知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

69 records (took 0.018 seconds)

    Control circuit for a power tool
    1.
    发明授权
    Control circuit for a power tool 失效

    公开(公告)号：US3926264A

    公开(公告)日：1975-12-16

    申请号：US41876273

    申请日：1973-11-23

    Applicant: THOR POWER TOOL CO

    Inventor： BARDWELL FRANCIS G ,  DUDEK EDMUND C

    IPC: B25B23/151 ,  B25B23/14 ,  B25B23/145 ,  G05D17/02

    CPC classification number: B25B23/1456 ,  G05D17/02

    Abstract: This disclosure deals with a control circuit for a tool including a motor for turning a rotatable power output shaft of the tool. A torque measuring device is coupled to the shaft and generates a signal which is a function of the torque output. The control circuit responds to the torque output and to a reference signal representing a preselected torque, and automatically turns off the motor when the torque output reaches the preselected torque. Further, the control circuit may cyclically turn the tool on and off at very short time intervals as the preselected torque value is being approached, in order to reduce the reaction torque felt by an operator of the tool. In addition, the lengths of the on times in successive cycles may be gradually decreased as the torque output level increases, with the result that the average reaction torque remains substantially constant even though the peak torque output increases.

    Sound attenuating device for a work steel or the like
    2.
    发明授权
    Sound attenuating device for a work steel or the like 失效
    用于工作钢或类似的声音衰减装置

    公开(公告)号：US3783970A

    公开(公告)日：1974-01-08

    申请号：US3783970D

    申请日：1972-06-07

    Applicant: THOR POWER TOOL CO

    Inventor： DANIELSON I

    IPC: B25D17/02 ,  B25D17/11 ,  E04B1/99

    CPC classification number: B25D17/02 ,  B25D17/11

    Abstract: A sound attenuating device for a work steel or other tool subject to impact blows during the operation thereof is disclosed, wherein a metal sleeve encircles a portion of the body of the steel and a quantity of elastomeric material is provided in the clearance between the sleeve and steel so as to fill such clearance and engage both the exterior of the steel and the interior of the sleeve.

    Abstract translation: 公开了一种用于工作钢或其他工具的声音衰减装置，其在操作期间受到冲击，其中金属套筒环绕钢体的一部分，并且一定数量的弹性体材料设置在套筒和 钢，以便填充这样的间隙并且接合钢的外部和套筒的内部。

    Impulse unit
    3.
    发明授权
    Impulse unit 失效
    IMPULSE单位

    公开(公告)号：US3717011A

    公开(公告)日：1973-02-20

    申请号：US3717011D

    申请日：1971-04-30

    Applicant: THOR POWER TOOL CO

    Inventor： VANA V

    IPC: B25B23/14 ,  F16D3/80

    CPC classification number: B25B23/1405

    Abstract: An impulse unit having a variable torque output and suitable for use in an impulse tool having a housing and a motor, is rotatably mounted in the tool housing and driven by the tool motor. The impulse unit comprises a casing assembly having an impulse cavity therein which is filled with a liquid and a spindle having blade means mounted rotatably with respect to the casing assembly. The blade means carried by the spindle divides the cavity into high and low pressure portions. A regulator valve is provided in the impulse unit to control the torque output of the unit and varies the size of an orifice or passage connecting the high and low pressure portions of the impulse cavity. The cavity, spindle and regulator valve may each be of simple cylindrical configuration.

    Abstract translation: 具有可变转矩输出并适用于具有壳体和电动机的脉冲工具的脉冲单元可旋转地安装在工具壳体中并由工具电动机驱动。 脉冲单元包括壳体组件，其中具有填充有液体的脉冲空腔和具有相对于壳体组件可旋转地安装的叶片装置的心轴。 由主轴承载的叶片装置将空腔分成高压部分和低压部分。 调节阀设置在脉冲单元中以控制单元的扭矩输出并且改变连接脉冲腔的高压部分和低压部分的孔或通道的尺寸。 空腔，主轴和调节阀可以各自具有简单的圆柱形构造。

Patent Agency Ranking