Stepping motor excitation sequences
    6.
    发明授权
    Stepping motor excitation sequences 失效
    步进电机励磁序列

    公开(公告)号:US4717866A

    公开(公告)日:1988-01-05

    申请号:US855608

    申请日:1986-04-23

    申请人: Roger M. Gray

    发明人: Roger M. Gray

    CPC分类号: G11B5/5508 H02P8/24 H02P8/34

    摘要: A method and apparatus for driving a stepping motor in its single stepping mode of operation by supplying a series of alternate forward and reverse phases whereby the motor is caused to rotate through a single step. The motor may be operated in its slewing mode by supplying a series of alternate phases for each step in a series of steps.

    摘要翻译: 一种用于通过提供一系列交替的正向和反相来驱动步进电动机的单步操作模式的方法和装置,由此电动机通过单一步骤旋转。 电动机可以通过在一系列步骤中为每个步骤提供一系列交替相位而以其回转模式操作。

    Helicopter discrimination apparatus for the murine radar
    7.
    发明授权
    Helicopter discrimination apparatus for the murine radar 失效
    直升机辨认装置

    公开(公告)号:US4038656A

    公开(公告)日:1977-07-26

    申请号:US456574

    申请日:1974-03-27

    IPC分类号: G01S7/292 G01S7/02

    CPC分类号: G01S7/2921

    摘要: A helicopter discrimination apparatus for a radar utilizing doppler filtering to discriminate between a missile and ground clutter. The short duration of the doppler filter pulses which are emitted by helicopter rotor blades are processed to prevent false alarms, thus allowing the radar-protected helicopter to operate in formation with other helicopters while maintaining protection against infra-red-seeking missiles.

    Debossment die holder
    9.
    发明授权
    Debossment die holder 失效
    压铸模座

    公开(公告)号:US5664894A

    公开(公告)日:1997-09-09

    申请号:US456580

    申请日:1995-05-31

    摘要: A hot debossing stamper for a report or book cover workpiece includes a print engine having a logo die forcer. In printing with a logo die, the logo die is mounted in a die holder and a loader-unloader tool articulates the holder and mounted die into the print engine under the logo die forcer. The die holder includes a die-supporting rectangular frame with a first locking projection extending from one end of the frame and a second locking projection extending from an opposite end. Upon insertion into the print engine, the first locking projection locks into a hook on the bottom end of the die forcer and the second locking projection seats on bail spring extending from an opposite end of the forcer bottom end.

    摘要翻译: 用于报告或书籍封面工件的热压凹版印模包括具有标志模具的印刷机。 在标志模具的印刷中,标志模具安装在模具座中,并且装载机卸载工具将保持器和安装的模具铰接到标志模具下方的打印引擎中。 模具座包括:模具支撑矩形框架,其具有从框架的一端延伸的第一锁定突起和从相对端延伸的第二锁定突起。 在插入打印引擎中时,第一锁定突起锁定在模具的底端上的钩中,并且第二锁定突起座位于从锻炼器底端的相对端延伸的吊环弹簧上。