| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 173217000 | Electric motor | 81 |
| 20110192623 | ANODE FOR LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, ELECTRIC TOOL, BATTERY CAR, AND ELECTRIC POWER STORAGE SYSTEM - A lithium ion secondary battery having superior cycle characteristic is provided. The lithium ion secondary battery includes a cathode, an anode and an electrolyte. The anode has an anode active material layer including a plurality of anode active material fibers containing silicon as an element provided on an anode current collector. | 08-11-2011 |
| 20110192622 | ANODE FOR LITHIUM ION SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - There is provided an anode for a lithium ion secondary battery capable of improving the cycle characteristics, a lithium ion secondary battery using the same, an electric power tool using the lithium ion secondary battery, an electrical vehicle using the lithium ion secondary battery, and an electric power storage system using the lithium ion secondary battery. The anode for a lithium ion secondary battery includes an anode active material layer in which a first layer and a second layer respectively containing silicon and a metal element as an anode active material are alternately layered on an anode current collector, and 1.02≦A/B≦50 is satisfied. A represents a silicon content ratio in the anode active material in the first layer, and B represents a silicon content ratio in the anode active material in the second layer. | 08-11-2011 |
| 20100108341 | Battery pack, charger and terminal block arrangements for cordless power tool system - A battery pack, charger, and terminal blocks for the pack, charger and a cordless power tool are provided. The pack includes battery cells disposed between end caps within a bottom housing of the pack, and a potting boat for housing pack electronics electrically connected to the cells between the end caps and disposed within a pack top housing. A pack terminal block is connected to the potting boat within the top housing. The charger and the power tool each include a terminal block for providing electrical connections between the charger/tool and the battery pack. The terminal block is configured to float side-to-side to provide displaceable movement of the terminal block within the charger housing or tool housing for aligning the battery pack terminal block therein. | 05-06-2010 |
| 20130081842 | NON-WELDING DEVICE POWERED BY A WELDING POWER SUPPLY - A non-welding device powered by a welding power supply is provided. One device, a power tool, includes a connector configured to be coupled to a trigger receptacle of a welding power supply and to receive power from the trigger receptacle. The power tool also includes control circuitry electrically coupled to the connector and configured to receive power from the welding power supply and to use the power to operate the power tool. | 04-04-2013 |
| 20130112452 | Whizer a rechargable rotating power tool and padded attachment with multi purpose covers - A portable, hand held, electric, re-chargeable, rotating power tool, with three different size affixable heads and assorted covers used to complete tasks. | 05-09-2013 |
| 20090301746 | POWER TOOL HAVING A TRANSMISSION VENT - A power tool, such as a hammer drill and/or a chiseling hammer, includes a lubricated transmission arranged in a sealed transmission box. The transmission box is in fluid connection with the atmosphere via a venting channel. A sealing element is arranged in the venting channel. The sealing element cooperates with the venting channel to create a meandering pathway for air to pass through the venting channel so that leakage of lubricant between the sealing element and the venting channel is at least substantially prevented. | 12-10-2009 |
| 20130112451 | HANDLE PORTION OF HAND-HELD ELECTRIC TOOL - Three battery cells can be arranged such that one battery cell is situated on the front side of a handle portion and that the remaining two battery cells are situated on the rear side thereof while being arranged laterally side by side. Also, a handle portion can be generally of a triangular cross-sectional configuration whose apex portion is situated on the front side of the handle portion and whose base portion is situated on the rear side thereof; and the handle portion is grasped by bringing fingertips into contact with the apex portion ( | 05-09-2013 |
| 20130068493 | Power Tool - The present invention provides a power tool that can be used at a position away from the external power source. The power tool includes a housing, a motor, an end tool, a battery pack, and an inverter. The motor is supported by the housing and driven by alternate-current power. The end tool is supported by the housing and rotatably driven by the motor. The battery pack outputs direct-current voltage. The inverter is disposed outside the housing and is configured to convert the direct-current voltage outputted from the battery pack into alternate-current voltage and supplies the motor with alternate-current power. | 03-21-2013 |
