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1. 发明授权

US07665969B2 Assembly for providing flexure to blade system 有权
标题翻译：用于向刀片系统提供弯曲的组件
公开(公告)号：US07665969B2
公开(公告)日：2010-02-23
申请号：US11040173
申请日：2005-01-24
申请人： Frank B. Stamps , Patrick R. Tisdale , James L. Braswell , Charles L. Baskin, Jr. , Tom Campbell , Timothy K. Ledbetter , Joseph J. Zierer , D. J. Reddy , Mark A. Wiinikka , Ronnie L. Martin , David A. Haynie , Stanley Gene Sadler , Ron Measom , Paul Oldroyd , Tricia Hiros , Jim Harse , Bob Mullins
发明人： Frank B. Stamps , Patrick R. Tisdale , James L. Braswell , Charles L. Baskin, Jr. , Tom Campbell , Timothy K. Ledbetter , Joseph J. Zierer , D. J. Reddy , Mark A. Wiinikka , Ronnie L. Martin , David A. Haynie , Stanley Gene Sadler , Ron Measom , Paul Oldroyd , Tricia Hiros , Jim Harse , Bob Mullins
IPC分类号： B63H1/06
CPC分类号： B64C27/48 , B64C27/33
摘要： An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces having a layer of cushioning material positioned thereon and secured thereto. The layer of cushioning material extending along and following the general contour of yoke surface, and the layer of cushioning material directly contacting a support plate. Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle.
摘要翻译：一种用于向旋转刀片系统的刀片提供弯曲的组件，该组件包括具有上曲面的上支撑板，具有下弯曲表面的下支撑板和位于其间的轭。上和下磁轭表面中的至少一个具有定位在其上并固定到其上的缓冲材料层。缓冲材料层沿着轭铁表面的一般轮廓延伸并且沿着磁体表面的一般轮廓延伸，并且缓冲材料层直接接触支撑板。另一个实施例是用于向旋转刀片系统的刀片提供弯曲的组件，包括具有上曲面的上支撑板，具有下弯曲表面的下支撑板和位于其间的直接接触支撑板其中一个弯曲表面是不形成圆周的一部分的非圆弧。

2. 发明授权

US06443273B1 Compact vibration cancellation device 有权
标题翻译：紧凑型振动消除装置
公开(公告)号：US06443273B1
公开(公告)日：2002-09-03
申请号：US09939127
申请日：2001-08-24
申请人： Timothy K. Ledbetter , Brad Stamps , David Popelka , Christopher M. Bothwell , Michael Reaugh Smith
发明人： Timothy K. Ledbetter , Brad Stamps , David Popelka , Christopher M. Bothwell , Michael Reaugh Smith
IPC分类号： B64D4700
CPC分类号： B64C27/001 , B64C2027/005 , F16F7/116
摘要： The present invention relates to an improved vibration cancellation device designed to overcome many of the shortcomings inherent in prior devices. In many embodiments, the vibration cancellation device is smaller in scale than prior designs, facilitating more versatility with respect to design options. The device of the present invention achieves a smaller size partly due to the use of suspension springs having an offset, rather than a parallel arrangement.
摘要翻译：本发明涉及一种设计用于克服现有设备中固有的许多缺点的改进的减震装置。在许多实施例中，振动消除装置的规模比现有设计小，有助于相对于设计选项的更多的通用性。本发明的装置部分地由于使用具有偏移而不是平行布置的悬架弹簧而实现较小的尺寸。

3. 发明授权

US5358381A Yoke for helicopter rotor systems 失效
标题翻译：直升机转子系统的轭
公开(公告)号：US5358381A
公开(公告)日：1994-10-25
申请号：US34345
申请日：1993-03-19
申请人： Cecil E. Covington , Timothy K. Ledbetter , Ernest A. Powell , Madison K. Robinson , Ajay Sehgal , Patrick R. Tisdale
发明人： Cecil E. Covington , Timothy K. Ledbetter , Ernest A. Powell , Madison K. Robinson , Ajay Sehgal , Patrick R. Tisdale
IPC分类号： B29C70/86 , B64C27/33 , B64C27/38
CPC分类号： B64C27/33 , B29C70/86 , B29K2105/101 , B29L2031/08
摘要： An improved feathering flexure for a helicopter rotor system yoke includes, in transverse cross section, a relatively thin central web and six relatively thin flanges. Three flanges extend from each of the web's two edges, and the flanges lie in planes which are approximately radial relative to the neutral feathering axis of the feathering flexure. The feathering flexure is constructed of fiberglass material embedded in a polymer matrix. The web's fiberglass material in the web is bias material, that is, material whose glass fibers are oriented at plus or minus 45 degrees relative to the yoke's spanwise axis. In transverse cross section, each of the flanges includes two unidirectional belts disposed on either side of a bias pack. The glass fibers in the unidirectional belts are oriented parallel to the yoke's spanwise axis. The fiberglass material in the bias packs is bias material. Each flange's unidirectional belts taper inwardly toward its bias pack adjacent to web, thereby decreasing the thickness of the flange adjacent to the web. In addition, the portion of each flange adjacent to the web is configured to minimize torsional rigidity and shear stress resulting from twisting the feathering flexure.
摘要翻译：用于直升机转子系统轭的改进的羽化挠曲在横截面中包括相对薄的中心腹板和六个相对薄的凸缘。三个凸缘从每个腹板的两个边缘延伸，并且凸缘位于相对于羽化挠曲件的中性羽化轴线大致径向的平面中。羽化挠曲由嵌入聚合物基体中的玻璃纤维材料构成。幅材中的纤维网玻璃纤维材料是偏压材料，即玻璃纤维相对于轭的翼展轴线以正或负45度取向的材料。在横截面中，每个凸缘包括设置在偏置组件的任一侧上的两个单向皮带。单向带中的玻璃纤维平行于轭的翼展轴定向。偏置组件中的玻璃纤维材料是偏压材料。每个凸缘的单向带向内逐渐朝着与卷材相邻的偏压组件向内逐渐变细，从而减小了与卷材相邻的凸缘的厚度。另外，与腹板相邻的每个凸缘的部分被构造成使扭转刚度和由于弯曲挠曲而产生的剪切应力最小化。

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