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    • 2. 发明授权
    • Distributed control DAMA protocol for use with a processing communications satellite
    • 分布式控制DAMA协议,用于处理通信卫星
    • US06621801B1
    • 2003-09-16
    • US09162514
    • 1998-09-29
    • David A. WrightJaime L. PrietoScott L. Wilkinson
    • David A. WrightJaime L. PrietoScott L. Wilkinson
    • H04B7204
    • H04B7/18582
    • A distributed demand assigned multiple access control scheme for use in connection with a processing satellite communications system, where multiple users are assigned to a common transmission resource as part of a sharing set. The control scheme of the invention makes use of a reservation procedure by transmitting set addressed reservation messages in a contentious control flow to reserve data transfer time in a non-contentious main flow. Each user of the sharing set is synchronized to the next available uplink time slot available to transmit data in the main flow. If a transmitted reservation message is returned in the satellite downlink, the terminal knows that all of the users of the set received the message. That reserved time interval in the main flow Is now owned by that user, and each user in the shared set updates its next available uplink time slot based on the reserved time.
    • 分配的需求分配多个访问控制方案,用于与处理卫星通信系统结合使用,其中多个用户被分配给作为共享集合的一部分的公共传输资源。 本发明的控制方案通过在有争议的控制流中发送设置的寻址预留消息来利用预留过程,以在非争用主流中保留数据传输时间。 共享集合的每个用户被同步到可用于在主流中传送数据的下一个可用上行链路时隙。 如果在卫星下行链路中返回传输的预留消息,则终端知道该组的所有用户接收到该消息。 主流中的保留时间间隔现在由该用户拥有,共享集中的每个用户根据预留时间更新其下一个可用的上行链路时隙。
    • 3. 发明授权
    • Spindle for machine tool
    • 机床主轴
    • US06481508B2
    • 2002-11-19
    • US09730216
    • 2000-12-05
    • William D. McGlassonDavid A. WrightMichael W. RobertsAnthony J. Norselli
    • William D. McGlassonDavid A. WrightMichael W. RobertsAnthony J. Norselli
    • B24B2116
    • B23F23/006B23F19/02B23Q5/04B23Q11/0032
    • A spindle (60) for a machine tool comprising a rear spindle portion (62) and a forward spindle portion (64) with each of the rear spindle portion and the forward spindle portion being rotatable about the same axis relative to one another. The inventive spindle includes one or more spring elements (68) extending between the rear spindle portion and the forward spindle portion whereby with the forward spindle portion and the rear spindle portion rotating at a predetermined amount and with the rotation of the forward spindle portion being constrained at that amount, an additional rotation applied to the rear spindle portion results in a deflection of the springs thereby effecting a torque between the forward and the rear spindle portions. The present invention also includes a control method which has as its objective to control the position of, not the torque applied to, one of the spindles, usually the gear member spindle. In this method, the gear member spindle position is controlled relative to the pinion member spindle position by a computer numerical control (CNC). As the pinion member is turned at some speed, the gear member is kept in coordination with the pinion (according to their ratio) by the CNC control. The gear member spindle can be commanded to include additional rotational components which, in effect, advance or retard the gear rotation relative to the pinion.
    • 一种用于机床的心轴(60),其包括后心轴部分(62)和前心轴部分(64),后心轴部分和前心轴部分中的每一个可相对于彼此绕同一轴线旋转。 本发明的心轴包括一个或多个在后心轴部分和前心轴部分之间延伸的弹簧元件(68),由此通过前心轴部分和后心轴部分以预定量旋转,并且前心轴部分的旋转被约束 以这种量,施加到后心轴部分的附加旋转导致弹簧的偏转,从而实现前和后心轴部分之间的扭矩。 本发明还包括一种控制方法,其目的在于控制施加于其中一个主轴(通常是齿轮构件主轴)的位置而不是扭矩。 在这种方法中,通过计算机数控(CNC)相对于小齿轮主轴位置控制齿轮主轴位置。 当小齿轮部件以某种速度转动时,齿轮部件通过CNC控制与小齿轮(根据它们的比例)保持配合。 齿轮构件主轴可以被命令包括额外的旋转部件,其实际上相对于小齿轮推进或延迟齿轮旋转。
    • 5. 发明授权
    • Bearings
    • 轴承
    • US5374125A
    • 1994-12-20
    • US915653
    • 1992-07-21
    • David R. McMurtryDavid A. Wright
    • David R. McMurtryDavid A. Wright
    • F16C32/06B23Q1/26F16C29/02
    • F16C32/06B23Q1/26F16C29/02F16C29/025F16C32/0603
    • A machine is disclosed having novel air bearings for supporting one machine part for translational movement on another part in a first direction X. Each bearing takes the form of a track (5A,14,16) on one of the parts providing concave part-cylindrical bearing surfaces (5A,14A,16A) and pads 25 on the other part providing confronting convex part-cylindrical bearing surfaces 25A. The arc lengths of the part-cylindrical bearing surfaces are such as to provide restraint against relative movements between the machine parts in at least one sense of both of the two directions (Y,Z) orthogonal to the direction (X) of the translational movement. The advantages are relative cheapness of manufacture compared to vee-bearings and a capability of the bearings to self-align under load.
