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79 条记录 (耗时 0.015 秒)

    Derived clock circuit in a phase modulated digital data handling system
    1.
    发明授权
    Derived clock circuit in a phase modulated digital data handling system 失效
    相位调制数字处理系统中的衍生时钟电路

    公开(公告)号：US3636536A

    公开(公告)日：1972-01-18

    申请号：US3636536D

    申请日：1968-03-21

    申请人： LEACH CORP

    发明人： NORRIS KERMIT A

    IPC分类号： G11B20/14 ,  G11B5/06

    CPC分类号： G11B20/1419

    摘要： A method and apparatus for deriving a clock signal in a highdensity digital data system wherein digital data levels are obtained directly from a coded signal recovered from a magnetic medium without any initial reliance on a clock signal. Such digital levels are obtained from the recovered coded signal by employing a decoder which utilizes differential phase shift techniques including a one-bit delay circuit. After such digital data levels have been derived, they serve as logic commands to gate out pulses representative of particular transitions of the coded signal recovered from the magnetic medium. The coded signal is applied to transition detectors yielding sharp spiked outputs for both positive and negative going transitions in the coded signal. The digital data levels logically pass and inhibit selected ones of the spiked pulses so that a continuous clock signal synchronized substantially at the midbit interval of existing digital data levels is generated. Both the digital data levels initially obtained without reliance on a clock signal, and a data-synchronized clock are available to utilization circuitry such as a computer.

    Monitoring wheel of gear-like construction
    2.
    发明授权
    Monitoring wheel of gear-like construction 失效
    齿轮结构监测轮

    公开(公告)号：US3602750A

    公开(公告)日：1971-08-31

    申请号：US3602750D

    申请日：1969-08-01

    申请人： LEACH CORP

    发明人： BOYER GEORGE WESLEY

    IPC分类号： H02K1/24 ,  H02K19/24

    CPC分类号： H02K1/24 ,  H02K19/24

    摘要： A monitoring wheel is disclosed for monitoring the movement of a rotary device. The monitoring wheel utilizes a commercially available nonmagnetic precision gear having a mixture of metallic material and a bonding agent compacted within the space between the gear teeth. The mixture within the gear is then machined to approximately the pitch line to enable a plurality of evenly spaced pulse indicators to be formed about the periphery of the gear.

    Spring mounted arc deflector
    3.
    发明授权
    Spring mounted arc deflector 失效
    弹簧安装的防雷器

    公开(公告)号：US3578928A

    公开(公告)日：1971-05-18

    申请号：US3578928D

    申请日：1968-11-22

    申请人： LEACH CORP

    发明人： SCHUESSLER JOHN C ,  CAPOL ROMAN J

    IPC分类号： H01H9/34 ,  H01H33/04

    CPC分类号： H01H9/34

    摘要： An improved arc deflector having a backing plate, a plurality of spaced-apart walls, and a recessed partition, which members define compartments having an end wall and opposed sidewalls. A set of contacts of an electrical relay are enclosed within each compartment, the walls acting to prevent arcing from one set of contacts to another. A retaining spring seats on a shelf of the backing plate and biases the compartmented enclosure against the relay container to hold the arc deflector immobile during use.