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    Control circuit for adjusting and regulating the speed of a brushless direct current motor responsive to voltages induced in the armature windings
    11.
    发明授权
    Control circuit for adjusting and regulating the speed of a brushless direct current motor responsive to voltages induced in the armature windings 失效
    用于调整和调节无臂直流电机对于在绞痛绕组中引起的电压的速度的控制电路

    公开(公告)号：US3667019A

    公开(公告)日：1972-05-30

    申请号：US3667019D

    申请日：1970-10-12

    Applicant: GEN MOTORS CORP

    Inventor： ELLIOTT JAMES O ,  JACKSON GEORGE W

    IPC: H02K29/10 ,  H02P6/06 ,  H02K29/00

    CPC classification number: H02K29/10 ,  H02P6/06

    Abstract: A control circuit for adjusting and regulating the speed of a brushless direct current motor having three ''''wye'''' connected armature coils, a permanent magnet field and a rotatable shaft. Each motor armature coil is connected in series with the collector-emitter electrodes of a respective switching transistor across a source of direct current supply potential, the baseemitter electrodes of each switching transistor being connected across the source of direct current supply potential through a respective photosensitive electrical switching device and the collector-emitter electrodes of a control transistor. A selectively variable magnitude of a direct current control potential is applied across the base-emitter electrodes of the control transistor and the photosensitive electrical switching devices are sequentially illuminated as the shaft rotates to sequentially establish the switching transistor base-emitter drive circuits. A direct current regulating potential generated in the motor armature coils as they are ''''cut'''' by the flux produced by the permanent magnet field is of a magnitude proportional to the speed of the motor and is applied in a reverse polarity relationship to the control potential for regulating the speed of the motor.

    Abstract translation: 一种用于调节和调节具有三个“Y”“连接的电枢线圈，永久磁场和可旋转轴的无刷直流电动机的速度的控制电路。 每个电动机电枢线圈与相应的开关晶体管的集电极 - 发射极电极串联连接在直流电源电压源上，每个开关晶体管的基极 - 发射极电极通过相应的直流电源电极连接 感光电开关器件和控制晶体管的集电极 - 发射极电极。 直流电流控制电位的选择性变化量施加在控制晶体管的基极 - 发射极之间，并且随着轴旋转以顺序地建立开关晶体管基极 - 发射极驱动电路，光敏电气开关器件依次被照亮。 在由电动机电枢线圈产生的直流电流调节电位由永久磁场产生的磁通“切断”时，电动机电枢线圈产生的直流调节电位的大小与电动机的转速成正比，并且以与控制电位相反的极性关系 调节电机的速度。

    Automatic vehicle leveling system including electrically operated pump down compressor
    12.
    发明授权
    Automatic vehicle leveling system including electrically operated pump down compressor 失效
    自动车辆水平系统，包括电动泵压缩机

    公开(公告)号：US3558156A

    公开(公告)日：1971-01-26

    申请号：US3558156D

    申请日：1969-05-01

    Applicant: GEN MOTORS CORP

    Inventor： JACKSON GEORGE W

    IPC: B60G17/015 ,  B60G11/56

    CPC classification number: B60G17/0155 ,  B60G2500/2014

    Abstract: IN PREFERRED FORM, AN AUTOMATIC VEHILE LEVELING SYSTEM INCLUDING A FLUID SPRING BETWEEN THE CHASSIS AND THE AXLE ASSEMBLY THAT IS SELECTIVELY CONNECTED TO A PRECHARGED PRESSURE TANK THROUGH A CLOSED LOOP SUPPLY SYSTEM INCLUDING A HEIGHT CONTROLLER HAVING THREE POSITION VALVE MEANS. AN ELECTRICALLY OPERATED COMPRESOR WITHIN THE STORAGE TANK IN COOPERATION WITH THE MULTI-POSITION HEIGHT CONTROLER PRODUCES A RAPID PUMP DOWN OF THE FLUID SPRING WHEN STATIC LOAD IS REMOVED. CONCURRENTLY THE COMPRESSOR WILL PRECHARGE THE TANK FOR SUBSEQUENT LEVELING USE WHEN THE VEHICLE CHASSIS IS LOADED.

    Energy absorbing bumper system
    20.
    发明授权
    Energy absorbing bumper system 失效
    能量吸收式保险杠系统

    公开(公告)号：US3700273A

    公开(公告)日：1972-10-24

    申请号：US3700273D

    申请日：1970-11-19

    Applicant: GEN MOTORS CORP

    Inventor： JACKSON GEORGE W ,  LONG PAUL J JR ,  FANNIN WAYNE V

    IPC: B60R19/32 ,  B60R19/02 ,  F16F9/06

    CPC classification number: B60R19/32

    Abstract: An energy absorbing bumper system for automotive vehicles includes a pair of fluid-filled telescopic cylinder units at respective ends of the bumper mounting the same to the vehicle chassis. Variable volume fluid chambers within each unit have the fluid flow therebetween controlled by a floating orifice and metering rod and one of the chambers is bounded by a gas piston urged by a body of compressed gas to force the telescopic mounting unit to a definite extended or normal position wherein the cylinders of the unit are snugly interengaged to resist relative radial displacement in rough road conditions and the like.

    Abstract translation: 用于机动车辆的能量吸收保险杠系统包括在保险杠的相应端部处的一对流体填充的伸缩缸单元，其将其安装到车辆底盘。 每个单元内的可变体积流体腔室中的流体流动由浮动孔口和计量杆控制，并且其中一个腔室由被压缩气体主体推动的气体活塞限制，以迫使伸缩式安装单元达到确定的延伸或正常 位置，其中单元的气缸紧密地相互接合以抵抗在恶劣的道路状况等中的相对径向位移。

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