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1. 发明授权

US07766751B2 Torque limiting devices for actuators 有权
标题翻译：用于执行机构的扭矩限制装置
公开(公告)号：US07766751B2
公开(公告)日：2010-08-03
申请号：US11858709
申请日：2007-09-20
申请人： Donald J. Christensen , Brian Jardine , Don L. Mittendorf
发明人： Donald J. Christensen , Brian Jardine , Don L. Mittendorf
IPC分类号： F16D9/02
CPC分类号： F16D7/08 , G05G1/082
摘要： A torque limiting includes first and second rotational plates, first and second springs, and a slip device. The first rotational plate is coupled to a torque input device. The second rotational plate is coupled to a drive shaft, and is configured to be movable along an axial direction thereof. The first spring has a first free length, and exerts a first spring force against the second rotational plate toward the first rotational plate. The second spring has a second free length, smaller than the first free length, and selectively exerts a second spring force against the second rotational plate toward the first rotational plate. The slip device, disposed at least partially within or between the first and second rotational plates, causes relative motion between the first and second rotational plates when torque overcomes the combined first and second spring forces exerted against the second rotational plate.
摘要翻译：扭矩限制包括第一和第二旋转板，第一和第二弹簧以及滑动装置。第一旋转板联接到扭矩输入装置。第二旋转板联接到驱动轴，并且构造成可沿其轴向方向移动。第一弹簧具有第一自由长度，并且朝向第一旋转板施加抵靠第二旋转板的第一弹簧力。第二弹簧具有比第一自由长度小的第二自由长度，并且朝向第一旋转板选择性地向第二旋转板施加第二弹簧力。当扭矩克服施加在第二旋转板上的组合的第一和第二弹簧力时，滑动装置至少部分地设置在第一和第二旋转板之中或之间，引起第一和第二旋转板之间的相对运动。

2. 发明申请

US20090078524A1 TORQUE LIMITING DEVICES FOR ACTUATORS 有权
标题翻译：用于执行器的扭矩限制装置
公开(公告)号：US20090078524A1
公开(公告)日：2009-03-26
申请号：US11858709
申请日：2007-09-20
申请人： Donald J. Christensen , Brian Jardine , Don L. Mittendorf
发明人： Donald J. Christensen , Brian Jardine , Don L. Mittendorf
IPC分类号： F16D43/20
CPC分类号： F16D7/08 , G05G1/082
摘要： A torque limiting includes first and second rotational plates, first and second springs, and a slip device. The first rotational plate is coupled to a torque input device. The second rotational plate is coupled to a drive shaft, and is configured to be movable along an axial direction thereof. The first spring has a first free length, and exerts a first spring force against the second rotational plate toward the first rotational plate. The second spring has a second free length, smaller than the first free length, and selectively exerts a second spring force against the second rotational plate toward the first rotational plate. The slip device, disposed at least partially within or between the first and second rotational plates, causes relative motion between the first and second rotational plates when torque overcomes the combined first and second spring forces exerted against the second rotational plate.
摘要翻译：扭矩限制包括第一和第二旋转板，第一和第二弹簧以及滑动装置。第一旋转板联接到扭矩输入装置。第二旋转板联接到驱动轴，并且构造成可沿其轴向方向移动。第一弹簧具有第一自由长度，并且朝向第一旋转板施加抵靠第二旋转板的第一弹簧力。第二弹簧具有比第一自由长度小的第二自由长度，并且朝向第一旋转板选择性地向第二旋转板施加第二弹簧力。当扭矩克服施加在第二旋转板上的组合的第一和第二弹簧力时，滑动装置至少部分地设置在第一和第二旋转板之中或之间，引起第一和第二旋转板之间的相对运动。

