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    • 3. 发明授权
    • Method for protecting the diaphragm and extending the life of SiC and/or Si MEMS microvalves
    • 用于保护隔膜并延长SiC和/或Si MEMS微型阀的寿命的方法
    • US06935608B2
    • 2005-08-30
    • US10876072
    • 2004-06-24
    • Glenn S. ClaydonErnest W. Balch
    • Glenn S. ClaydonErnest W. Balch
    • B81C1/00F15C5/00F16K99/00F16K31/00
    • B81C1/00492F15C5/00F16K99/0001F16K99/0015F16K99/0046F16K99/0048F16K2099/0074F16K2099/008
    • A microvalve and a method of forming a diaphragm stop for a microvalve. The microvalve includes a first layer and a diaphragm member to control the flow of fluid through the microvalve. The method comprises the step of forming a contoured shaped recess extending inward from a surface of the layer by using a laser to remove material in a series of areas, at successively greater depths extending inward from said surface. Preferably, the recess has a dome shape, and may be formed by a direct-write laser operated via a computer aided drawing program running on a computer. For example, CAD artwork files, comprising a set of concentric polygons approximating circles, may be generated to create the dome structure. The laser ablation depth can be controlled by modifying the offset step distance of the polygons and equating certain line widths to an equivalent laser tool definition. Preferably, the laser tool definition is combined with the CAD artwork, which defines a laser path such that the resulting geometry has no sharp edges that could cause the diaphragm of the valve to tear or rupture.
    • 微型阀和形成用于微型阀的隔膜止动件的方法。 微型阀包括第一层和隔膜构件,以控制通过微型阀的流体流动。 该方法包括以下步骤:在从所述表面向内延伸的连续更大的深度处,通过使用激光来形成从层的表面向内延伸的轮廓形状的凹槽,以移除一系列区域中的材料。 优选地,凹部具有圆顶形状,并且可以通过在计算机上运行的计算机辅助绘图程序来操作的直写激光器形成。 例如,可以生成包括近似圆的一组同心多边形的CAD图形文件,以创建圆顶结构。 可以通过修改多边形的偏移步距并将某些线宽等同于等效的激光工具定义来控制激光烧蚀深度。 优选地,激光工具定义与CAD图形组合,CAD图形限定了激光路径,使得所得到的几何形状不具有可能导致阀的隔膜撕裂或破裂的尖锐边缘。