公开(公告)号：US6029736A

公开(公告)日：2000-02-29

申请号：US921096

申请日：1997-08-29

申请人： Rajeev V. Naik ,  John Corrigan

发明人： Rajeev V. Naik ,  John Corrigan

IPC分类号： B22D27/04 ,  B22C9/04 ,  B22C9/10 ,  B22C9/12 ,  B22C9/18

CPC分类号： B22C9/18 ,  B22C9/106 ,  B22C9/12

摘要： A reinforced core for use in metal casting processes, especially directional solidification casting processes, comprises an elongated, thin-walled outer quartz or silica rich tubular member and a carbon base reinforcement disposed in and extending along a length of the tubular member. The carbon base reinforcement can comprise one or more graphite rods cemented together in end-to-end relation or a carbon fiber bundle. The carbon base reinforcement can include an outer carbide surface region by coating or surface reaction.

摘要翻译： 用于金属铸造工艺，特别是定向凝固铸造工艺的增强型芯包括细长的薄壁外部石英或富含硅石的管状构件以及沿管状构件的长度设置并沿其延伸的碳基增强件。 碳基增强件可以包括以端对端关系胶合在一起的一个或多个石墨棒或碳纤维束。 碳基增强材料可以通过涂覆或表面反应而包括外碳化物表面区域。

公开(公告)号：US06460599B1

公开(公告)日：2002-10-08

申请号：US10020490

申请日：2001-10-30

申请人： Rajeev V. Naik ,  John Corrigan

发明人： Rajeev V. Naik ,  John Corrigan

IPC分类号： B22C904

CPC分类号： B22C1/165 ,  B22C1/00 ,  B22C9/04 ,  Y10T29/49988

摘要： A ceramic investment shell mold is reinforced with a carbon based fibrous reinforcement having an extremely high tensile strength that increases as the mold temperature is increased especially within the range of casting temperatures employed for casting large directionally solidified industrial gas turbine components. The carbon based fibrous reinforcement is wrapped or otherwise positioned around the repeating ceramic slurry/stucco layers forming the intermediate thickness of the shell mold wall. The reinforced shell mold can be used to cast large directionally solidified industrial gas turbine components with accurate dimensional control.

公开(公告)号：US06364000B2

公开(公告)日：2002-04-02

申请号：US08935846

申请日：1997-09-23

申请人： Rajeev V. Naik ,  John Corrigan

发明人： Rajeev V. Naik ,  John Corrigan

IPC分类号： B22C900

CPC分类号： B22C1/165 ,  B22C1/00 ,  B22C9/04 ,  Y10T29/49988

摘要： A ceramic investment shell mold is reinforced with a carbon based fibrous reinforcement having an extremely high tensile strength that increases as the mold temperature is increased especially within the range of casting temperatures employed for casting large directionally solidified industrial gas turbine components. The carbon based fibrous reinforcement is wrapped or otherwise positioned around the repeating ceramic slurry/stucco layers forming the intermediate thickness of the shell mold wall. The reinforced shell mold can be used to cast large directionally solidified industrial gas turbine components with accurate dimensional control.

公开(公告)号：US06568458B2

公开(公告)日：2003-05-27

申请号：US10022470

申请日：2001-10-30

申请人： Rajeev V. Naik ,  John Corrigan

发明人： Rajeev V. Naik ,  John Corrigan

IPC分类号： B22C904

CPC分类号： B22C1/165 ,  B22C1/00 ,  B22C9/04 ,  Y10T29/49988

摘要： A ceramic investment shell mold is reinforced with a carbon based fibrous reinforcement having an extremely high tensile strength that increases as the mold temperature is increased especially within the range of casting temperatures employed for casting large directionally solidified industrial gas turbine components. The carbon based fibrous reinforcement is wrapped or otherwise positioned around the repeating ceramic slurry/stucco layers forming the intermediate thickness of the shell mold wall. The reinforced shell mold can be used to cast large directionally solidified industrial gas turbine components with accurate dimensional control.