3. 发明申请

US20090062159A1 NON-LUBRICATED COMPONENTS AND MACHINE SYSTEMS AND VEHICLES INCLUDING THE COMPONENTS 审中-公开
标题翻译：非润滑组件和机器系统以及包括组件的车辆
公开(公告)号：US20090062159A1
公开(公告)日：2009-03-05
申请号：US11848715
申请日：2007-08-31
申请人： Don L. Mittendorf , Donald J. Christensen , Adam Q. Tejada
发明人： Don L. Mittendorf , Donald J. Christensen , Adam Q. Tejada
IPC分类号： F16C33/12 , F16C17/00
CPC分类号： F16C33/12 , F16C33/122 , F16D1/06 , F16D1/10 , F16D2001/103 , F16D2300/10
摘要： A non-lubricated component configured to have friction contact with another component and machine systems including the component are provided. In an embodiment, by way of example only, the non-lubricated component includes an outer surface consisting essentially of rhenium having a purity of at least 99%, by weight. The outer surface of the non-lubricated component is capable of being substantially wear- and gall-resistant when contacted by another component at a stress of above 50 ksi.
摘要翻译：提供了一种非润滑部件，其构造成与另一部件摩擦接触并且包括该部件的机器系统。在一个实施方案中，仅作为示例，非润滑组分包括基本上由纯度至少为99重量％的铼组成的外表面。非润滑部件的外表面在高于50ksi的应力下被另一部件接触时能够基本上具有耐磨性和耐磨性。

4. 发明申请

US20080141803A1 Electromechanical linear actuator including an environmental control and air management system 审中-公开
标题翻译：机电线性执行器，包括环境控制和空气管理系统
公开(公告)号：US20080141803A1
公开(公告)日：2008-06-19
申请号：US11588688
申请日：2006-10-26
申请人： Donald J. Christensen , Don L. Mittendorf , Adam Q. Tejada
发明人： Donald J. Christensen , Don L. Mittendorf , Adam Q. Tejada
IPC分类号： F16H27/02
CPC分类号： F16H25/20 , F16H25/2418 , F16H57/027 , Y10T74/18712
摘要： An actuator that at least inhibits the deleterious effects of corrosive fluids, such as salt-laden air, does not rely on relatively expensive materials. At least a portion of the actuator housing is sealed from the surrounding salt-laden air, and is in fluid communication with an air reservoir that includes a supply of relatively salt-free, or substantially salt-free, air. The actuator is configured to exchange air between the air reservoir and the actuator housing, thereby at least substantially inhibiting the ingress of salt-laden air into much of the actuator.
摘要翻译：至少抑制腐蚀性液体（例如含盐的空气）的有害影响的致动器不依赖于相对昂贵的材料。致动器壳体的至少一部分与周围的含盐空气密封，并且与包括相对无盐或基本上无盐的空气的空气储存器流体连通。致动器构造成在空气储存器和致动器壳体之间更换空气，从而至少基本上禁止含盐空气进入致动器的大部分。

5. 发明申请

US20080308425A1 CORROSION AND WEAR RESISTANT COATING FOR MAGNETIC STEEL 审中-公开
标题翻译：用于磁钢的耐腐蚀和耐磨涂层
公开(公告)号：US20080308425A1
公开(公告)日：2008-12-18
申请号：US11761921
申请日：2007-06-12
申请人： Don L. Mittendorf , Amer Aizaz
发明人： Don L. Mittendorf , Amer Aizaz
IPC分类号： C23C28/02 , B05D5/12
CPC分类号： C23C18/32
摘要： A method is provided for manufacturing a magnetic steel component. An electroless nickel plating is formed on a substrate that includes magnetic steel. A thermal cycle is thereafter performed at a temperature that is sufficiently high to sinter the electroless nickel plating and thereby form a densified plating on the substrate. According to one embodiment, the thermal cycle includes a solid state diffusion sintering process wherein the substrate and the densified plating are heated to a temperature of at least about 1300° F. (about 704° C.) but.below the melting temperature of the electroless nickel plating. According to another embodiment, the thermal cycle includes a transient liquid phase sintering process wherein the substrate and the densified plating are heated at least to the melting temperature of the electroless plating.
摘要翻译：提供了制造磁钢部件的方法。在包括磁钢的基板上形成化学镀镍。此后在足够高的温度下进行热循环以烧结无电镀镍，从而在基板上形成致密的电镀。根据一个实施方案，热循环包括固态扩散烧结方法，其中将基材和致密化的电镀加热至至少约1300°F（约704℃）的温度，但是低于化学镀镍。根据另一个实施例，热循环包括瞬态液相烧结工艺，其中将基材和致密化的镀层加热至化学镀的熔融温度。

