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US20140028223 Power Tool Having Display That Displays Residual Capacity Of Battery  
A power tool includes a housing, an electric motor accommodated in the housing, a secondary battery that supplies electric power to the electric motor, a handle provided at the housing, a trigger...
US20150151447 ELECTRIC CUTTING SYSTEM  
An electric power saw/cutter (1) comprising: a. a rotatable saw structure (2) b. a rear handle (5) with a switch/speed control (6) c. a front handle (7) d. a drive unit (8) for rotating the saw...
US20110163701 Battery Pack for Cordless Power Tools  
A battery pack which includes a battery pack electronic control circuit adapted to control an attached power tool and/or an attached charger. The battery pack includes additional protection...
US20120274245 Power Tool and Battery Pack  
A power tool is connectable to a battery pack including a secondary battery. The power tool includes a motor and a prohibiting unit. The motor is driven with an electrical power supplied from the...
US20150022124 Self Sustainable Automobile  
A self-sustainable automobile is disclosed in the present invention. Said self-sustainable automobile uses chargeable batteries as its power source. The motor and chargeable batteries is matched...
US20130038251 MOTOR CONTROL DEVICE  
A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch...
US20150137715 Controlled Power Fade For Battery Powered Devices  
A method is provided for operating a power tool having a motor powered by a battery. The method includes: delivering power from the battery to the motor in accordance with an operator input;...
US20110248653 CONTROLLED POWER FADE FOR BATTERY POWERED DEVICES  
A method is provided for operating a power tool having a motor powered by a battery. The method includes: delivering power from the battery to the motor in accordance with an operator input;...
US20120274244 ELECTRIC OPERATING MACHINE  
An electric operating machine comprising a motor and a power circuit driving the motor by the electric power supplied from a battery. The power circuit comprises a voltage conversion part...
US20140015451 POWER TOOL SYSTEM AND POWER SUPPLY DEVICE  
A power tool system includes: a power tool including an AC motor; a portable battery pack; and a power supply device that converts a DC power supplied from the portable battery pack into an AC...
US20150222212 ELECTRIC POWER TOOL  
An electric power tool comprising a voltage conversion circuit configured to control magnitude of a voltage applied to a motor in accordance with magnitude of load.
US20140333237 SHREDDER LOAD OPTIMIZATION SYSTEM AND METHOD  
An electrical power load optimization system operable to regulate a power supply to one or more industrial machines so that a load imposed on the power supply by the one or more machines is...
US20110050134 Series electric engine power drive  
The motor generator set is described where in the output from the motor driven generator is fed back to the input of the electric motor in series with the power from the battery, which energizes...
US20110304287 CONTROL CIRCUIT AND METHOD FOR MANIPULATING A POWER TOOL  
The present application discloses a control circuit for a power tool and a method for manipulating the power tool. The control circuit has a detection circuit for battery packs, a calculating...
US20110163700 METHODS AND SYSTEMS RELATED TO DESULFATION OF A BATTERY  
Desulfation of a battery. At least some of the illustrative embodiments are methods of inducing ringing across terminals of a battery to reduce and/or reverse the build up sulfate crystals on the...
US20130221877 Systems and Methods for Black Starting a Power Grid Using a Self-Starting Synchronous Condenser  
Systems and methods for black starting a power grid are described. A battery-powered configuration including, but not limited to, a motor, drive, and batteries can be coupled to a condenser which...
US20120293096 Power Tool and Battery Pack for Use Therein  
To prevent or suppress a secondary battery used in a power tool from being deteriorated, a battery property, such as internal resistance of the battery, and a battery status of the secondary...
US20150229249 ELECTRONIC MOTOR-GENERATOR SYSTEM AND METHOD FOR CONTROLLING AN ELECTRIC MOTOR-GENERATOR  
A method can be used to control an electric motor-generator in order to avoid demagnetization of the permanent magnets in the electric motor-generator. The method includes the following steps: (a)...