    • 公开了一种具有新颖的空气轴承的机器,用于在第一方向X上的另一部分上支撑用于平移运动的一个机器部件。每个轴承在其中一个部件上形成轨道(5A,14,16)的形式,提供凹部分圆柱形 轴承表面(5A,14A,16A)和另一部分上的垫25提供面对的凸形部分圆柱形支承表面25A。 部分圆柱形支承表面的弧长度能够以与平移运动方向(X)正交的两个方向(Y,Z)两个方向的至少一个方向提供机械部件之间相对运动的限制 。 与vee轴承相比,优点是制造相对便宜,并且轴承在负载下自对准的能力。
    • 6. 发明授权
    • Survival kit air deployable apparatus and method
    • 生存套件空气展开装置及方法
    • US4639229A
    • 1987-01-27
    • US703530
    • 1985-02-20
    • David A. WrightDavid B. Webb
    • David A. WrightDavid B. Webb
    • B63C9/01B64D1/02B63C9/04
    • B64D1/02
    • An apparatus and method for airplane deployment over water of survival kit apparatus is provided. A pair of deflated, inflatable rafts are contained in a rigid container shell having a removable tail cone. A stabilizer drogue may be used to longitudinally stabilize the container prior to tail cone release and assist with the tail cone removal after release. The tail cone is mechanically released and removed from the container shell at a predetermined time after deployment from an aircraft, thereby pemitting the container shell contents to be removed. The life rafts are contained in the container shell so that one life raft having associated with it an aerodynamic brake is released after the tail cone has been removed, with the container and second life raft continuing their trajectory downwards. The rope joining the two life rafts is continuously payed out as the first left raft falls to the water and the container with the second life raft therein continues its trajectory. The second life raft is removed from the container shell mechanically after the container shell contacts the surface of the water. The apparatus and method of the invention results in the pair of inflated rope-joined life rafts being deployed on the water surface at spaced locations.
    • 提供了一种用于飞机在生存套装置上部署水的装置和方法。 一对放气的可充气筏被装在具有可移除的尾锥的刚性容器壳体中。 在尾锥释放之前,可以使用稳定剂锥套来纵向稳定容器,并且在释放后有助于尾锥去除。 在从飞行器展开之后的预定时间,将尾锥机械地释放并从容器壳体中移除,从而引发要移除的容器壳体的内容物。 救生筏被包含在容器壳体中,使得在尾部锥体已经被移除之后释放出与气动制动器相关联的一个救生筏,容器和第二救生筏将其轨迹向下延伸。 连接两条救生筏的绳索不断地被支付,因为第一个左筏落在水面上,第二个救生筏的集装箱继续运行。 在容器壳体接触到水面之后,将第二个救生筏机械地从容器壳体中取出。 本发明的装置和方法导致一对充气的绳索连接的救生筏在间隔的位置处部署在水面上。
    • 7. 发明授权
    • Multidimensional data input interface
    • 多维数据输入接口
    • US08645864B1
    • 2014-02-04
    • US11934956
    • 2007-11-05
    • David A. Wright
    • David A. Wright
    • G06F3/048
    • G06F3/04847
    • Embodiments of the invention provide an interface for simultaneously inputting multiple data parameters for a software application. Generally, a single user input made using the input interface results in multiple data parameters being received by the application. In one embodiment, the input interface may be defined with a plurality of dimensional nodes, where each dimensional node corresponds to a dimension of input that may be specified for the software application using the input interface.
    • 本发明的实施例提供了一种用于同时输入用于软件应用的多个数据参数的接口。 通常,使用输入接口进行的单个用户输入导致应用程序接收到多个数据参数。 在一个实施例中,可以使用多个维度节点定义输入接口,其中每个维度节点对应于可以使用输入接口为软件应用程序指定的输入的维度。