US20110081847A1 - Motor parallel transmission portable angle grinder - Google Patents

Motor parallel transmission portable angle grinder Download PDF

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Publication number
US20110081847A1
US20110081847A1 US12/573,215 US57321509A US2011081847A1 US 20110081847 A1 US20110081847 A1 US 20110081847A1 US 57321509 A US57321509 A US 57321509A US 2011081847 A1 US2011081847 A1 US 2011081847A1
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Prior art keywords
motor
grinding wheel
spindle
rotating part
parallel transmission
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Abandoned
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US12/573,215
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Tai-Her Yang
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to US12/573,215 priority Critical patent/US20110081847A1/en
Priority to TW099219203U priority patent/TWM407810U/en
Priority to TW099133846A priority patent/TW201117916A/en
Priority to CN2010205560581U priority patent/CN201848754U/en
Priority to CN2010102997986A priority patent/CN102029564A/en
Publication of US20110081847A1 publication Critical patent/US20110081847A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power

Definitions

  • the present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel.
  • the parallel transmission device prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward.
  • a power storing and discharging device is also installed in the handle for use as a power source.
  • Traditional motor-drive right-angle type portable grinder is an electrical tool designed according to ergonomics. Its structural features are the following:
  • the angular difference between the handle axis extending from the housing and the grinding wheel axis is between 30° and 150°;
  • the electric motor is installed in the handle;
  • An angle type transmission device such as a bevel gear set is present in between the grinding wheel spindle and the motor spindle installed in the handle;
  • the present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel.
  • the parallel transmission device prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward.
  • a power storing and discharging device is also installed in the handle for use as a power source.
  • FIG. 1 is a structural drawing showing the main components of the motor parallel transmission portable angle grinder of the present invention.
  • FIG. 2 is a structural drawing showing an embodiment, wherein the motor and the housing separates with each other, according to the present invention.
  • the present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel.
  • the parallel transmission device By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward.
  • FIG. 1 is a structural drawing showing the main components of the motor parallel transmission portable angle grinder.
  • the structural pattern of the outer rotation type motor parallel transmission portable angle grinder as shown in FIG. 1 is formed by the rotating part of the drive motor driving the grinding wheel spindle through the parallel transmission device ( 320 ).
  • the main components include:
  • the motor parallel transmission portable angle grinder can also be a composite structure, in which the electric motor ( 100 ) and the housing ( 400 ) separate with each other.
  • FIG. 2 is a structural drawing showing an embodiment, wherein the motor and the housing separate with each other, according to the present invention.
  • FIG. 2 shows an embodiment of a composite structure, wherein the motor and the housing separate with each other, according to the present invention.
  • the main components include:

Abstract

The present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel. By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward.