US20140179535 ELECTRIC DRIVE DEVICE FOR AN AIRCRAFT  
The invention relates to a drive device for an aircraft (100), at least comprising a battery (101) for storing electrical energy, an electric motor (103) for driving a propeller (104), a...
US20150219707 DEVICE FOR DETECTING AND MEASURING AN INSULATION FAULT  
A device for detecting an insulation fault of a direct voltage source that can induce electrocution, including: first and second input terminals for the voltage source; first and third resistive...
US20150239363 CIRCUIT, ELECTRIC POWER TRAIN AND METHOD FOR CHARGING A BATTERY  
A circuit is provided, including a battery, an omnipolar switch, a switching element, a DC-intermediate circuit and a current supplying circuit. The omnipolar switch may be coupled to the battery...
US20140001986 Method for Operating an Electric Traction Drive System comprising a Battery Direct Inverter and Associated Control Apparatus  
The disclosure relates to a method for operating an electric traction drive system, which comprises an electric motor and a battery with a plurality of battery strings having battery modules. Each...
US20150026890 EMERGENCY POWER SUPPLY DEVICE FOR AN ELECTROMOTIVE FURNITURE DRIVE FOR A PIECE OF FURNITURE, ELECTROMOTIVE FURNITURE DRIVE, AND A CORRESPONDING PIECE OF FURNITURE  
The invention relates to an emergency power supply device (200) for an electromotive furniture drive (100) of a piece of furniture (1), comprising a housing in which at least one energy...
US20120074877 OVER-TEMPERATURE PROTECTION CIRCUIT FOR POWER DEVICES  
An over-temperature protection circuit for a direct current (DC) electric tool includes a current detecting circuit electrically coupled to a battery pack, a power device control circuit...
US20120169258 DISCHARGE STATE INDICATOR  
A circuit for displaying the state of a battery that is almost discharged features a battery, an inductive load, and a controllable switch connected in series. The circuit also includes a display...
US20140152200 PORTABLE SERVICE CONTROLLER FOR ELECTRO-MECHANICAL ACTUATORS  
A portable service controller for controlling an electro-mechanical actuator, the portable service controller includes a battery configured to power the portable service controller and a user...
US20150061549 BATTERY PACK, POWER TOOL AND BATTERY CHARGER  
A battery pack includes: a plus terminal and a minus terminal; a secondary battery; and a booster. The secondary battery has a rated voltage and is configured to output a battery voltage across...
US20150222206 MOTOR DRIVING CIRCUIT  
A main control circuit (11) for driving a motor is configured so as to have: a Pch FET (T11), which is provided in series with a diode (D1), and the source (S) of which is connected to a...
US20140217933 METHOD AND SYSTEM FOR CONTROLLING MOTOR  
A method for controlling a motor to enable drive assist of an engine with a high torque in a low rotation speed range as well as synchronized driving in a high rotation speed range. The method...
US20150244294 DC ELECTRIC FAN AND DRIVING SYSTEM THEREOF  
A DC electric fan receiving a first direct current voltage is provided. The DC electric fan includes a motor, a fan blade, a voltage converting device and a motor controller. The motor is directly...
US20140368131 MOTOR DRIVE DEVICE  
A motor drive device includes a bridge circuit 10 having a plurality of legs with switch elements 101 in upper and lower arms. High frequency AC voltage output from the bridge circuit 10, when it...
US20140021887 APPARATUS FOR REDUCING CURRENT DRAIN AND CURRENT SPIKE IMPACT ON BATTERY-POWERED ELECTRONIC DISPENSERS  
Apparatus and method for reducing current drain and current spike impact on a dispenser electric motor by employing a series of supercapacitors in a power supply current to provide at least a...
US20130113438 Power Tool  
A power tool including: a motor configured to be rotated by a lithium-ion secondary battery; an end tool configured to be driven by the rotation of the motor; and a switch configured to cause...
US20150251554 SWITCH CIRCUIT AND MOTOR ENERGY RECYCLING SYSTEM  
A switch circuit and a motor energy recycling system are disclosed herein. The switch circuit includes a power unit and a switch module. The power unit includes a first battery and a second...
