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1. 发明申请

US20050124307A1 Low cost broadband wireless communication system 审中-公开
标题翻译：低成本宽带无线通信系统
公开(公告)号：US20050124307A1
公开(公告)日：2005-06-09
申请号：US11005626
申请日：2004-12-06
申请人： Danny Ammar , David Bills
发明人： Danny Ammar , David Bills
IPC分类号： H04B1/38 , H04H1/00
CPC分类号： H04B1/38
摘要： This present invention includes an indoor unit (IDU) and compact outdoor unit (ODU) having an intermediate frequency/modem circuit, millimeter wave transceiver circuit, and digital interface between the IDU and the ODU capable of up to about 100 MBps data rate over at least about a 300 meter cable. The system uses a conversion to the polar coordinate system completes calculations in the polar coordinate system, reducing the computational requirements, and therefore, the size and cost of the system.
摘要翻译：本发明包括具有中频/调制解调器电路，毫米波收发器电路的室内单元（IDU）和紧凑型室外单元（ODU），以及在IDU和ODU之间的数字接口，其能够高达约100MBps的数据速率至少约300米的电缆。系统使用极坐标系的转换，在极坐标系中完成计算，减少了计算量，降低了系统的体积和成本。

2. 发明申请

US20060022662A1 Switched measuring system and method for measuring radiant signals 有权
标题翻译：开关测量系统和辐射信号测量方法
公开(公告)号：US20060022662A1
公开(公告)日：2006-02-02
申请号：US11176467
申请日：2005-07-07
申请人： David Bills
发明人： David Bills
IPC分类号： G01S3/02 , G01J5/00
CPC分类号： G01K11/006
摘要： A system for measuring radiant signals includes a detector circuit for detecting a time multiplexed, measured radiant signal and reference signal. A switch is connected to the detector circuit for receiving signals from the detector circuit. A measured signal sampling circuit, a reference signal sampling circuit, a measured alias circuit and a reference alias circuit are connected to the switch, which is operative for switching among the sampling and alias circuits to remove sampling noise and improve switching latency.
摘要翻译：用于测量辐射信号的系统包括用于检测时间多路复用，测量的辐射信号和参考信号的检测器电路。开关连接到检测器电路，用于从检测器电路接收信号。测量信号采样电路，参考信号采样电路，测量别名电路和参考别名电路连接到开关，用于在采样和别名电路之间切换以消除采样噪声并提高开关延迟。

3. 发明授权

US4294315A Landing nipple 失效
标题翻译：着陆乳头
公开(公告)号：US4294315A
公开(公告)日：1981-10-13
申请号：US960169
申请日：1978-11-13
申请人： John H. Yonker , Ernest P. Fisher, Jr. , David Bills
发明人： John H. Yonker , Ernest P. Fisher, Jr. , David Bills
IPC分类号： E21B34/00 , E21B34/10 , E21B43/12 , F16K3/00
CPC分类号： E21B34/106 , E21B2034/002
摘要： A landing nipple, adaptable to be made up in a tubing string having a sliding sleeve disposed in its bore for selectively providing communication of balance and control pressure fluid to the nipple bore. When the sleeve is shifted to its first, upper position, balance fluid is conducted via the nipple to a tubing retrievable safety valve placed in the tubing string below the nipple. In the event the tubing retrievable safety valve is taken out of service, a secondary safety valve can be landed in the nipple, the sleeve shifted to its downward, second position, opening sleeve ports for conducting control and balance fluids to the landed, secondary safety valve. The nipple has a failed closed safety system provided by the novel arrangement of nipple entry ports for balance and control fluid, in that the control fluid entry port is in between two balance fluid ports and their seals, so that failure of the pressure seal exposed to tubing pressure causes tubing pressure to enter the balance pressure system closing the tubing retrievable or secondary safety valve, whichever is presently in service.
摘要翻译：一种着陆乳头，可适用于具有设置在其孔中的滑动套管的油管柱，用于选择性地提供平衡连通并将压力流体控制到乳头孔。当套筒移动到其第一上部位置时，平衡流体经由管接头传导到放置在乳头下方的管柱中的可回收的管道安全阀。如果管道可回收安全阀停止使用，则二次安全阀可以降落在奶嘴中，套筒向下移动到第二位置，打开套筒端口用于控制和平衡流体到降落的次级安全阀。乳头具有由用于平衡和控制流体的乳头进入端口的新颖布置提供的故障闭合安全系统，因为控制流体进入口位于两个平衡流体端口和它们的密封件之间，使得压力密封件的损坏暴露于管道压力导致管道压力进入平衡压力系统，关闭管道可回收或二次安全阀，以当前正在使用的那个为准。

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