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128 条记录 (耗时 0.014 秒)

    OVERLOAD DETECTION IN A POWER TOOL
    98.
    发明申请
    OVERLOAD DETECTION IN A POWER TOOL 审中-公开

    公开(公告)号：US20170170774A1

    公开(公告)日：2017-06-15

    申请号：US15378757

    申请日：2016-12-14

    申请人： Milwaukee Electric Tool Corporation

    发明人： David H. Selfors ,  Brian Trump

    IPC分类号： H02P29/032 ,  H02P25/10 ,  H02P6/16 ,  B25F5/00 ,  B24B23/02

    CPC分类号： B24B23/028 ,  B23Q11/04 ,  B25F5/00 ,  H02H7/093 ,  H02P29/10

    摘要： A power tool includes a motor, a power circuit coupled to the motor, and a speed sensor coupled to the motor. The power circuit provides power to the motor. The speed sensor detects a position of the motor. The power tool also includes an electronic processor coupled to the motor and the speed sensor. The electronic processor is configured to receive an output signal from the speed sensor indicative of a measured speed of the motor at a first time, determine a cumulative value based on the measured speed of the motor, and interrupt power from the power circuit to the motor when the cumulative value exceeds an accumulator threshold.

    Braking device for a universal motor
    99.
    发明授权
    Braking device for a universal motor 有权
    通用电机制动装置

    公开(公告)号：US09590538B2

    公开(公告)日：2017-03-07

    申请号：US13518799

    申请日：2010-12-22

    申请人： Hans Hermann Rottmerhusen

    发明人： Hans Hermann Rottmerhusen

    IPC分类号： H02P3/12 ,  H02P3/00 ,  H02P3/22 ,  H02P25/10 ,  H02P25/14

    CPC分类号： H02P3/22 ,  H02P25/10 ,  H02P25/14

    摘要： An electrodynamic braking device for a universal motor includes a field winding configured to be fed from a grid during a braking operation, and an armature that is configured to be directly short-circuited. A braking process is performed by means of control electronics. Good braking is achieved with relatively low brush wear. Such an electrodynamic braking device can be used effectively for a power tool.

    摘要翻译： 一种用于通用电动机的电动制动装置包括：在制动操作期间被配置为从电网供电的励磁绕组和被配置为直接短路的电枢。 制动过程通过控制电子元件进行。 用较低的刷子磨损实现良好的制动。 这种电动力制动装置可以有效地用于电动工具。

    Electromechanical power system
    100.
    发明申请
    Electromechanical power system 审中-公开

    公开(公告)号：US20160036365A1

    公开(公告)日：2016-02-04

    申请号：US13957966

    申请日：2014-08-04

    申请人： James Bryant

    发明人： James Bryant

    IPC分类号： H02P25/10 ,  B60L11/18

    CPC分类号： B60L50/51 ,  B60L1/003 ,  B60L3/0061 ,  B60L15/20 ,  B60L50/30 ,  B60L50/62 ,  B60L2210/40 ,  B60L2240/12 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/443 ,  Y02T10/6217 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7027 ,  Y02T10/7033 ,  Y02T10/7241 ,  Y02T10/7275

    摘要： The (6) power transformer that transmits power that links to (7) electromagnetic wound with a coil in a magnetic field as an amplifier of electrical amperes in a circuit, which an electromagnetic induction that generates overall power of the magnetomotive force as an alternating current (AC) induction motor. The (10) electromagnetic rotor bar as the magnetic rotating force that connects (9) the slip ring which supplies the magnetic current in an air gap (that interacts with electromagnetic induction) to the rotor bar that connects to (14) the fly wheel, a lever that generates torque. In accord with various petrol engine specifications the electromechanical power system can power passenger vehicles, trucks, buses, tractors, cranes, motorcycles, boats, locomotives, ships and other mechanical systems such as hydraulic engines, which include backhoes, excavators, and bulldozers; also it is the driving force of the rotors of pumping systems and electrical generating systems. It is also the driving force electrical generating system rotors for the alternator to produce electric-thermal power to generate steam or very hot air to drive turbine alternators in power plants, desalination plants, or large ships. In this electric power system using direct current (DC), (19) the battery is a source of power which links to electromagnetic coil in a series circuit that connects to resistors that link to the capacitor and connects to the power transformer that links to the (AC) reluctance motors that is the driving the force for the rotor that combines with a fan which is a movable compressor that generates air flow through a duct tube to the thruster for propulsion systems or propellers, which can be found in aircraft engines.This system also converts petrol-powered emergency power generator systems for home and businesses to direct current (DC) electric power systems such as the Generac II Emergency Power System Generator through the same process as for the portable electric generator in accordance to the specifications. In this electromechanical power system, the AC and DC can be alternatives to all energy sources.