| 20130126201 | Transmission for Power Tool with Variable Speed Ratio - A power tool includes a housing, a motor contained in the housing, an output shaft extending proximate a front of the housing, an end effector coupled to the output shaft and configured to hold an accessory; and a transmission disposed in the housing between the motor and the output shaft. The transmission includes a variable ratio gear set configured to transmit power from the motor to the output shaft at a substantially variable speed ratio. The transmission may further include a constant ratio gear set configured to transmit power from the motor at a substantially constant speed ratio. The transmission may be automatically or manually shiftable between a first mode where it transmits power through the constant speed ratio gear set and a second mode where it transmits power through the variable speed ratio gear set. | 05-23-2013 |
| 20130126202 | Screw Tightening Tool - An screw tightening tool ( | 05-23-2013 |
| 20120234573 | POWER TOOL - A power tool includes a motor, a rotating speed adjusting switch, a regulating member, and a control unit. The regulating member regulates an upper limit position when the switch is displaced by manipulation by a user into an upper limit of any one of stages by the manipulation by the user. The control unit controls an amount of a current flowing to the motor by a duty ratio based on a manipulation amount of the switch, thereby increasing the rotating speed of the motor in accordance with an increase of the manipulation amount. A predetermined set number of duty ratios are set for each of the stages. A proportion of the predetermined set number of duty ratios to a manipulable amount of the switch is higher in a first stage having the lowest upper limit position than in the stages other than the first stage. | 09-20-2012 |
| 20110284257 | ELECTRIC TOOL - An electric tool main body of an electric tool includes a battery retaining portion, and a battery includes a fitting portion capable of fitting with the battery retaining portion; the battery is connected to the electric tool main body through a sliding motion in a predetermined direction with respect to the electric tool main body in the state that the battery retaining portion is fitted with the fitting portion; the electric tool main body includes a connection prohibition portion prohibiting connection of other battery than the dedicated battery even if the battery is compatible with the rated voltage of the electric tool main body. | 11-24-2011 |
| 20100170690 | STATOR WITH INSULATION FOR AN ELECTRIC MOTOR, INSULATION FOR A STATOR, AND ELECTRIC POWER TOOL - The invention is based on a stator having an insulation which is arranged around a coil winding package, wherein a stator packet is arranged on the insulation. It is proposed that the insulation means be embodied as a self-supporting sleeve. | 07-08-2010 |
| 20100263895 | ELECTRIC TOOL - The invention relates to a hand-guided electric tool having a motor and a pulse width modulator for generating a pulse width modulated signal for operating the motor. A unit is provided for reducing the EMC interferences emitted by the electric tool. | 10-21-2010 |
| 20110214895 | LITHIUM SECONDARY BATTERY, ELECTROLYTIC SOLUTION FOR LITHIUM SECONDARY BATTERY, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A lithium secondary battery capable of obtaining superior cycle characteristics, superior storage characteristics, and superior load characteristics is provided. The lithium secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains a nonaqueous solvent, a lithium ion, at least one of nitrogen-containing organic anion having a Lewis acidic ligand, and at least one of inorganic anion having fluorine and an element of Group 13 to Group 15 in the long period periodic table as an element. | 09-08-2011 |
| 20090277660 | ELECTRIC POWER TOOL WITH SWIVELLED CABLE CONNECTION - An electric power tool having a housing, a motor, a jack for receiving a connection plug of an electric cable, and a swivel unit mounted on the housing and carrying the jack, wherein the swivel unit includes a first head mounted on the housing for rotation about a first axis, and a second head mounted on the first head for rotation about a second axis. The first and second axes form an angle between them, and provide for freedom of rotation of the jack, thereby providing for positioning of the jack and routing of a connected cable in desired directions relative to the housing. | 11-12-2009 |
| 20120292070 | ELECTRIC TOOL AND COMMUNICATION PLUG FOR ELECTRIC TOOL - An electric tool including: a motor configured to drive a front end tool; a control device configure to control rotation of the motor; a storage part configured to store a method of driving the motor by the control device; and a communication terminal to which a communication line for reading or writing information of the storage part is configured to be connected. | 11-22-2012 |
| 20110180291 | MAKING ELECTRICAL CONTACT WITH A RECHARGEABLE BATTERY HAVING A PLURALITY OF RECHARGEABLE BATTERY CELLS - In a rechargeable battery ( | 07-28-2011 |
| 20100263896 | HAND-HELD POWER TOOL HAVING A TWO-PART HOUSING - The invention relates to a hand-held power tool having a two-part housing, both housing parts being held together, by means of a connecting part, in such a manner that the housing parts can move in relation to each other. | 10-21-2010 |
| 20080302552 | Portable electric power tool - A portable electric power tool powered by a battery pack, which includes: a motor that operates the tool; the housing that houses the motor; at least one elastic member that is supported by the housing; and a battery pack holder supported by the elastic member. The battery pack holder is provided with an engaging portion that is detachably engaged with the case of the battery pack and connecting terminals that are electrically connected to the output terminals of the battery pack installed by the engaging portion. Thus, vibration of the battery pack is prevented even when the electric power tool vibrates. | 12-11-2008 |
