Tools for wireless network planning
    1.
    发明授权
    Tools for wireless network planning 有权
    无线网络规划工具

    公开(公告)号:US06336035B1

    公开(公告)日:2002-01-01

    申请号:US09195556

    申请日:1998-11-19

    IPC分类号: H04Q720

    CPC分类号: H04W16/18

    摘要: Software tools for simulating the planning and operation of one or more cellsites within a wireless network utilize a database of cellsite information such as GPS, topographical, street map, architectural, RF propagation, and end user data. The tools retrieve and manipulate this data through a graphical user interface executed by a computing device. Using the graphical user interface, a user may simulate product information, drive tests, radio frequency propagation data, and user location profiles within a cell.

    摘要翻译: 用于模拟无线网络内的一个或多个小区的规划和操作的软件工具利用诸如GPS,地形,街道地图,架构,RF传播和最终用户数据之类的小区信息的数据库。 这些工具通过由计算设备执行的图形用户界面来检索和操纵这些数据。 使用图形用户界面,用户可以模拟单元内的产品信息,驱动测试,射频传播数据和用户位置简档。

    Input/output device arrangements for terminals
    2.
    发明授权
    Input/output device arrangements for terminals 失效
    端子的输入/输出装置布置

    公开(公告)号:US4490604A

    公开(公告)日:1984-12-25

    申请号:US407778

    申请日:1982-08-13

    IPC分类号: G06F1/18 G06C7/02

    CPC分类号: G06F1/181

    摘要: In an arrangement of two keyboards or other lamellar input/output devices for a computer or telecommunications terminal, one keyboard is integral with a cabinet of the terminal and the other keyboard normally fits within a housing in an undersurface of the cabinet and is masked by the integral keyboard. To enable withdrawal of the keyboard housed within the housing for use, a rear part of the cabinet undersurface is configured to allow the cabinet to be tilted bodily backwards to allow access to the keyboard. This is then pulled from under the integral keyboard and the cabinet is returned to its stable position. The keyboard housed within the housing is returned to its stored position in a converse manner.

    摘要翻译: 在用于计算机或电信终端的两个键盘或其他层状输入/输出设备的布置中,一个键盘与终端的机柜是一体的,另一个键盘通常安装在机柜的下表面内的外壳内,并被屏蔽 整体键盘 为了使容纳在壳体内的键盘能够撤出以使用,机柜下表面的后部被配置为允许机柜向后倾斜以允许接近键盘。 然后从整体键盘下拉,并将机柜恢复到稳定的位置。 容纳在壳体内的键盘以相反的方式返回到其存储位置。

    Gate valve
    6.
    发明授权
    Gate valve 失效
    闸阀

    公开(公告)号:US3945606A

    公开(公告)日:1976-03-23

    申请号:US570579

    申请日:1975-04-23

    申请人: Paul D. McDonald

    发明人: Paul D. McDonald

    IPC分类号: F16K3/30 F16K27/04

    摘要: A gate valve particularly for controlling the flow of chemicals and corrosives includes a knife edge gate and means to assure parallelism between the gate and a stainless steel gate seat in the valve casing. A bonnet on the top of the casing has guides for the gate and allows full withdrawal of the gate from the flow line without the necessity for the gate passing through the gate stem packing. Leakage of the valve is substantially eliminated.

    摘要翻译: 特别是用于控制化学品和腐蚀剂流动的闸阀包括刀刃浇口和用于确保浇口与阀壳中的不锈钢浇口座之间的平行度的装置。 外壳顶部的发动机罩具有导向门,并允许闸门从流动管线完全取出,而不需要通过闸杆包装的闸门。 基本上消除了阀的泄漏。