US20150210183 Method and Device for Dynamically Adjusting an Operational Voltage for an Electric Motor  
Device and method for dynamically adjusting an operating voltage for an electric motor (9), which voltage is provided by a voltage source (1) formed in a modular manner, wherein modules (2-i) of...
US20130093367 METHOD AND DEVICE FOR ACTUATING AN ELECTRIC MACHINE IN THE MOTOR STARTING MODE  
The present invention relates to a method (30) for actuating an electric machine (14) in the motor starting mode by means of a power electronic system (10), in particular for application in a...
US20130342134 STARTER CIRCUIT FOR A MOTOR VEHICLE COMPRISING A DEVICE FOR STEPPING-UP THE BATTERY VOLTAGE, AND STARTER EQUIPPED WITH THE CIRCUIT  
The starter motor circuit (1) comprises a combination (10) of a starter motor and of a device (LPF) for stepping up the battery voltage. The device for stepping up the battery voltage is intended...
US20120229055 POWER CONVERTER AND POWER CONVERTER OF ROLLING STOCK  
A power converter includes a first electric power conversion unit having an inverter for converting a first DC electric power to an AC electric power, an AC circuit connected to the first electric...
US20140225433 MOBILE POWER SUPPLY DEVICE  
An electric vehicle that is serving as a mobile power supply device is provided with: a power-supplying coil that is covered by a weatherproof cover and that, together with an external...
US20130293164 FLUID APPARATUS  
There is provided a fluid apparatus that includes a fan configured to suction or discharge a gas; a motor configured to drive the fan; a battery configured to supply electric power to the motor; a...
US20130049650 ELECTRICAL ON-BOARD NETWORK AND METHOD FOR OPERATING AN ELECTRICAL ON-BOARD NETWORK  
An electrical on-board network of a vehicle, having at least two power circuits and an electrical machine allocated to a drive of the vehicle. The electrical machine has at least two phase...
US20140252996 HYBRID ELECTRIC DEVICE  
A device includes a housing configured with a working element and a motor configured for urging motion of the working element. The device further includes a power control module. The power control...
US20140265948 ELECTRIC POWER TOOL  
An electric power tool includes a power supply, a motor capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit capable of performing a voltage...
US20140049196 METHOD AND DEVICE FOR AN ELECTRIC MOTOR DRIVE  
Method and device for an electric-motor drive, particularly in connection with electric vehicles, in which a system consisting of rechargeable batteries produces operating current for the electric...
US20150230823 POWERED DRIVER ACTUATED BY FORCE ON DRIVESHAFT AND RELATED KITS, COMPONENTS, AND METHODS  
Powered drivers, and kits and methods including or using powered drivers, having a driveshaft extending from a distal end of the housing and configured to slide responsive to a force applied to a...
US20150155732 PRE-CHARGING SYSTEM FOR A CAPACITOR IN A VOLTAGE INVERTER FOR AN ELECTRIC MOTOR  
A pre-charging system for a capacitor in a voltage inverter for an electric motor is provided. The system includes a grounding contactor electrically coupled between a grounding terminal of a...
US20120013276 ELECTROMAGNETIC MOTOR  
An electromagnetic motor having a frame, and at least one disc rotatably mounted to the frame. At least one permanent magnet is mounted on the disc, and at least one electromagnet is mounted to...
US20140125258 METHOD AND APPARATUS FOR REDUCING TORQUE VARIATION IN MOTOR DRIVE SYSTEMS  
A method for controlling a specific electric machine includes receiving with a controller a back electromotive force (BEMF) coefficient for the specific electric machine. The controller is...
US20090211853 BATTERY POWERED MECHANIZED RAISE CLIMBING SYSTEM  
A battery powered raise climber system is provided that uses Lithium ion batteries to drive a single or double electric drive for an existing raise climber. The batteries offer a faster, safer,...
US20150015168 VEHICULAR DRIVING SYSTEM  
A vehicular driving system includes a rotating electric machine, an inverter and a controller. The rotating electric machine is constantly connected to an axle shaft. The inverter has an upper-arm...