Pneumatic gross leak detector
    1.
    发明授权
    Pneumatic gross leak detector 失效
    气动检漏仪

    公开(公告)号:US4154092A

    公开(公告)日:1979-05-15

    申请号:US902595

    申请日:1978-05-04

    IPC分类号: G01M3/32

    CPC分类号: G01M3/329

    摘要: A pneumatic gross leak detector for testing micro-electronic packages. Thepparatus includes a frame having a vertically movable upper section and a stationary lower section. A chamber is provided with walls which are secured to the upper section for movement therewith. The chamber includes upper, lower and intermediate portions disposed in communication. A test chamber base is secured to the lower stationary section to receive the microelectronic package therein. A first piston is provided in the upper chamber portion for moving the upper frame section downwardly for sealing engagement for the lower chamber portion with the test chamber base. A second piston is provided for compressing air in the lower chamber portion to a predetermined value. A readout device communicates into the test chamber to indicate if compressed air in the lower chamber leaks into the micro-electronic package.

    摘要翻译: 用于测试微电子封装的气动检漏仪。 该装置包括具有可垂直移动的上部和固定的下部的框架。 一个腔室设有壁,它们固定在上部上以便随之移动。 该室包括设置成连通的上部,下部和中间部分。 测试室基座固定到下固定部分以在其中接收微电子封装。 第一活塞设置在上室部分中,用于使上框架部分向下移动,用于与测试室底座密封用于下室部分。 第二活塞被提供用于将下腔室部分中的空气压缩到预定值。 读出装置连通到测试室,以指示下腔室中的压缩空气是否泄漏到微电子封装中。

    Acoustic transducer for sending and receiving acoustic communication
signals
    2.
    发明授权
    Acoustic transducer for sending and receiving acoustic communication signals 失效
    用于发送和接收声通信信号的声学传感器

    公开(公告)号:US5159580A

    公开(公告)日:1992-10-27

    申请号:US770545

    申请日:1991-10-03

    IPC分类号: H04B11/00

    CPC分类号: H04B11/00

    摘要: A uniquely designed acoustic transducer comprising a stack of piezoceramic elements (other piezoelectric materials may be used) mounted upon a tuned, shaped transmit/receive head made of hardened metal alloy. The ceramic stack is preloaded to the head via a stress bolt. Insulator electrodes used in the ceramic stack are selected to minimize compliance in the stack for maximum efficiency. All the material properties, sizes, weights, etc., as well as the overall transducer design are carefully selected to act in combination to match the impedance of the load (i.e. metal structural framework). The diameter of the tip of the tuned, shaped driving head is sized such that when clamped to a metal framework, the base metal of the material just under the tip is compressed to or slightly beyond its yield point. This eliminates the requirement for surface preparation because any coatings will be displaced under the applied pressure and any surface irregularities will be flattened out. The underside of the clamping member used to hold the transducer assembly in place consists of a half wave length reflecting waveguide designed to reflect any absorbed energy back into the load. Thus, the attachment points for both the reflector and the transducer head of the clamping device effectively appear invisible to the driving transducer under load.

    摘要翻译: 一种独特设计的声换能器,其包括安装在由硬化的金属合金制成的调谐的成形的发射/接收头上的压电陶瓷元件(可以使用其它压电材料)的叠层。 陶瓷堆叠通过应力螺栓预载到头部。 选择陶瓷堆叠中使用的绝缘体电极,以最大限度地提高效率。 仔细选择所有材料特性,尺寸,重量等以及整体换能器设计以组合起来以匹配负载(即金属结构框架)的阻抗。 调整好的成形驱动头的尖端的直径的尺寸使得当夹紧到金属框架时,刚好在尖端下方的材料的基底金属被压缩或略微超出其屈服点。 这消除了对表面处理的要求,因为任何涂层将在施加的压力下移位,并且任何表面的不规则性将被平坦化。 用于将换能器组件固定就位的夹紧构件的下侧由半波长反射波导组成,其被设计成将任何吸收的能量反射回负载。 因此,夹持装置的反射器和换能器头的附接点在负载下对于驱动换能器有效地看不见。

    Glass lead seal test apparatus
    3.
    发明授权
    Glass lead seal test apparatus 失效
    玻璃铅封试验仪

    公开(公告)号:US4356721A

    公开(公告)日:1982-11-02

    申请号:US218235

    申请日:1980-12-19

    IPC分类号: G01M3/22 G01M3/20

    CPC分类号: G01M3/223

    摘要: Glass lead seal test apparatus in which a multiplicity of microcircuit pages with the leads sealed relative thereto by glass are checked for leakage between the glass seals and the microcircuit package structure and relative to the leads; this is accomplished by providing an apparatus for evacuating a chamber of the microcircuit packages and a chamber of the apparatus, and then injecting helium into the chamber of the apparatus and then utilizing test structure to test leakage around the glass seals if a perfect seal is not present. The device is designed to handle a multiplicity of microcircuit packages during a given test cycle.