| 20080302551 | ELECTRIC TOOL - According to an aspect of the present invention, there is provided an electric tool including: a housing; a motor that is housed in the housing; a tip tool; a rotation transmission mechanism that transmits a rotation of the motor to the tip tool; an air inlet that is disposed on the housing to introduce a cooling air for cooling the motor from an outside of the housing; an air outlet that is disposed to discharge the cooling air; and a cover that is slidable along an inner wall or an outer wall of the housing and that is movable in a first position where the air inlet and the air outlet are opened and a second position where the air inlet and the air outlet are closed. | 12-11-2008 |
| 20110203826 | Power Tool Having Off-Lock Member - A power tool includes a motor, a housing that accommodates the motor, a switch that supplies power to the motor, a switch lever that is provided movable relative to the housing to selectively turn ON and OFF the switch, and an off-lock member that is provided movable relative to the switch lever. The off-lock member includes a first engaging part and a second engaging part that are engageable with the housing. | 08-25-2011 |
| 20120067608 | HANDHELD WORK APPARATUS HAVING AN ELECTRIC DRIVE MOTOR - A handheld work apparatus having an electric drive motor has a battery pack ( | 03-22-2012 |
| 20110139479 | HOOK FOR ELECTRIC POWER TOOLS AND ELECTRIC POWER TOOL EQUIPPED WITH THE HOOK - A hook for electric power tools is disclosed. The hook is used with an electric power tool comprising a handle and a battery pack detachably mounted to a lower end portion of the handle. The hook is designed to be attached to the electric power tool in the proximity of the lower end portion of the handle and includes a ring-shaped slip-off preventing portion having an opening into which, when the battery pack is not attached to the handle, the handle can be inserted into the opening of the slip-off preventing portion, and when the battery pack is attached to the handle, the slip-off preventing portion can be prevented from being pulled out from the handle by the battery pack attached to the handle. | 06-16-2011 |
| 20090145621 | POWER TOOL - A power tool having a cooling system, comprises: a motor housing | 06-11-2009 |
| 20090229846 | Screw Driving Device and Screw - To provide a screw fastening device that, when performing a screw tightening operation, can substantially reduce the running torque directly applied by external force to a screw driving device. | 09-17-2009 |
| 20090151969 | ELECTRIC SCREWDRIVER - An electric screwdriver is configured for fastening a screw in an apparatus. The driving part is configured for generating rotary motion. The driven part is configured for fastening the screw in the apparatus using the rotary motion. The transmission part nonlinearly connects the driving part and the driven part. The transmission part is capable of transmitting the rotary motion from the driving part to the transmission part. | 06-18-2009 |
| 20090242227 | Electric power tool - An electric power tool includes a tool body and a battery pack removably mounted to the tool body. The battery pack is used as a power source of the tool body. The electric power tool further includes a lock unit for keeping the battery pack mounted to the tool body and an interrupter switch for interrupting the operation of the tool body when the lock unit does not keep the battery pack mounted to the tool body. Accordingly, the electric power tool is not operable when the battery pack is not completely mounted to the tool body. | 10-01-2009 |
| 20090126963 | Hand-held power tool - A hand-held power tool includes an electric motor ( | 05-21-2009 |
| 20100163266 | Electric power tools - One aspect according to the present invention includes an electric power tool, in which a capacitor is positioned closer to a motor control circuit than a switch electrically connected to the motor control circuit. | 07-01-2010 |
| 20100186980 | Power-Driven Hand-Held Tool - A power-driven hand-held tool is disclosed. It comprises a housing, a drive motor arranged in the housing and having a motor shaft that defines a longitudinal axis, a workspindle comprising a tool holding fixture arranged outside the housing for holding a tool, wherein the workspindle defines a spindle axis arranged at an angle relative to the longitudinal axis , wherein at least one battery unit is provided for supplying the drive motor with energy, wherein the drive motor is coupled to the workspindle for driving same oscillatingly about the spindle axis, wherein a center of gravity of the battery unit is located on a side of the longitudinal axis opposite the tool holding fixture. | 07-29-2010 |
| 20100258327 | ELECTRICALLY DRIVEN HAND-HELD POWER TOOL - The invention relates to an electrically driven hand-held power tool having a drive motor that is configured as a commutator motor having a brush for current transfer to the commutator. A removable cover is received in the housing that is the carrier of a spring element, which exerts a spring force in the mounted state on the brush in the direction of the commutator. | 10-14-2010 |
