects into the slot of the U-ring and continually contacts the spiral spring.
    • 用于球阀驱动轴颈的密封件。 直接执行密封作用的元件被布置在止推环上,该推力环被引导到球阀的盖子上,借助于延伸穿过盖子的固定螺钉在轴向方向上移动。 密封环是U形环,其与推力环和驱动轴颈和壳体的壁相邻。 U形环设置有环形狭槽,其朝推力环开口,并且在其最深部分处具有金属补偿环,随后是螺旋形环。
    • 30. 发明授权
    • Low resolution scintillating array for CT imaging and method of implementing same
    • 用于CT成像的低分辨率闪烁阵列及其实现方法
    • US08761333B2
    • 2014-06-24
    • US13208445
    • 2011-08-12
    • Abdelaziz IkhlefDavid Michael Hoffman
    • Abdelaziz IkhlefDavid Michael Hoffman
    • A61B6/03B23P11/00G06K9/36
    • A61B6/032A61B6/4233A61B6/4266A61B6/501A61B6/503G01T1/2018G01T1/2985
    • A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object, and a detector array configured to detect x-rays passing through the object. The detector array includes a first array of pixels positioned to receive x-rays that pass to the detector array outside a first field-of-view (FOV) to a second FOV, the first array of pixels providing a first resolution, and a second array of pixels positioned to receive x-rays passing through the first FOV, the second array of pixels providing a second resolution that is different from the first resolution. The system includes a data acquisition system (DAS) configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.
    • CT系统包括具有用于接收待扫描物体的开口的可旋转台架,被配置为将X射线束投影到物体的x射线源,以及被配置为检测通过物体的x射线的检测器阵列。 检测器阵列包括第一阵列的像素,其被定位成接收将第一视场(FOV)外的检测器阵列传递到第二FOV的x射线,第一像素阵列提供第一分辨率,第二阵列的像素提供第一分辨率 定位成接收通过第一FOV的x射线的像素阵列,第二像素阵列提供不同于第一分辨率的第二分辨率。 该系统包括被配置为接收来自检测器阵列的输出的数据采集系统(DAS)和被编程为获取对象的成像数据的投影的计算机,并且使用成像数据生成对象的图像。