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公开(公告)号：US5309255A
公开(公告)日：1994-05-03
申请号：US843491
申请日：1992-02-28
CPC分类号： H04N1/0283 , G02B26/10 , H04N1/02815 , H04N2201/0428
摘要： A laser imaging apparatus, such as a laser scanner or laser printer, includes a gas or diode laser which produces a laser beam and an optical system for directing the laser beam onto a object to be scanned or printed. The laser beam is encompassed in a sealed housing from the laser's output to a point at which the beam is no longer subjected to turbulent environment in order to eliminate laser beam pointing instabilities resulting from a turbulent environment caused by thermal sources, cooling fans, etc.
摘要翻译： 诸如激光扫描仪或激光打印机的激光成像设备包括产生激光束的气体或二极管激光器和用于将激光束引导到待扫描或打印的物体上的光学系统。 激光束被包围在从激光器的输出到光束不再经受湍流环境的点的密封壳体中，以消除由热源，冷却风扇等引起的湍流环境导致的激光束指向不稳定性。
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公开(公告)号：US5329825A
公开(公告)日：1994-07-19
申请号：US981716
申请日：1992-11-25
申请人： Paul D. Askins
发明人： Paul D. Askins
CPC分类号： B23Q5/408 , F16H25/24 , H04N1/1008 , F16H2025/2445 , Y10T74/18648
摘要： A precision positioning stage assembly, comprising a movable stage, a drive screw having it axis parallel to the direction of movement of the stage, a follower threadably engaged with the drive screw, and a linear guide rail for supporting one side of the stage. The linear guide rail has its axis parallel to the direction of movement of the stage. A drive member is secured to the stage which has a pair of oppositely disposed contact surfaces spaced apart a predetermined distance. A torque member is secured to the follower, the torque member having a drive section for placement between the contact surfaces and moving the stage along the guide rail. The drive section and the contact surfaces have a configuration so as to provide substantially point contact therebetween.
摘要翻译： 精密定位台组件，包括可移动台，具有平行于工作台的运动方向的轴的驱动螺杆，与驱动螺杆螺纹连接的从动件，以及用于支撑工作台的一侧的直线导轨。 直线导轨的轴线平行于平台的移动方向。 驱动构件被固定到具有间隔开预定距离的一对相对设置的接触表面的平台。 扭矩构件固定到从动件，扭矩构件具有驱动部分，用于放置在接触表面之间并沿着导轨移动台架。 驱动部分和接触表面具有这样的构造，以便在它们之间提供基本的点接触。
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3.发明授权
公开(公告)号：US4950450A
公开(公告)日：1990-08-21
申请号：US222591
申请日：1988-07-21
CPC分类号： C22C1/0441 , B22F3/14 , H01F1/0576
摘要： A method of making high energy Nd-Fe-B magnets having a mass less than 30 grams wherein an alloy of said materials having a grain size less than that desired in the finished magnet is first prepared and subsequently hot worked to the desired configuration with increased magnetic properties and density by introducing into a cavity formed by a die and punch a Nd-Fe-B alloy powder having a particle size of from 45 .mu.m to 250 .mu.m and a grain size of from 100 to 1500 angstroms, compressing the powder at a temperature of from about 550.degree. C. to 750.degree. C. under a die-punch pressure of at least 10 kpsi under a vacuum of less than 200 millitorr to achieve a permanent magnet having a remanence of at least 7 kilogauss.
摘要翻译： 制造质量小于30克的高能Nd-Fe-B磁体的方法，其中首先制备具有小于成品磁体中所需的粒度的所述材料的合金，并随后以增加的方式热加工成所需的构型 通过引入由模具形成的空腔并冲击粒径为45μm至250μm并且粒径为100至1500埃的Nd-Fe-B合金粉末，将粉末压缩， 在约550℃至750℃的温度下，在小于200毫托的真空下，在至少10kpsi的冲模压力下进行，以获得具有至少7千克的剩磁的永磁体。
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4.发明授权
公开(公告)号：US4895592A
公开(公告)日：1990-01-23
申请号：US133599
申请日：1987-12-14
申请人： Tukaram K. Hatwar , Paul D. Askins
发明人： Tukaram K. Hatwar , Paul D. Askins
摘要： Sputtering targets and a method for preparing them by melting the components of a rare earth-transition metal alloy in an inert atmosphere in the inner section of a crucible assembly having inner and outer sections separating by thermally insulating material and cooling the melt in the inner section.
摘要翻译： 溅射靶材及其制备方法，其特征在于，在惰性气氛下，在具有由隔热材料分隔的内部和外部部分的坩埚组件的内部部分中熔化稀土 - 过渡金属合金的组分并冷却内部部分中的熔体 。
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