    摘要翻译: 检查玻璃密封件和微电路封装结构之间并相对于引线漏电的玻璃引线密封测试装置,其中多个具有由玻璃密封的引线的微电路封装, 这是通过提供一种用于抽空微电路组件的腔室和设备的腔室的装置来实现的,然后将氦气注入设备的腔室中,然后利用测试结构来测试玻璃密封件周围的泄漏,如果完美的密封不是 当下。 该器件被设计为在给定的测试周期期间处理多个微电路封装。

    Boattail emergence by ejecting nozzle exit cone
    4.
    发明授权
    Boattail emergence by ejecting nozzle exit cone 失效
    通过喷嘴出口锥出现Boattail

    公开(公告)号:US4348957A

    公开(公告)日:1982-09-14

    申请号:US172879

    申请日:1980-07-28

    IPC分类号: F42B15/38 F42B15/10

    CPC分类号: F42B15/38

    摘要: A device for altering the after body shape of a missile configuration so aso reduce the ballistic flight drag coefficient after booster burnout and including linear shaped charge cutting device for severing a portion of a nozzle exit cone just aft of a fixed boattail configuration on the outer surface of the missile to allow boundary layer air flow to flow smoothly over the boattail and thereby reduce the base drag on the missile during the coast phase thereof.

    摘要翻译: 一种用于改变导弹构造的后身体形状的装置,以便在加强器烧坏之后降低弹道飞行阻力系数,并且包括线性成形的充电切割装置,用于在外侧的固定火炬结构的后方切断喷嘴出口锥的一部分 导弹的表面,以允许边界层气流平稳地流过火炬,从而减少导弹在其海岸相期间的基地阻力。

    Uniform flying height slider assembly with improved dynamic air bearing
characteristics
    5.
    发明授权
    Uniform flying height slider assembly with improved dynamic air bearing characteristics 失效
    均匀的飞行高度滑块组件具有改进的动态空气轴承特性

    公开(公告)号:US4870519A

    公开(公告)日:1989-09-26

    申请号:US123398

    申请日:1987-11-20

    申请人: James W. White

    发明人: James W. White

    IPC分类号: G11B5/60

    CPC分类号: G11B5/6005

    摘要: A slider assembly for flying a magnetic head at very low clearances on a fluid film over a moving recording medium. This improved slider assembly provides stability and uniformity of flying height and increased damping characteristics when the slider assembly is subjected to dynamic forces. The slider assembly has, in most embodiments, a pair of rails each having a tapered forward end to provide a converging inlet to achieve the fluid film. Most of the static load is carried by the flat surface of the rails rearward from that tapered forward end. Each rail of the slider assembly has at least one longitudinal transverse pressurization contour (TPC) along corresponding edges of the rails to provide this stability of flying height. When only one TPC per rail is used, the particular edge chosen for the TPC depends upon the disk size and skew angle distribution over the recording zone. The TPC's can be of step construction, a linear taper or a convex configuration. For each, the "average" angle as determined by the height and width of the TPC is about 0.05 to about 5 degrees.

    摘要翻译: 滑块组件,其用于在流动膜上以非常低的间隙在运动的记录介质上飞行磁头。 当滑块组件经受动态力时,该改进的滑块组件提供飞行高度的稳定性和均匀性以及增加的阻尼特性。 在大多数实施例中,滑块组件具有一对轨道,每个轨道具有锥形前端以提供会聚入口以实现流体膜。 大部分静态载荷由轨道的平坦表面从该锥形前端向后承载。 滑块组件的每个轨道具有沿着轨道的相应边缘的至少一个纵向横向加压轮廓(TPC),以提供飞行高度的这种稳定性。 当每个轨道仅使用一个TPC时,为TPC选择的特定边缘取决于记录区域上的磁盘大小和倾斜角度分布。 TPC可以是阶梯式结构,线性锥形或凸形配置。 对于每个,由TPC的高度和宽度确定的“平均”角度为约0.05至约5度。

    Curable organopolysiloxane compositions
    7.
    发明授权
    Curable organopolysiloxane compositions 失效
    可固化的有机聚硅氧烷组合物

    公开(公告)号:US4587136A

    公开(公告)日:1986-05-06

    申请号:US713940

    申请日:1985-03-20

    摘要: Compositions curable by radiation e.g. UV radiation are disclosed and claimed which comprise an organosiloxane having at least two siloxane units including groups --RSH, an organosiloxane having at least two siloxane units including ethylcyclohexenyl groups, and a photoinitiator. The compositions cure on exposure to UV radiation and may be used to produce on a variety of substrates coatings which are of reduced odor. Also, disclosed and claimed is a method of treating a substrate which comprises applying a coating of such compositions and irradiating the coating. Examples given refer to production of coatings on paper substrates to provide cured coatings.

