Method of and apparatus for casting solid propellant rocket motors
    1.
    发明授权
    Method of and apparatus for casting solid propellant rocket motors 失效
    固体推进剂火箭发动机的铸造方法和装置

    公开(公告)号:US4836961A

    公开(公告)日:1989-06-06

    申请号:US288

    申请日:1987-01-02

    IPC分类号: C06B21/00 F02K9/24

    摘要: A method of and apparatus for casting uncured solid propellant in solid propellant rocket motors includes a casting bayonet having annular slits formed in the exit end thereof that improve the fluidity and self-leveling behavior of the uncured propellant. Both of these effects eliminate or reduce the trapping of air in the cast propellant, thus providing a better product.

    摘要翻译: 用于在固体推进剂火箭发动机中铸造未固化固体推进剂的方法和装置包括在其出口端形成有环形狭缝的铸造卡口,其改善未固化推进剂的流动性和自流平行为。 这两种效应都消除或减少了铸造推进剂中空气的捕获,从而提供了更好的产品。

    Drill steel drive unit
    2.
    发明授权
    Drill steel drive unit 失效
    钻钢驱动单元

    公开(公告)号:US4834594A

    公开(公告)日:1989-05-30

    申请号:US34048

    申请日:1987-04-06

    申请人: Richard E. Morgan

    发明人: Richard E. Morgan

    IPC分类号: E21B3/02 E21B17/03

    摘要: A chuck to be power driven for rotating drill bits in the mining and construction fields. The chuck is designed to drive one or more telescoped drill steels which carry a mining bit and is designed to drive drill steels with square drive ends, large hexagonal drive ends, small hexagonal drive ends and large and small hexagonal ends as well as roof bolt units without modification.

    摘要翻译: 用于在采矿和建筑领域旋转钻头的动力驱动的卡盘。 卡盘被设计成驱动一个或多个承载采矿钻头的可伸缩钻杆,并被设计成驱动具有方形驱动端,大六角形驱动端,小六角形驱动端以及大小六边形端的钻杆以及车顶螺栓单元 没有修改。

    Short range radio information system
    3.
    发明授权
    Short range radio information system 失效
    短距离无线电信息系统

    公开(公告)号:US5199108A

    公开(公告)日:1993-03-30

    申请号:US292494

    申请日:1988-12-30

    IPC分类号: H04B1/04 H04H20/61

    CPC分类号: H04H20/61 H04B1/0458

    摘要: A radio information system operating at low power transmits in the AM broadcast band. A message to be broadcast is digitized and stored in a random access memory. It is retrieved from the memory, converted to analog form, and used to modulate a carrier signal. The message is continuously repeated, allowing nearby persons with AM radio sets to receive the message. In order to extend the useful range of the information system, an impedance matching circuit with a high-Q inductor is located between the antenna and the output circuitry of the transmitter.

    摘要翻译: 以低功率运行的无线电信息系统在AM广播频带中发射。 要广播的消息被数字化并存储在随机存取存储器中。 它从存储器中检索,转换为模拟形式,并用于调制载波信号。 该消息不断重复,允许附近的AM无线电台接收消息。 为了扩展信息系统的有用范围,具有高Q电感的阻抗匹配电路位于天线和发射机的输出电路之间。

    Method of and apparatus for purging an annular bayonet
    4.
    发明授权
    Method of and apparatus for purging an annular bayonet 失效
    吹扫环形卡口的方法和设备

    公开(公告)号:US4915883A

    公开(公告)日:1990-04-10

    申请号:US81201

    申请日:1987-08-03

    申请人: Richard E. Morgan

    发明人: Richard E. Morgan

    IPC分类号: C06B21/00 F02K9/24

    CPC分类号: F02K9/24 C06B21/0058

    摘要: An annular bayonet vacuum cup allows a vacuum to be pulled on an annular bayonet and the bayonet to be filled with propellant that is devoid of air. The vacuum cup is transparent/translucent and allows the propellant to be seen as it leaves the exit end of the bayonet. This alerts an operator to cut off the vacuum pressure thereby to keep the excess of propellant flow to a minimum, which excess drops into the vacuum cup and is prevented from contaminating the vacuum line. The vacuum cup is disposable (an O-ring sealing ring being reusable) and eliminates propellant clean-up.

    摘要翻译: 环形卡口真空杯允许将真空拉到环形卡口上,并且卡口将被没有空气的推进剂填充。 真空杯是透明/半透明的,并允许在离开卡口的出口端时看到推进剂。 这提醒操作者切断真空压力,从而将推进剂的过量保持在最小程度,这样过多的液滴进入真空杯并被防止污染真空管线。 真空杯是一次性(O型圈密封圈可重复使用),并消除了推进剂清理。