6. 发明授权

US07509738B2 Solid-free-form fabrication of hot gas valve discs 有权
标题翻译：固体自由形式制造热气阀盘
公开(公告)号：US07509738B2
公开(公告)日：2009-03-31
申请号：US11192873
申请日：2005-07-28
申请人： Robbie J. Adams , Don L. Mittendorf , Scott M. Sperl
发明人： Robbie J. Adams , Don L. Mittendorf , Scott M. Sperl
IPC分类号： B05D3/00 , B21B1/46 , B21D53/00 , F16K1/42 , H05H1/24
CPC分类号： F16K25/005 , B33Y10/00 , B33Y80/00 , Y10T29/49346 , Y10T29/49405 , Y10T29/49421 , Y10T29/49968 , Y10T29/49972 , Y10T29/49982
摘要： A hot gas valve disc for a divert and attitude control disc switching element used in a propelled craft. The hot gas valve disc comprises a first layer comprising a first metal material having a first grain size and a first grain orientation, and at least one additional layer comprising a second metal material having a second grain size that differs from the first grain size, or a second grain orientation that differs from the first grain orientation. A method of manufacturing the hot gas valve disc comprises the steps of fabricating a first metal layer using a solid-free-form fabrication process, the first metal layer having a set of grain characteristics comprising grain size and grain structure, followed by heating the first layer and thereby changing at least one of the grain characteristics.
摘要翻译：用于推进工艺中的转向和姿态控制盘开关元件的热气阀盘。热气阀盘包括第一层，其包括具有第一晶粒尺寸和第一晶粒取向的第一金属材料，以及至少一个附加层，其包括具有与第一晶粒尺寸不同的第二晶粒尺寸的第二金属材料，或与第一颗粒取向不同的第二颗粒取向。制造热气阀盘的方法包括以下步骤：使用无固体形式的制造工艺制造第一金属层，第一金属层具有包括晶粒尺寸和晶粒结构的一组晶粒特性，然后加热第一从而改变晶粒特性中的至少一个。

7. 发明授权

US06902809B1 Rhenium tantalum metal alloy 失效
标题翻译：铼钽金属合金
公开(公告)号：US06902809B1
公开(公告)日：2005-06-07
申请号：US10880912
申请日：2004-06-29
申请人： Don L. Mittendorf
发明人： Don L. Mittendorf
IPC分类号： B32B9/04 , B32B15/04 , C22C1/04 , F01D5/28 , F02K9/97 , C22C27/00
CPC分类号： C22C1/06 , B22F2998/10 , B32B9/04 , B32B15/04 , C22C1/045 , F01D5/28 , F02K9/97 , F05D2230/22 , Y10T428/30 , Y10T428/31678 , B22F1/0003 , B22F3/02 , B22F3/10 , B22F3/18
摘要： The present invention provides a method for preparing a rhenium-tantalum alloy with improved strength and ductility characteristics. The method includes mixing powders of rhenium and tantalum with a weight ration of approximately 97% rhenium to approximately 3% tantalum. The powdered blend is then compressed to a green state. The green compress of rhenium and tantalum is then sintered such that tantalum goes into solid solution with rhenium. The sintered material is then cold rolled. The cold rolling disperses oxides away from concentrations in the alloy grain boundaries. If desired, the alloy may then be annealed. The result is a rhenium-tantalum alloy that displays improved high temperature strength and ductility over pure rhenium materials. The present alloy is particularly suited to fabrication of rocketry components such as valve bodies, poppets, seats, and nozzles.
摘要翻译：本发明提供一种制备具有改善的强度和延展性特征的铼 - 钽合金的方法。该方法包括将铼和钽的粉末与大约97％的铼的重量比混合到约3％的钽。然后将粉末状混合物压缩至绿色状态。然后烧结铼和钽的绿色压片，使得钽与铼进入固溶体。然后将烧结材料冷轧。冷轧使氧化物远离合金晶界的浓度。如果需要，然后合金可以退火。结果是铼 - 钽合金显示出比纯铼材料提高的高温强度和延展性。本发明的合金特别适用于制造火箭部件，例如阀体，喷嘴，座椅和喷嘴。

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