Description

    BACKGROUND OF THE INVENTION
  • (a) Field of the Invention
  • The present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel. By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward. Aside from a manually controlled electromechanical device, a power storing and discharging device is also installed in the handle for use as a power source.
  • (b) Description of the Prior Art
  • Traditional motor-drive right-angle type portable grinder is an electrical tool designed according to ergonomics. Its structural features are the following:
  • 1. The angular difference between the handle axis extending from the housing and the grinding wheel axis is between 30° and 150°;
  • 2. The electric motor is installed in the handle; and
  • 3. An angle type transmission device such as a bevel gear set is present in between the grinding wheel spindle and the motor spindle installed in the handle;
  • Because the above structure necessitates an angle type transmission device, the resulting very loud noise is the deficiency.
    • SUMMARY OF THE INVENTION
  • The present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel. By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward. Aside from a manually controlled electromechanical device, a power storing and discharging device is also installed in the handle for use as a power source.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a structural drawing showing the main components of the motor parallel transmission portable angle grinder of the present invention; and
  • FIG. 2 is a structural drawing showing an embodiment, wherein the motor and the housing separates with each other, according to the present invention.
    •  DESCRIPTION OF MAIN COMPONENT SYMBOLS
    • (100): Electric motor
    • (200): Motor rotating part
    • (205): Motor static part
    • (210): Power storing and discharging device
    • (211): Motor control circuit device
    • (212): Manually operated electromechanical device
    • (215): Power cord
    • (216): Charging control circuit device
    • (300): Motor spindle
    • (310): Inertial body
    • (320): Parallel transmission device
    • (330): Grinding wheel spindle
    • (400): Housing
    • (410): Guard
    • (500): Handle
    • (800): Grinding wheel
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel. By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward. Aside from a manually controlled electromechanical device, a power storing and discharging device is also installed in the handle for use as a power source. FIG. 1 is a structural drawing showing the main components of the motor parallel transmission portable angle grinder. The structural pattern of the outer rotation type motor parallel transmission portable angle grinder as shown in FIG. 1 is formed by the rotating part of the drive motor driving the grinding wheel spindle through the parallel transmission device (320). The main components include:
      • Electric motor (100): consisted of alternating or direct current, brush or brushless, synchronous or asynchronous, internal or outer rotation type electric motor, including a motor static part (205) and an motor rotating part (200), which are cylindrical, conical or disc type, wherein the motor static part (205) of the electric motor (100) is installed within a housing (400), the deflection angle between the axis of a spindle (300) of the motor rotating part (200) of the electric motor (100), which is parallel with the axis of a grinding wheel spindle (330), and the axis of a handle (500) is between 30° and 150°, and/or a inertial body (310) is installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to drive the grinding wheel spindle (330) through parallel transmission device (320) to facilitate the operations of grinding, polishing or cutting workpieces by a grinding wheel (800) or a circular saw, and the grinding wheel (800) or the circular saw is installed on the grinding wheel spindle (330);
      • Housing (400): related to a hermetic structure formed by solid state material for the installation of the electric motor (100) and the handle (500) formed by an extended body or assembly, wherein the motor static part (205) of the electric motor (100) is installed within the housing (400); and the deflection angle between the axis of the spindle (300) of the rotating part (200) of the drive motor (100), which is parallel with the axis of the grinding wheel spindle (330), and the axis of the handle (500) is between 30° and 150°;
      • Parallel transmission device (320): consisted of at least one set of the followings including parallel transmission gear set, and/or sprocket and chain set, and/or friction wheel set, and/or pulley and belt set, and/or toothed pulley and toothed belt set for transmitting the rotary kinetic energy of the rotating part (200) of the drive motor (100) to the grinding wheel spindle (330), wherein the spindle (300) of the rotating part (200) of the drive motor (100) is parallel with the grinding wheel spindle (330);
      • Handle (500): related to a hollow body for the installation of one or more of the following circuit devices including power cord (215), manually operated electromechanical device (212), and optional devices like power storing and discharging device (210), and/or charging control circuit device (216), and/or motor control circuit device (211), and/or an indicator lamp, and/or power display device for the operational control of the motor parallel transmission portable angle grinder;
      • Manually operated electromechanical device (212): related to an interface that directly or by way of the control circuit (211) provides the operator with the control over the direct motor-drive portable angle grinder, and is formed by electromechanical or solid state electronic structure for turning the motor on or off, and/or changing the rotational speed and/or varying the speed;
      • Power storing and discharging device (210): consisted of rechargeable and dischargeable batteries or ultracapacitors, and is configured as need;