公开(公告)号：US10826596B2

公开(公告)日：2020-11-03

申请号：US15902784

申请日：2018-02-22

申请人： Yash Vasavada ,  Channasandra Ravishankar ,  John Corrigan ,  Gaguk Zakaria ,  Xiaoling Huang

发明人： Yash Vasavada ,  Channasandra Ravishankar ,  John Corrigan ,  Gaguk Zakaria ,  Xiaoling Huang

IPC分类号： H04B7/185 ,  H04B7/204 ,  H01Q25/00

摘要： A system and method for estimating calibration parameters and locating a Calibration Earth Station (CES) is described. The method may be performed offline. The method includes: providing L×M pilot signal measurements in a matrix R from L CESs and the M feed elements, wherein the matrix R comprises a set of channel coefficients c={c1, c2, . . . , cM}, and k={k1, k2, . . . , kL} perturbations; linking a subset of channel coefficients {c1, c2, . . . , cM} using each of the L CESs; and estimating a relative estimate of the k={k1, k2, . . . , kL} pertubations across the L CESs by using each of the L CESs as a bridging element. In the method, the bridging element provides a strong pilot signal for at least two of the L CESs. A set of criteria for determining locations of CESs have been described. A set of desirable properties for the solution set of L CESs have been disclosed. A combination of inner loop and outer loop methods for determining the final set of optimal locations have been described.

公开(公告)号：US07234506B2

公开(公告)日：2007-06-26

申请号：US11431282

申请日：2006-05-10

申请人： Robert E. Grunstra ,  John Corrigan

发明人： Robert E. Grunstra ,  John Corrigan

IPC分类号： B22D29/00

CPC分类号： B22C9/103 ,  F05B2230/21

摘要： A ceramic core for use in casting an article such as for example an airfoil, wherein the ceramic core has a pocket located at or near a region of the core that is otherwise associated with occurrence of a localized casting defect in the cast article. A covering is disposed on the core to cover the pocket and provide core outer surface features.

公开(公告)号：USRE34702E

公开(公告)日：1994-08-23

申请号：US22307

申请日：1993-02-25

申请人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

发明人： Jan M. Lane ,  John Corrigan ,  Philip D. Crouch

IPC分类号： B22C9/04

CPC分类号： B22C9/04

摘要： A reinforced ceramic investment casting shell mold and method of making such mold. The ceramic investment casting shell mold includes alternate, repeating layers of a ceramic material and a ceramic stucco defining an overall thickness of the shell mold. A fibrous reinforcing material is disposed in the alternate, repeating layers at an intermediate thickness of the shell mold. The fibrous reinforcing material has high tensile strength at elevated temperature and a coefficient of thermal expansion that is less than the coefficient of thermal expansion of the ceramic material and the ceramic stucco. The fibrous reinforcing material is preferably woven into a twisted yarn and disposed in a generally spiral configuration.

公开(公告)号：US08707373B2

公开(公告)日：2014-04-22

申请号：US10843766

申请日：2004-05-12

申请人： Lin-Nan Lee ,  Mustafa Eroz ,  Feng-Wen Sun ,  John Corrigan ,  Walter Kepley ,  Kuriacose Joseph ,  Scott Casavant

发明人： Lin-Nan Lee ,  Mustafa Eroz ,  Feng-Wen Sun ,  John Corrigan ,  Walter Kepley ,  Kuriacose Joseph ,  Scott Casavant

IPC分类号： H04N7/18 ,  H04N7/173 ,  H04N7/16

CPC分类号： H04N7/106 ,  H04N7/20 ,  H04N21/4181 ,  H04N21/436 ,  H04N21/4382 ,  H04N21/6143 ,  H04N2007/1739

摘要： An approach is provided for distributing multi-media information from a satellite broadcast system. A hub receives a signal from the satellite broadcast system, wherein the signal represents video information and audio information associated with multiple broadcast channels. The hub centrally demodulates and decodes the received signal for distribution to one of a number of access point devices. According to one embodiment of the present invention, the decoded signal represents uncompressed video and audio information corresponding to one of the broadcast channels. The access point devices convert the received decoded signal for output respective displays (e.g., television sets). The hub can also be equipped with an interface to provide access to a public data network, such as the global Internet. Further, the hub can be supplied with a digital video recording capability.