    摘要翻译: 可通过辐射固化的组合物 UV辐射被公开和要求保护,其包含具有至少两个包含基团-RSH的硅氧烷单元的有机硅氧烷,具有至少两个包含乙基环己烯基的硅氧烷单元的有机硅氧烷和光引发剂。 组合物在暴露于紫外线辐射下固化,并且可用于在具有降低的气味的各种基材涂层上生产。 此外,公开并要求保护的是一种处理基底的方法,其包括施加这种组合物的涂层并照射该涂层。 给出的实例是指在纸基材上生产涂层以提供固化涂层。

    Organosiloxane-oxyalkylene copolymers
    8.
    发明授权
    Organosiloxane-oxyalkylene copolymers 失效
    有机硅氧烷 - 氧化烯共聚物

    公开(公告)号:US4490416A

    公开(公告)日:1984-12-25

    申请号:US610538

    申请日:1984-05-15

    IPC分类号: C08G77/46 B05D3/02

    CPC分类号: C08G77/46

    摘要: Organosiloxane-oxyalkylene copolymers in which at least one silicon atom of an organosiloxane unit has attached thereto a group ##STR1## in which X is a divalent hydrocarbon group, R is an alkylene group, n is an integer of at least 2, Z is an organic substituent containing an epoxy group, R' is lower alkyl, vinyl or phenyl, R" is alkyl or alkoxyalkyl and a is 0 or 1, at least 40 percent of the total substituents in the copolymer being methyl.The copolymers are film forming and may be applied to continuous or porous substrates from aqueous or non-aqueous solutions.

    摘要翻译: 有机硅氧烷 - 氧化烯共聚物,其中有机硅氧烷单元的至少一个硅原子连接有基团,其中X是二价烃基,R是亚烷基,n是至少2的整数,Z是 含有环氧基的有机取代基,R'为低级烷基,乙烯基或苯基,R“为烷基或烷氧基烷基,a为0或1,共聚物中总取代基的至少40%为甲基。 共聚物是成膜的,并且可以从水性或非水性溶液施加到连续或多孔的基材上。

    Microcircuit fine leak test apparatus
    9.
    发明授权
    Microcircuit fine leak test apparatus 失效
    微电路精密检漏仪

    公开(公告)号:US4158960A

    公开(公告)日:1979-06-26

    申请号:US902594

    申请日:1978-05-04

    IPC分类号: G01M3/20

    CPC分类号: G01M3/202 G01M3/205

    摘要: A plurality of fine leak test chambers for fast individual testing of herically plated microelectronic devices. Each microcircuit component, having already been subjected to a controlled environment of 5 percent helium and 95 percent nitrogen and then assembled, is placed in the chambers and sealed therein. The chambers are evacuated and helium flow rate (if present) is measured by a spectrometer.

    摘要翻译: 多个精密泄漏测试室,用于快速单独测试气密微电子器件。 已经经受5%氦和95%氮气的受控环境然后组装的每个微电路组件被放置在室中并密封在其中。 将室抽真空,并通过光谱仪测量氦气流速(如果存在)。

    Shaped rail opposed slider air bearing configuration for increased
flying height control of magnetic heads at elevated flexible disk speeds
    10.
    发明授权
    Shaped rail opposed slider air bearing configuration for increased flying height control of magnetic heads at elevated flexible disk speeds 失效
    形状的导轨相对滑块空气轴承配置,以提高的磁盘速度提高磁头的飞行高度控制

    公开(公告)号:US6023393A

    公开(公告)日:2000-02-08

    申请号:US891524

    申请日:1997-07-11

    申请人: James W. White

    发明人: James W. White

    IPC分类号: G11B5/60 G11B17/32

    CPC分类号: G11B5/6005

    摘要: The invention provides an exemplary slider arrangement for supporting read and/or write elements in operative relation to a first and a second side of a flexible moving recording medium. The slider arrangement comprises a first slider having leading edge, a trailing edge and a longitudinal axis therebetween. The first slider comprises a first longitudinal rail and a second longitudinal rail. The first and second longitudinal rails each have a face positioned toward the first side of the recording medium. A second slider is provided having an leading edge, a trailing edge and a longitudinal axis therebetween. The second slider comprises a third longitudinal rail and a fourth longitudinal rail which each have a face positioned toward the second side of the recording medium. The first and second sliders are mounted generally opposite each other with the first rail being generally opposite the third rail and the second rail being generally opposite the fourth rail. Further, the first and fourth rails each include at least one longitudinal slot to partition the first and the fourth rails each into at least two sub-rails. At least one of the sub-rails of the first and the fourth rails houses at least one read and/or write element and has at least one portion which varies in width.

    摘要翻译: 本发明提供了一种示例性的滑块装置,用于支持与柔性运动记录介质的第一和第二侧有效关系的读和/或写元件。 滑块装置包括具有前缘,后缘和它们之间的纵向轴线的第一滑块。 第一滑块包括第一纵向导轨和第二纵向导轨。 第一和第二纵向导轨各自具有朝向记录介质的第一侧定位的面。 提供了第二滑块,其具有前缘,后缘和它们之间的纵向轴线。 第二滑块包括第三纵向导轨和第四纵向导轨,每个纵向轨道具有面向记录介质的第二侧的面。 第一滑块和第二滑块大致彼此相对地安装,第一导轨大致与第三导轨相对,而第二导轨大致与第四导轨相对。 此外,第一和第四轨道每个包括至少一个纵向槽,以将第一和第四轨道分成至少两个子轨道。 第一和第四轨道的至少一个子轨道容纳至少一个读取和/或写入元件,并且具有宽度变化的至少一个部分。