| 20110232933 | ELECTRICAL POWER TOOL - In a speed change device of an electrical power tool, a reset arm is provided separately from a switch lever, which arm is operated by a reset motor. Due to tilting motion of the reset arm, a lock ring can be returned to an unlocking position in which a second stage internal gear can be rotated, so that the speed change device can be rest to a high speed low torque mode. | 09-29-2011 |
| 20100236807 | BATTERY PACK - An electrical combination including a driver drill capable of producing an average current draw of approximately 20-amps, a circular saw capable of producing an average current draw of approximately 20-amps, and a power tool battery pack operable to supply power to the driver drill and to the circular saw, the battery pack including a plurality of battery cells, the plurality of battery cells each having a lithium-based chemistry. | 09-23-2010 |
| 20100218967 | Electric Power Tool with Battery Pack - An electric power tool has a device housing with a rear grip extending in the longitudinal direction of the device housing. The device housing has first opposed housing sides and second opposed housing sides. An electric drive motor and its electronic control are arranged in the device housing. A battery pack compartment arranged in the device housing receives a battery pack that has a parallelepipedal shape and extends in a direction of a height axis, width axis and depth axis. The battery pack is arranged such that the width axis and the height axis extend transversely to the longitudinal axis of the device housing. The battery pack has narrow sides extending approximately parallel and at a minimal spacing relative to the first opposed housing sides, respectively. The battery pack has opposed end faces neighboring the second housing sides, respectively. | 09-02-2010 |
| 20100236806 | Oscillating Tool With Vibration Damping System - An oscillating tool comprises a housing that accommodates a motor which for driving a tool is coupled with a drive shaft via an oscillation drive, for driving it about its longitudinal axis rotatingly oscillatingly. For reducing vibrations, there is provided an inertial mass that is movably held on the housing via at least one spring element. | 09-23-2010 |
| 20100252295 | MID-HANDLE DRILL CONSTRUCTION AND ASSEMBLY PROCESS - A power tool can include a gear case, a motor having first and second sets of lead wires, a housing assembly, and a field case. The field case may include a front portion configured for engaging the gear case and a rear portion. The housing assembly may include first and second generally symmetrical housing segments configured for engaging the field case and forming a mid-handle grip. The first set of lead wires may be routed through the front portion of the field case directly to a trigger switch assembly. A method for assembling a mid-handle power tool is also provided and may include routing lead wires through a ventilation path between the field case and trigger assembly. | 10-07-2010 |
| 20110056717 | SELF-CONTAINED PORTABLE ELECTRICAL APPLIANCE WITH LOCK-ON ELECTRIC POWER PACK - A self-contained portable electrical appliance ( | 03-10-2011 |
| 20110056716 | ELECTRIC SAW COMMUNICATION - The present invention relates to an electric saw ( | 03-10-2011 |
| 20110232932 | Rechargeable Battery Apparatus for a Handheld Power Tool - A rechargeable battery apparatus for a handheld power tool has at least one load interface which is configured to make contact with a load in a detachable manner. The load interface has at least one identification means for electronically identifying the load. | 09-29-2011 |
| 20090114412 | POWER TOOL HAVING HOUSING WITH ENHANCED IMPACT RESISTANCE - A power tool includes a tool housing and a motor received in the tool housing. The tool housing includes an end portion surrounding at least a rear portion of the motor. At least a portion of the end portion of the tool housing has a double-wall structure and includes an interior wall and an exterior wall. The interior wall and the exterior wall are spaced from each other. In an aspect, a plurality of ribs extend from the interior wall to the exterior wall in a direction transverse to the interior wall and the exterior wall. In an aspect, a plurality of the plurality of the ribs are not tied to the exterior wall. | 05-07-2009 |
| 20090071675 | BATTERY PACK AND CORDLESS TOOL USING THE SAME - A battery device is constituting by connecting such cell assemblies in parallel as each comprises: a first cell group having a plurality of cells connected in series; a housing container for housing said first cell group; current detecting means housed in said container for detecting a current to flow through the first cell group; a switching element connected with said first cell group for turning ON/OFF the current to flow through said first cell group; and means for controlling the ON/OFF of said switching element in response to the output signal of said current detecting means. | 03-19-2009 |
| 20090107691 | Housings for power tools - A housing for a power tool includes a plurality of housing segments assembled together to form the housing. A gap is produced between mating surfaces of at least two housing segments positioned adjacent to each other. A capillary action preventing device disposed at the gap and constructed to interrupt a path of flow of a liquid caused by a capillary action from the inside to the outside of the housing along the gap. | 04-30-2009 |
