Telephone set
    11.
    发明授权
    Telephone set 失效
    电话机

    公开(公告)号:US4837814A

    公开(公告)日:1989-06-06

    申请号:US100283

    申请日:1987-09-23

    IPC分类号: H04M1/02 H04M1/675

    CPC分类号: H04M1/02 H04M1/675

    摘要: In a telephone set which can be used by inserting a card, a slit-like card insertion port is formed at a portion behind a handset hung up on a hanger of a surface of a housing and a card reader is arranged behind the card insertion port. A projecting hanger assembly is formed on the housing. A hanger portion for receiving the handset is formed at an upper portion of the hanger assembly, and hollow projections are formed at a lower portion thereof. Slits of the card insertion port are formed in the distal end faces of the projections, and the card reader is partially housed in the projections.

    摘要翻译: 在通过插入卡可以使用的电话机中,在挂在机壳表面的挂钩上的手机后面的部分形成有狭缝状的卡片插入口,并且读卡器被布置在卡插入口后面 。 突出的衣架组件形成在壳体上。 在衣架组件的上部形成有用于接收听筒的衣架部分,在其下部形成有中空的突起。 卡插入口的狭缝形成在突起的远端面上,读卡器部分地容纳在突起中。

    Brushless DC motor
    14.
    发明授权
    Brushless DC motor 失效
    无刷直流电机

    公开(公告)号:US4888533A

    公开(公告)日:1989-12-19

    申请号:US144923

    申请日:1988-02-22

    IPC分类号: H02P6/08 H02P6/18 H02P6/20

    摘要: A brushless DC motor useful as a driving source of a refrigerant compressor of a refrigerating apparatus or a fan. A position detecting means generates a control signal by detecting the terminal voltage on input-output terminals current to three-phase rotor drive coils. Filters convert the detected terminal voltages to smoothed signals. A mixing means generates three kinds of mixed signal from the smoothed signal and comparing means generates the control signal for switching a current path to the three-phase coils by a signal made by comparing the mixed signal with the smoothed signal. The current path to the coils is switched by a switching-driving part in turn on the basis of the control signal of the position detecting means.The present invention provides a brushless DC motor wherein current flowing to the drive coils can be switched without special position detecting elements.