摘要翻译： 提供了一种用于从卫星广播系统分发多媒体信息的方法。 集线器从卫星广播系统接收信号，其中信号表示与多个广播信道相关联的视频信息和音频信息。 集线器对接收到的信号进行集中解调和解码，以分配到多个接入点设备之一。 根据本发明的一个实施例，解码信号表示对应于一个广播信道的未压缩视频和音频信息。 接入点设备转换接收到的解码信号以输出相应的显示器（例如，电视机）。 集线器还可以配备接口，以提供对公共数据网络的访问，例如全球互联网。 此外，集线器可以被提供数字视频记录能力。

公开(公告)号：US20130121827A1

公开(公告)日：2013-05-16

申请号：US13298033

申请日：2011-11-16

申请人： Frank B. Stamps ,  Patrick Tisdale ,  John Corrigan

发明人： Frank B. Stamps ,  Patrick Tisdale ,  John Corrigan

IPC分类号： B64C27/51 ,  B21D53/78 ,  B64C11/04

CPC分类号： B64C27/51 ,  B64C27/635 ,  B64C29/0033 ,  Y10T29/49332

摘要： A rotor hub assembly and method for controlling movement of a rotor blade relative to a swashplate. The hub assembly having an attachment device operably associated with the rotor blade and the swashplate. The attachment device provides pivot and rotational blade movement relative to the swashplate. A dual spring-rate damper is operably associated with the attachment device. The damper switches between a first spring rate and a second spring rate during flight to control movement of the rotor blade. The method includes the process of switching the damper between the first spring rate and the second spring rate during flight.

摘要翻译： 用于控制转子叶片相对于斜盘的运动的转子轮毂组件和方法。 轮毂组件具有可操作地与转子叶片和旋转斜盘相关联的附接装置。 附接装置提供相对于斜盘的枢转和旋转刀片运动。 双弹簧阻尼器与附接装置可操作地相关联。 减速器在飞行期间在第一弹簧速率和第二弹簧刚度之间切换以控制转子叶片的运动。 该方法包括在飞行期间在第一弹簧刚度和第二弹簧刚度之间切换阻尼器的过程。

公开(公告)号：US08241560B2

公开(公告)日：2012-08-14

申请号：US10424589

申请日：2003-04-28

申请人： John Corrigan ,  Michael G. Launsbach ,  John R. Mihalisin

发明人： John Corrigan ,  Michael G. Launsbach ,  John R. Mihalisin

IPC分类号： C22C19/05

CPC分类号： C22C19/057 ,  F01D5/28 ,  F05C2201/0466 ,  F05D2300/131 ,  F05D2300/132 ,  F05D2300/133 ,  F05D2300/1723

摘要： A single crystal nickel base superalloy consists essentially of, in weight %, about 6.4% to about 6.8% Cr, about 9.3% to about 10.0% Co, above 6.7% to about 8.5% Ta, about 5.45% to about 5.75% Al, about 6.2% to about 6.6% W, about 0.5% to about 0.7% Mo, about 0.8% to about 1.2% Ti, about 2.8% to about 3.2% Re, up to about 0.12% Hf, about 0.01% to about 0.08% by weight C, up to about 0.10% B, and balance Ni and incidental impurities. The superalloy provides improved alloy cleanliness and castability while providing improved high temperature mechanical properties such as stress rupture life.

摘要翻译： 单晶镍基超级合金基本上由重量％，约6.4％至约6.8％的Cr，约9.3％至约10.0％的Co，高于6.7％至约8.5％的Ta，约5.45％至约5.75％的Al， 约6.2％至约6.6％的W，约0.5％至约0.7％的Mo，约0.8％至约1.2％的Ti，约2.8％至约3.2％的Re，至多约0.12％的Hf，约0.01％至约0.08％ 的C，高达约0.10％的B，并且平衡Ni和附带的杂质。 超耐热合金提供改善的合金清洁度和铸造性，同时提供改善的高温机械性能，如应力断裂寿命。