| 20110011610 | HAND-HELD POWER TOOL - In a hand-held power tool with a device for presetting a selected rotation direction of a drive motor that is associated with the power tool and contained in a tool housing. The device is equipped with an actuating element accessible from outside the tool housing for mechanically actuating a switch element, which is situated inside the tool housing and is at least embodied for electrically switching between a first and second rotation direction of the drive motor, the switch element is situated in the vicinity of the actuating element. | 01-20-2011 |
| 20110005793 | BATTERY PACK AND MOTOR-DRIVEN TOOL USING THE SAME - A battery pack | 01-13-2011 |
| 20110042117 | ENERGY STORAGE MODULE AND POWER TOOL COMPRISING AT LEAST ONE ENERGY STORAGE MODULE - The invention is based on an energy storage module, in particular a battery pack for supplying power to a power tool. According to the invention, a plurality of cells are interconnected electrically for energy storage. It is proposed that the cells are electrochemical storage cells having a flexible cell casing that is dimensionally unstable. The invention further relates to a power tool having at least one such energy storage module. | 02-24-2011 |
| 20100163265 | ELECTRICAL POWER TOOL - In view of the above problem, the present invention is to provide an electrical power tool which enables a user to intuitively grasp a rotation direction and a rotation speed of a tip tool. The electrical power tool | 07-01-2010 |
| 20100065295 | CORDLESS POWER TOOL AND ACCOMODATION CASE - There are provided a cordless power tool powered by a power supply unit that does not require a charging device and a charging power supply unit and an accommodation case thereof. In a cordless power tool, a front-end tool | 03-18-2010 |
| 20110147031 | ELECTRIC MACHINE TOOL - In an electric machine tool having an interface ( | 06-23-2011 |
| 20110073342 | DEVICE FOR DRIVING INSTRUMENTS AND TOOLS AND THE USE THEREOF - The invention relates to a device for driving instruments and tools comprising a housing ( | 03-31-2011 |
| 20110162862 | ELECTRIC POWER TOOL - An electric power tool includes a tool portion, a fuel cell, a power drive source, and a water-holding unit. The water-holding unit holds a reaction water produced in the fuel cell by oxidation reaction between a fuel and an oxidizing agent. | 07-07-2011 |
| 20110000696 | POWER TOOL - A power tool includes a case; a motor installed within the case, the motor comprising a motor housing and a rotor with shaft; a gear train comprising a gear train housing and a speed reduction mechanism installed within the gear train housing and connected to the shaft of the motor. The motor housing and the gear train housing are integrally formed as a common housing and fixed relative to the case. | 01-06-2011 |
| 20110073343 | Electric power tool - An electric power tool includes a housing, a motor arranged within the housing, a power transmission unit arranged within the housing for transferring rotation of the motor to a work tool, a motor control unit arranged within the housing for controlling the rotation of the motor, and a trigger switch retractably provided to the housing for instructing the motor control unit to control the rotation of the motor. The electric power tool further includes a wireless communication device arranged within the housing for wirelessly communicating the work information on the content of works. The wireless communication device includes an antenna unit. The wireless communication device is covered with a shock-absorbing material. The antenna unit is arranged to lie higher than the trigger switch when the electric power tool is stored in a specified storage state. | 03-31-2011 |
| 20100282485 | POWER TOOL WITH INTEGRATED BIT RETENTION DEVICE - A power tool having a housing, an electric motor disposed in the housing, and a spindle drivingly attached to the electric motor. The spindle includes a cavity adapted for receiving a bit therein and a window extending through the spindle in communication with the cavity. The power tool further has a retention device including a bit engaging member disposed within the housing and operable to extend through the window and retain a bit within the cavity. The power tool still further has an actuator operable by a user externally of the housing to disengage the bit engaging member from a bit received in the cavity and, finally, a mechanical interconnection system operably coupled between the actuator and the retention device to actuate the retention device in response to the actuator, wherein the mechanical interconnection is disposed within the housing. | 11-11-2010 |
| 20110108302 | PORTABLE ABRASIVE TOOL - The portable abrasive tool comprises a flat motor composed of a rotor having a coil disk in the form of a disk on which multiple coil pieces are arranged in the circumferential direction about the output shaft when seen in the direction of the axis line of the output shaft and a stator having magnets arranged in the manner that the magnetic flux passes through the coil disk in the direction of the axis line of the output shaft, and an abrasive part connected to one end of the output shaft of the flat motor. | 05-12-2011 |
| 20110114350 | LITHIUM-BASED BATTERY PACK FOR A HAND HELD POWER TOOL - A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell. | 05-19-2011 |