      • Motor control circuit device (211): related to a circuit device formed by electromechanical and/or solid state electronic circuit device and configured as need for the execution of turning the motor on and off, and/or changing the rotational speed and/or varying the speed, and/or for the control and protection of voltage and current;
      • Charging control circuit device (216): related to a circuit device formed by electromechanical and/or solid state electronic circuit device and configured as need for controlling the external power supply over charging power supply, current and power-down timing for the power storing and discharging device (210);
      • Grinding wheel (800): installed on the spindle (300) of the motor rotating part (200) to provide rotary drive operation for grinding, polishing and cutting workpieces; and
      • Guard (410): installed on one side of the grinding wheel (800) and the rotating part (200) adjacent to the handle.
  • The characterized in that is the motor established to be open or semi-hermetic for the space from the interior to the housing and/or the handle of the motor to improve the effect of heat dissipation outward, and/or the inertial body (310) installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to facilitate the grinding, polishing or cutting operations of the grinding wheel (800) or a circular saw.
  • The motor parallel transmission portable angle grinder can also be a composite structure, in which the electric motor (100) and the housing (400) separate with each other.
  • FIG. 2 is a structural drawing showing an embodiment, wherein the motor and the housing separate with each other, according to the present invention.
  • FIG. 2 shows an embodiment of a composite structure, wherein the motor and the housing separate with each other, according to the present invention. The main components include:
      • Electric motor (100): consisted of alternating or direct current, brush or brushless, synchronous or asynchronous, internal or outer rotation type electric motor, including a motor static part (205) and an motor rotating part (200), which are cylindrical, conical or disc type, wherein the electric motor (100) is installed within a housing (400), the deflection angle between the axis of a spindle (300) of the motor rotating part (200) of the electric motor (100), which is parallel with the axis of a grinding wheel spindle (330), and the axis of a handle (500) is between 30° and 150°, and/or a inertial body (310) is installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to drive the grinding wheel spindle (330) through parallel transmission device (320) to facilitate the operations of grinding, polishing or cutting workpieces by a grinding wheel (800) or a circular saw, and the grinding wheel (800) or the circular saw is installed on the grinding wheel spindle (330);
      • Housing (400): related to a hermetic structure formed by solid state material for the installation of the electric motor (100) which is hermetic, semi-hermetic or open type and the handle (500) formed by an extended body or assembly, wherein the electric motor (100) is installed within the housing (400); and the deflection angle between the axis of the spindle (300) of the rotating part (200) of the drive motor (100), which is parallel with the axis of the grinding wheel spindle (330), and the axis of the handle (500) is between 30° and 150°;
      • Parallel transmission device (320): consisted of at least one set of the followings including parallel transmission gear set, and/or sprocket and chain set, and/or friction wheel set, and/or pulley and belt set, and/or toothed pulley and toothed belt set for transmitting the rotary kinetic energy of the rotating part (200) of the drive motor (100) to the grinding wheel spindle (330), wherein the spindle (300) of the rotating part (200) of the drive motor (100) is parallel with the grinding wheel spindle (330);
      • Handle (500): related to a hollow body for the installation of one or more of the following circuit devices including power cord (215), manually operated electromechanical device (212), and optional devices like power storing and discharging device (210), and/or charging control circuit device (216), and/or motor control circuit device (211), and/or an indicator lamp, and/or power display device for the operational control of the motor parallel transmission portable angle grinder;
      • Manually operated electromechanical device (212): related to an interface that directly or by way of the control circuit (211) provides the operator with the control over the direct motor-drive portable angle grinder, and is formed by electromechanical or solid state electronic structure for turning the motor on or off, and/or changing the rotational speed and/or varying the speed;
      • Power storing and discharging device (210): consisted of rechargeable and dischargeable batteries or ultracapacitors, and is configured as need;
      • Motor control circuit device (211): related to a circuit device formed by electromechanical and/or solid state electronic circuit device and configured as need for the execution of turning the motor on and off, and/or changing the rotational speed and/or varying the speed, and/or for the control and protection of voltage and current;
      • Charging control circuit device (216): related to a circuit device formed by electromechanical and/or solid state electronic circuit device and configured as need for controlling the external power supply over charging power supply, current and power-down timing for the power storing and discharging device (210);
      • Grinding wheel (800): installed on the spindle (300) of the motor rotating part (200) to provide rotary drive operation for grinding, polishing and cutting workpieces; and
      • Guard (410): installed on one side of the grinding wheel (800) and the rotating part (200) adjacent to the handle.
  • The characterized in that is the motor established to be open or semi-hermetic for the space from the interior to the housing and/or the handle of the motor to improve the effect of heat dissipation outward through the housing (400), and for the inertial body (310) installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to facilitate the grinding, polishing or cutting operations of the grinding wheel (800) or a circular saw.

