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公开(公告)号：US06621001B2
公开(公告)日：2003-09-16
申请号：US10001629
申请日：2001-10-31
IPC分类号： H05K900
CPC分类号： H05K9/0015
摘要： A system and method for radio frequency (RF) sealing a door of an RF enclosure is disclosed. The door employs a two-axis gimbal system to provide two degrees of freedom as the drawer door makes contact with the RF enclosure. The two-axis gimbal system allows the forces applied to the sealing gasket to be uniform along the length of the seal. This enables uniform seal compression, and therefore, uniform RF isolation. The door is held rigid while the door gasket is not affecting a seal against the frame of the RF enclosure. As the door becomes engaged with the frame, multiple contact points of the drawer door are deactivated thereby allowing the drawer door to pivot near the seal centroid on a two-axis gimbal system. The two-axis gimbal system allows the RF seal to be applied uniformly across the length of the seal.
摘要翻译： 公开了一种用于射频（RF）密封RF外壳的门的系统和方法。 门随着抽屉门与RF外壳接触，采用双轴万向节系统提供两个自由度。 双轴万向架系统允许施加到密封垫圈的力沿密封件的长度均匀。 这使得能够均匀地进行密封压缩，并因此实现均匀的RF隔离。 门被保持刚性，而门垫圈不影响与RF外壳的框架的密封。 当门与框架接合时，抽屉门的多个接触点被停用，从而允许抽屉门在双轴万向节系统上靠近密封质心枢转。 双轴万向架系统允许RF密封件均匀地施加在密封件的长度上。
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公开(公告)号：US06841990B2
公开(公告)日：2005-01-11
申请号：US10001630
申请日：2001-10-31
CPC分类号： G01R29/0821
摘要： A mechanical apparatus for testing a plethora of RF devices using test resources that are quickly and easily replaced is disclosed. The mechanical apparatus is located within an RF enclosure, and contains space for one or more test resources, or customizations, to be installed and applied to a device under test (DUT). The mechanical apparatus is coupled to the RF enclosure through a nest plate coupling to a drawer plate. This coupling is made into a tight seal through the use of o-ring elements that enables pneumatic pressure to be made available within the mechanical apparatus. The mechanical apparatus has a stationary base assembly, a lower nest assembly and an upper nest assembly. The DUT may be placed between the upper nest assembly and lower nest assembly, where the upper nest assembly and lower nest assembly may be coupled to test resources that may be applied to the DUT.
摘要翻译： 公开了一种用于使用快速且容易地更换的测试资源来测试大量RF设备的机械设备。 该机械设备位于RF外壳内，并且包含要安装和应用于被测设备（DUT）的一个或多个测试资源或定制的空间。 机械装置通过联接到抽屉板的嵌板耦合到RF外壳。 通过使用能够在机械设备内提供气动压力的O形环元件将该联接件制成紧密密封。 机械装置具有固定基座组件，下部嵌套组件和上部嵌套组件。 DUT可以放置在上部嵌套组件和下部嵌套组件之间，其中上部嵌套组件和下部嵌套组件可以耦合到测试可以应用于DUT的资源。
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公开(公告)号：US5331490A
公开(公告)日：1994-07-19
申请号：US606887
申请日：1990-10-31
IPC分类号： G11B15/675 , G11B25/06 , G11B33/02 , G11B5/58
CPC分类号： G11B33/02 , G11B15/67521 , G11B25/063
摘要： The present invention provides a back-up tape drive having a precision molded chassis with a fine positioning system for a tape head. This system includes a follower nut threadingly mounted on a lead screw that is bi-directionally rotated by a stepper motor. A lever arm engages the follower nut in a manner such that torsional moments between the forces of the follower nut and lever arm are minimized. The other end of the lever arm engages a tape head mounting unit. The lever arm pivotally engages the chassis at a predetermined midpoint of the lever arm such that a mechanical advantage is derived. The positioning system is designed so the forces acting on the tape head mounting unit are aligned to minimize the torsional forces acting on the tape head mounting unit. The tape head mounting unit further includes reference features that reduce the need for azimuth and zenith adjustment.
摘要翻译： 本发明提供了一种具有精密模制底盘的备用磁带驱动器，其具有用于磁带头的精细定位系统。 该系统包括螺纹安装在由步进电机双向旋转的导螺杆上的从动螺母。 杠杆臂以使得从动螺母和杠杆臂的力之间的扭转力矩最小化的方式与从动螺母接合。 杠杆臂的另一端与磁带头安装单元接合。 杠杆臂在杠杆臂的预定中点处枢转地接合底盘，从而得到机械优点。 定位系统被设计成使作用在磁带头安装单元上的力被对准，以使作用在带头安装单元上的扭转力最小化。 磁带头安装单元还包括减少对方位角和天顶调整的需要的参考特征。
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