| 20110168422 | ELECTRIC POWER TOOL - An electric power tool includes: a motor; a housing receiving the motor; a power transmission mechanism configured to transmit a driving force of the motor to rotate a top tool; a snap switch including a swing type lever configured to turn on or off rotation of the motor, the snap switch being received inside the housing; a switch lever configured to move in a direction substantially vertical to a surface of the housing; a push bar configured to move the swing type lever in conjunction with the movement of the switch lever; and an urging unit configured to urge the push bar in a direction in which the switch is turned off. | 07-14-2011 |
| 20100252294 | HANDLE PORTION OF HAND-HELD ELECTRIC TOOL - Three battery cells can be arranged such that one battery cell is situated on the front side of a handle portion and that the remaining two battery cells are situated on the rear side thereof while being arranged laterally side by side. Also, a handle portion can be generally of a triangular cross-sectional configuration whose apex portion is situated on the front side of the handle portion and whose base portion is situated on the rear side thereof; and the handle portion is grasped by bringing fingertips into contact with the apex portion ( | 10-07-2010 |
| 20110214896 | LITHIUM-BASED BATTERY PACK FOR A HAND HELD POWER TOOL - A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell. | 09-08-2011 |
| 20110297411 | LITHIUM-BASED BATTERY PACK FOR A HAND HELD POWER TOOL - A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell. | 12-08-2011 |
| 20110297409 | Hand-Held Power Tool - A hand-held power tool is disclosed. The power tool has a tool receptacle for holding a tool along an axis. A housing has a grip area for a first hand. The grip area has a support section for the thumb and index finger in a plane with the axis and a shaft section for gripping around on one side of the plane. A contact surface for a second hand, which is arranged facing away from the tool receptacle and on another side of the plane, is inclined between 80 degrees and 100 degrees to the plane. | 12-08-2011 |
| 20110297410 | ELECTRIC TOOL - In an electric disc grinder, there is provided, between a driven gear and a spindle in a torque transmission system, a C-shaped spring member capable of elastic deformation in a diameter enlarging direction. With respect to the rotating direction, the spring member is engaged with a driving protrusion of the driven gear and a driven protrusion of a joint sleeve of the spindle; when transmitting the rotation of the driven gear to the spindle, the spring member undergoes elastic deformation in the diameter enlarging direction depending on the driven side load, thereby mitigating the starting shock. An abutment surface of the driven protrusion is formed as an inclined surface causing an end portion of the spring member contacting with the abutment surface to slide radially outwards. As a result, the spring member can easily undergo elastic deformation in the diameter enlarging direction. | 12-08-2011 |
| 20120145428 | SECONDARY BATTERY, BATTERY PACK, ELECTRONIC APPARATUS, ELECTRIC TOOL, ELECTRIC VEHICLE, AND POWER STORAGE SYSTEM - A secondary battery including: spirally wound electrode body in which positive electrode and negative electrode are laminated via separator and spirally wound, wherein the positive electrode includes an inner circumference side positive electrode active material layer and an outer circumference side positive electrode active material layer while including a single side active material layer formation region, the ratio A/(A+B) of an area density A of the inner circumference side positive electrode active material layer and an area density B of the outer circumference side positive electrode active material layer, an inner diameter C of the coil opening portion, and the ratio D/E of a thickness D of the positive electrode and a thickness E of the positive electrode collector satisfy the relationship expressed in Formula 1, and a length F of the single side active material layer formation region satisfies the relationship expressed in Formula 2. | 06-14-2012 |
| 20110155407 | MODULARIZED ULTRASONIC VIBRATION MACHINING APPARATUS - A modularized ultrasonic vibration machining apparatus is provided, which includes a tool holder module. The tool holder module further includes: a housing, having a positioning pin disposed thereon; a tool holder linking part, disposed in the housing; a transmitting mechanism, disposed in the housing and linked to the tool holder linking part in a transmission manner; an expanding device, disposed in the housing and linked to the transmitting mechanism in a transmission manner; a piezoelectric element, disposed in the housing and linked to the expanding device; and an electrical connector, disposed in the housing and electrically connected to the piezoelectric element and the positioning pin. Therefore, the modularized tool holder has an internal vibration mechanism and closed circuit setting of power supply, is capable of being assembled and applied conveniently, and has good security, economical efficiency, and applicability in industry. | 06-30-2011 |