Claims (5)

1. A motor parallel transmission portable angle grinder, in which a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle forms a parallel transmission device driving the grinding wheel; by means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward; the main components of the grinder including:
Electric motor (100): consisted of alternating or direct current, brush or brushless, synchronous or asynchronous, internal or outer rotation type electric motor, including a motor static part (205) and an motor rotating part (200), which are cylindrical, conical or disc type, wherein the motor static part (205) of the electric motor (100) is installed within a housing (400), the deflection angle between the axis of a spindle (300) of the motor rotating part (200) of the electric motor (100), which is parallel with the axis of a grinding wheel spindle (330), and the axis of a handle (500) is between 30° and 150°, and/or a inertial body (310) is installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to drive the grinding wheel spindle (330) through parallel transmission device (320) to facilitate the operations of grinding, polishing or cutting workpieces by a grinding wheel (800) or a circular saw, and the grinding wheel (800) or the circular saw is installed on the grinding wheel spindle (330);
Housing (400): related to a hermetic structure formed by solid state material for the installation of the electric motor (100) and the handle (500) formed by an extended body or assembly, wherein the motor static part (205) of the electric motor (100) is installed within the housing (400); and the deflection angle between the axis of the spindle (300) of the rotating part (200) of the drive motor (100), which is parallel with the axis of the grinding wheel spindle (330), and the axis of the handle (500) is between 30° and 150°;
Parallel transmission device (320): consisted of at least one set of the followings including parallel transmission gear set, and/or sprocket and chain set, and/or friction wheel set, and/or pulley and belt set, and/or toothed pulley and toothed belt set for transmitting the rotary kinetic energy of the rotating part (200) of the drive motor (100) to the grinding wheel spindle (330), wherein the spindle (300) of the rotating part (200) of the drive motor (100) is parallel with the grinding wheel spindle (330);
Handle (500): related to a hollow body for the installation of one or more of the following circuit devices including power cord (215), and manually operated electromechanical device (212) for the operational control of the motor parallel transmission portable angle grinder;
Manually operated electromechanical device (212): related to an interface that directly or by way of the control circuit (211) provides the operator with the control over the direct motor-drive portable angle grinder, and is formed by electromechanical or solid state electronic structure for turning the motor on or off, and/or changing the rotational speed and/or varying the speed;
Grinding wheel (800): installed on the spindle (300) of the motor rotating part (200) to provide rotary drive operation for grinding, polishing and cutting workpieces; and
Guard (410): installed on one side of the grinding wheel (800) and the rotating part (200) adjacent to the handle; and
the characterized in that is the motor established to be open or semi-hermetic for the space from the interior to the housing and/or the handle of the motor to improve the effect of heat dissipation outward, and/or the inertial body (310) installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to facilitate the grinding, polishing or cutting operations of the grinding wheel (800) or a circular saw.
2. The motor parallel transmission portable angle grinder as claimed in claim 1, wherein the electric motor (100) and the housing (400) can also be a composite structure for separating with each other; the main components of the grinder including:
Electric motor (100): consisted of alternating or direct current, brush or brushless, synchronous or asynchronous, internal or outer rotation type electric motor, including a motor static part (205) and an motor rotating part (200), which are cylindrical, conical or disc type, wherein the electric motor (100) is installed within a housing (400), the deflection angle between the axis of a spindle (300) of the motor rotating part (200) of the electric motor (100), which is parallel with the axis of a grinding wheel spindle (330), and the axis of a handle (500) is between 30° and 150°, and/or a inertial body (310) is installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to drive the grinding wheel spindle (330) through parallel transmission device (320) to facilitate the operations of grinding, polishing or cutting workpieces by a grinding wheel (800) or a circular saw, and the grinding wheel (800) or the circular saw is installed on the grinding wheel spindle (330);
Housing (400): related to a hermetic structure formed by solid state material for the installation of the electric motor (100) which is hermetic, semi-hermetic or open type and the handle (500) formed by an extended body or assembly, wherein the electric motor (100) is installed within the housing (400); and the deflection angle between the axis of the spindle (300) of the rotating part (200) of the drive motor (100), which is parallel with the axis of the grinding wheel spindle (330), and the axis of the handle (500) is between 30° and 150°;
Parallel transmission device (320): consisted of at least one set of the followings including parallel transmission gear set, and/or sprocket and chain set, and/or friction wheel set, and/or pulley and belt set, and/or toothed pulley and toothed belt set for transmitting the rotary kinetic energy of the rotating part (200) of the drive motor (100) to the grinding wheel spindle (330), wherein the spindle (300) of the rotating part (200) of the drive motor (100) is parallel with the grinding wheel spindle (330);
Handle (500): related to a hollow body for the installation of one or more of the following circuit devices including power cord (215), and manually operated electromechanical device (212) for the operational control of the motor parallel transmission portable angle grinder;
Manually operated electromechanical device (212): related to an interface that directly or by way of the control circuit (211) provides the operator with the control over the direct motor-drive portable angle grinder, and is formed by electromechanical or solid state electronic structure for turning the motor on or off, and/or changing the rotational speed and/or varying the speed;
Grinding wheel (800): installed on the spindle (300) of the motor rotating part (200) to provide rotary drive operation for grinding, polishing and cutting workpieces; and
Guard (410): installed on one side of the grinding wheel (800) and the rotating part (200) adjacent to the handle; and
the characterized in that is the motor established to be open or semi-hermetic for the space from the interior to the housing and/or the handle of the motor to improve the effect of heat dissipation outward through the housing (400), and/or the inertial body (310) installed on the motor rotating part (200) and/or the motor spindle (300) to make high speed and high inertial rotary drive to facilitate the grinding, polishing or cutting operations of the grinding wheel (800) or a circular saw.
3. The motor parallel transmission portable angle grinder as claimed in claim 1 or 2, further including installing the motor control circuit device (211) which is formed by electromechanical and/or solid state electronic circuit device for the execution of turning the motor on and off, and/or changing the rotational speed and/or varying the speed, and/or for the control and protection of voltage and current.
4. The motor parallel transmission portable angle grinder as claimed in claim 1 or 2, further including installing the power storing and discharging device (210) which consists of rechargeable and dischargeable batteries or ultracapacitors.
5. The motor parallel transmission portable angle grinder as claimed in claim 1 or 2, further including installing the power storing and discharging device (210) and the charging control circuit device (216), in which the charging control circuit device (216) is formed by electromechanical and/or solid state electronic circuit device for controlling the external power supply over charging power supply, current and power-down timing for the power storing and discharging device (210).
US12/573,215 2009-10-05 2009-10-05 Motor parallel transmission portable angle grinder Abandoned US20110081847A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/573,215 US20110081847A1 (en) 2009-10-05 2009-10-05 Motor parallel transmission portable angle grinder
TW099219203U TWM407810U (en) 2009-10-05 2010-10-05 Motor parallel transmission portable angle grinder
TW099133846A TW201117916A (en) 2009-10-05 2010-10-05 Motor parallel transmission portable angle grinder
CN2010205560581U CN201848754U (en) 2009-10-05 2010-10-08 Handheld corner grinder with parallel transmission of motor
CN2010102997986A CN102029564A (en) 2009-10-05 2010-10-08 Motor parallel transmission portable angle grinder

