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    • 1. 发明授权
    • Guide vane assembly
    • 导叶总成
    • US06764276B2
    • 2004-07-20
    • US10201195
    • 2002-07-24
    • Thomas G MulcaireMichael T HoldsworthRichard Evans
    • Thomas G MulcaireMichael T HoldsworthRichard Evans
    • F01D904
    • F02C7/045F01D5/00F01D9/041F02K3/04F04D29/667F04D29/681F05D2240/55F05D2250/191F05D2250/283F05D2260/96
    • A fan outlet guide vane assembly (36) for a turbofan gas turbine engine (10) comprises a fan casing (32) and a plurality of circumferentially spaced radially extending fan outlet guide vanes (34). The fan outlet guide vanes (34) are secured at their radially outer ends to the fan casing (32). A plurality of panels (40) are secured to the fan casing (32). Each panel (40) is arranged between two adjacent fan outlet guide vanes (34) to define the flow path between the fan outlet guide vanes (34). Each panel (40) comprises a perforated skin (42) and a honeycomb structure (44) to form an acoustic treatment structure. The perforated skin (42) defines the flow path between the fan outlet guide vanes (34). The pressure equalization across the panels (40) minimises the possibility of the panels (40) being removed.
    • 用于涡轮风扇燃气涡轮发动机(10)的风扇出口导叶组件(36)包括风扇壳体(32)和多个周向间隔开的径向延伸的风扇出口导叶(34)。 风扇出口导叶(34)在其径向外端处固定到风扇壳体(32)。 多个面板(40)固定在风扇壳体(32)上。 每个面板(40)布置在两个相邻的风扇出口导叶(34)之间,以限定风扇出口导叶(34)之间的流动路径。 每个面板(40)包括穿孔皮肤(42)和蜂窝结构(44),以形成声学处理结构。 穿孔皮肤(42)限定了风扇出口导叶(34)之间的流动路径。 跨越面板(40)的压力平衡使得面板(40)被移除的可能性最小化。
    • 9. 发明授权
    • Glass grinding system and method
    • 玻璃研磨系统及方法
    • US08029336B1
    • 2011-10-04
    • US12082308
    • 2008-04-10
    • Keith ThomasRichard EvansCody ThomasAdam Thomas
    • Keith ThomasRichard EvansCody ThomasAdam Thomas
    • B24B7/24
    • B24B7/241
    • A glass grinding method starts with an assessment of the scratch or surface defect to be removed. A series of abrasive pads with different diameters and different grits from 60, 120, 180, 220, and 400 grit are selected according to the depth of the scratches or defects on the glass, and is installed on a handheld circular grinder. The work area is restricted to an imaginary area around the scratch that is two times the length of the scratch squared. The area is worked and feathered out with successively finer and finer dry abrasive pads applied flat on the surface of the glass. During this process, the glass surface temperatures are monitored and not allowed to exceed 150° F. Any glass powders that stick and build up on the abrasive disk faces are knocked off by slapping them with wire brushes or rasps. They are not brushed off. In a final pre-polishing stage, the powders are allowed to build to gradually reduce the cutting action and produce a finer surface. When the glass has only a haze left to remove, cerium oxide powders mixed in water are misted from a spray bottle onto a felt pad installed on the grinder. The area is outlined with a dry-grease marker applied on the backside of the glass.
    • 玻璃研磨方法从评估待除去的划痕或表面缺陷开始。 根据玻璃上的划痕或缺陷的深度选择一系列具有60,120,180,220和400砂粒的不同直径和不同磨粒的研磨垫,并安装在手持式圆形磨床上。 工作区域限制在划痕周围的假想区域,是划痕长度的两倍。 该地区的工作和羽化,连续更细和更干净的研磨垫平坦地涂在玻璃的表面上。 在此过程中,玻璃表面的温度被监测,不允许超过150°F。通过用丝刷或锉刀打击,可以将任何粘结并积聚在磨盘表面上的任何玻璃粉末撞倒。 他们没有刷掉。 在最终的预抛光阶段,允许粉末构造以逐渐减少切割作用并产生更细的表面。 当玻璃只剩下雾霭时,将混合在水中的氧化铈粉末从喷雾瓶中雾化到安装在研磨机上的毡垫上。 该区域用涂在玻璃背面的干油脂标记来表示。
    • 10. 发明授权
    • System and methods for improved ultrasound imaging
    • 用于改善超声成像的系统和方法
    • US07850611B2
    • 2010-12-14
    • US10945459
    • 2004-09-20
    • Timothy J. DaviesRichard Evans
    • Timothy J. DaviesRichard Evans
    • A61B8/00
    • G01S7/52028A61B8/4483G01S7/52003G01S7/52036G01S7/52046G01S15/8918G01S15/8927
    • Systems and methods are disclosed for improving the resolution and quality of an image formed by signals from an array of receivers. Multiple receivers introduce variations in arrival times that can be less than the period of an operating signal, and also less than the period associated with a sampling operation. Thus, multiple receivers allow sampling of fine features of reflected signals that would be considered beyond the resolution associated with the operating signal. Use of multiple receivers also provides an effective sampling rate that is greater than the sampling rate of an individual receiver. Similar advantages can be obtained using multiple transmitters. Such advantageous features can be used to obtain high resolution images of objects in a medium in applications such as ultrasound imaging.
    • 公开了用于提高由来自接收器阵列的信号形成的图像的分辨率和质量的系统和方法。 多个接收器引入到达时间的变化,其可以小于操作信号的周期,并且还小于与采样操作相关联的周期。 因此,多个接收器允许对将被认为超出与操作信号相关联的分辨率的反射信号的精细特征进行采样。 使用多个接收器还提供了大于单个接收机的采样率的有效采样速率。 使用多个发射机可以获得类似的优点。 可以使用这样的有利特征来获得诸如超声成像的应用中的介质中的物体的高分辨率图像。