| 20120061117 | RECHARGEABLE ELECTRIC TOOL - The present invention provides a rechargeable electric tool in which a battery pack as a power supply slides in a battery holder formed in an end part of a housing. A bag-shaped waterproof cover covering the battery pack including a coupling part between the battery holder and the battery pack is formed by two divided covers which are separated to the front and rear sides in a slide attachment direction of the battery pack. Between the two divided covers, a coupling mechanism can be arbitrary operated in a coupling position or a coupling cancelling position. The coupling position is a position in which the divided covers are coupled to each other in an attached state where the coupling part and the battery pack are covered. The coupling cancelling position is a position in which coupling of the divided covers is cancelled. | 03-15-2012 |
| 20120043102 | ELECTRIC POWER TOOL - In an electric power tool in which a metal front housing that accommodates a driving mechanism is assembled to the front of a main housing that accommodates a motor, an output shaft is protruded from the distal end of the front housing, and the outer periphery of the front housing is protected by a cylindrical transparent cover made of synthetic resin, a decorative pattern is formed on the inner surface of the transparent cover. The decorative pattern is formed of bumps and dips formed on the inner surface. | 02-23-2012 |
| 20120152583 | CORDLESS ELECTRIC POWER TOOL - A cordless electric power tool comprises a motor that drives a tool, a battery that supply electric power to the motor and a motor drive circuit that is disposed between the motor and the battery. The motor is a three-phase brushless motor, and the battery has a nominal voltage of 18 volts. An overall electric efficiency of the cordless electric power tool becomes at least 70 percent when a value of current passing through the motor becomes at least 35 amperes but no more than 45 amperes and the cordless electric power tool outputs power of at least 450 watts but no more than 550 watts. | 06-21-2012 |
| 20090133894 | ELECTRIC IMPACT TIGHTENING TOOL - An electric impact tightening tool in which the rotation of an output section of an electric motor is transmitted to an impact generation section (P) and impact force generated in the impact generation section (P) causes a main shaft ( | 05-28-2009 |
| 20090126964 | Mid-handle drill construction and assembly process - A power tool can include a gear case, a motor having first and second sets of lead wires, a housing assembly, and a field case. The field case may include a front portion configured for engaging the gear case and a rear portion. The housing assembly may include first and second generally symmetrical housing segments configured for engaging the field case and forming a mid-handle grip. The first set of lead wires may be routed through the front portion of the field case directly to a trigger switch assembly. A method for assembling a mid-handle power tool is also provided and may include routing lead wires through a ventilation path between the field case and trigger assembly. | 05-21-2009 |
| 20120073849 | VARIABLE AMPLITUDE VIBRATORY APPLIANCE - A vibratory appliance includes a tool driven to oscillate by a rotary electric motor. A shaft supported, at an intermediate portion by a pivot, is driven by an orbital drive mechanism. The orbital drive mechanism includes a rotor rotated about a rotor axis by the motor, an elongate part, and a coupler. The elongate part and the coupler are each fixed to a respective one of the inner end and the rotor. The elongate part and the coupler are mutually connected for sliding movement relative to one another, between first and second relative positions in which the inner end orbits about the rotor axis at first and second orbital radii, respectively, to vary the amplitude of oscillation of the tool. | 03-29-2012 |
| 20120073848 | BATTERY PACK AND ELECTRIC POWER TOOL INCLUDING SAME - A battery pack includes cylindrical columnar battery cells arranged at least in two rows and two columns along vertical and horizontal directions orthogonal to center axes of the battery cells. Each of the battery cells includes an electrode terminal formed in one end portion thereof. The battery pack further includes a connector plate to which the electrode terminals of four vertically and horizontally adjoining battery cells are joined. The connector plate is arranged to parallel connect each pair of the battery cells adjoining in the same direction to form battery cell blocks. The connector plate is configured to serially connect the battery cell blocks. The center axes of the battery cells are positioned at vertexes of a parallelogram when the vertically and horizontally adjoining battery cells are seen at one end side thereof. The connector plate has a contour conforming to respective sides of the parallelogram. | 03-29-2012 |
| 20120073847 | RECHARGEABLE ELECTRIC TOOL - The present invention provides a rechargeable electric tool in which a battery pack detachably mounted to a mounting part, which is formed lower than an opening provided at a housing, wherein a seal member is held in the housing to seal between the opening and the battery pack mounted to the mounting part. A projection projecting toward the opening side is provided at the seal member, and a passing hole that penetrates the projection and the seal member and allows a lead line connecting an electric component accommodated on the opening side in the housing to the battery pack to pass therethrough is formed. | 03-29-2012 |