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US12/573,215 US20110081847A1 (en) 2009-10-05 2009-10-05 Motor parallel transmission portable angle grinder

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CN (2) CN102029564A (en)
TW (2) TWM407810U (en)

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KR20130116341A (en) * 2011-10-26 2013-10-23 케이테크 가부시키가이샤 Grinding tool with eccentric rotation shaft
US20140215839A1 (en) * 2013-02-01 2014-08-07 Makita Corporation Power tool, such as a portable circular saw, having improved braking and cooling
US20140370791A1 (en) * 2013-06-12 2014-12-18 Robert Bosch Gmbh Hand-Held Power Tool with an Electromotive Drive and at least a First Housing Part
US20150217422A1 (en) * 2014-02-06 2015-08-06 Robert Bosch Gmbh Hand Power Tool having an Electronically Commutated Electric Motor
WO2016072306A1 (en) * 2014-11-05 2016-05-12 株式会社マキタ Electric tool
US20160199958A1 (en) * 2013-08-09 2016-07-14 Robert Bosch Gmbh Portable Power Tool having an Electromotive Direct Drive
WO2017001086A1 (en) * 2015-06-29 2017-01-05 Robert Bosch Gmbh Battery-operated portable power tool having a motor axis and a working axis
JP2017074726A (en) * 2015-10-15 2017-04-20 株式会社マキタ Power tool
US10328563B2 (en) * 2016-03-31 2019-06-25 Guido Valentini Motor control unit and electronically driven hand held and / or hand guided tool comprising such a control unit
US10919124B2 (en) * 2017-05-02 2021-02-16 KAPP Werkzeugmaschinen GmbH Grinding machine
WO2022037952A1 (en) * 2020-08-20 2022-02-24 Robert Bosch Gmbh Hand-held power tool

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