| 20120186844 | Power Tool, Particularly a Hand Power Tool, the Housing Parts Thereof Being Connected By Means of Form-Fitting Elements - A power tool, particularly a hand power tool, has a motor housing and a housing cover, in which a brush cover can be removably inserted. Corresponding form-fitting elements are arranged on the motor housing and on the housing cover, said elements being connected to each other in a form-fitting manner in the assembled position. The brush cover is held on the housing cover and/or on the motor housing in a form-fitting manner. | 07-26-2012 |
| 20110036610 | MACHINE TOOL HAVING AN ELECTRIC DRIVE MOTOR - A machine tool, in particular a powered hand tool, has an electric drive motor to which pole shoes are assigned in order to conduct a magnetic field. Furthermore, a fan wheel is provided in order to produce a stream of cooling air. In the housing, an air-guiding element forms a portion of the flow path for the stream of cooling air. According to the invention, the air-guiding element at least partially covers the pole shoes. | 02-17-2011 |
| 20110209888 | HAND-HELD OSCILLATORY POWER TOOL WITH TWO-AXIS TOOL MOUNTING - A hand-held power tool includes a motor mounted in a housing, with a two-axis universal joint mounted to the housing and supporting a rotary chuck. The universal joint includes a yoke mounted to the housing and a hub mounted to the yoke, the hub supporting the chuck. First and second clutches are provided for locking the yoke and the hub. A locking mechanism operatively connects the first and second clutches, and releases both of the first and second clutches simultaneously. A quick release chuck includes a spindle having a longitudinal bore for accepting a shank. A ball or like engaging device is disposed in a radial bore, extending into the longitudinal bore, and radially movable so that at least a portion of the ball extends radially into the longitudinal bore to engage a recess in the shank. A spring biased outer collar disposed about the spindle is movable longitudinally relative to the spindle and has a tapered face for forcing the ball into an aperture. A spring biases the collar into a locking position. | 09-01-2011 |
| 20110220381 | ELECTRICAL APPLIANCE, IN PARTICULAR HAND-HELD POWER TOOL - The invention relates to an electrical appliance, in particular a hand-held power tool, having an appliance housing, a circuitry substrate that is situated in the appliance housing and equipped with components, and sealing elements for preventing the influx of dirt into the region of the circuitry substrate. According to the invention, the sealing elements seal a subregion of the circuitry substrate off from other regions inside the appliance housing. | 09-15-2011 |
| 20110253406 | PORTABLE POWER TOOL BATTERY - A portable power tool battery has at least one fuse holder. The fuse holder is provided for detachably attaching a fuse situated in the fuse holder in a form-fitting and/or force-locking manner. | 10-20-2011 |
| 20100224384 | Portable handheld work apparatus - A portable handheld work apparatus has an internal combustion engine ( | 09-09-2010 |
| 20120085562 | PORTABLE POWER WRENCH WITH A GEAR CASING AND A PARAMETER SENSING DEVICE - A portable power wrench is controlled by an operation control unit and comprises a housing ( | 04-12-2012 |
| 20110308831 | BATTERY POWERED TOOL AND BATTERY PACK FOR A BATTERY POWERED TOOL - A battery pack for powering a battery powered tool may include a housing, a plurality of cells and an electrical connection assembly. The housing may include a sidewall assembly. The sidewall assembly may be configured to correspond to respective sidewalls of a battery compartment defined at a portion of the battery powered tool to facilitate insertion of the battery pack into the battery compartment. The plurality of cells may be disposed within the housing and arranged adjacent to each other such that the sidewall assembly, which extends along a direction substantially parallel to a direction of insertion of the battery pack into the battery compartment, forms an enclosure around the plurality of cells on all sides substantially parallel to the direction of insertion. The plurality of cells may be electrically connected to each other to provide a combined output. The electrical connection assembly may be disposed at a portion of the sidewall assembly to communicate the combined output to a connector disposed at a corresponding sidewall of the battery compartment. The electrical connection assembly may be arranged to engage the connector responsive to movement of the battery pack in a direction substantially parallel to the direction of insertion of the battery pack into the battery compartment. | 12-22-2011 |
| 20130008682 | BATTERY FOR A POWER TOOL - A power tool has a mechanism for ejecting a battery pack which includes a receiving frame which defines a cavity to receive a battery pack. A receiving member is adjacent the cavity. The receiving member meshes with a member on the battery pack to hold the battery pack in the cavity. A biasing member is in the cavity adjacent the receiving member. The biasing member ejects the battery pack from the ejecting mechanism. A member retains the biasing member in the cavity. The member guides a portion of the battery pack meshing with the receiving member into contact with the biasing member such that when the battery pack is locked onto the frame, the biasing member is in a compressed condition and when the battery pack is an unlocked position, the biasing member ejects the battery pack from the frame. | 01-10-2013 |
