Power tool

{
  "publication_number": "US8517558B2",
  "country": "US",
  "kind": "B2",
  "title": "Power tool",
  "abstract": "A power tool includes a body housing a motor and a power transmission mechanism positioned ahead of the motor for transmitting a power of the motor, a handle grip having an upper end portion connected to an approximately intermediate portion of the body and a lower end portion to which a battery is connected, a light emitting element positioned below the power transmission mechanism and receiving electrical power from the battery for illuminating a portion ahead of the body, and a trigger positioned below the power transmission mechanism for controlling a supply of the electrical power from the battery to the motor and to the light emitting element.",
  "claims": [
    "1. A power tool comprising: a body including a housing and a hammer case connected to the front of the housing; a motor housed in the housing; an impact mechanism positioned ahead of the motor for transmitting a power of the motor, the impact mechanism being housed in the hammer case; a handle grip having an upper end portion connected to an approximately intermediate portion of the body and a lower end portion to which a battery is connected; a light emitting element positioned below the hammer case and receiving electrical power from the battery for illuminating a portion ahead of the body; and a trigger positioned below the hammer case for controlling a supply of the electrical power from the battery to the motor and to the light emitting element, the light emitting element being housed in the housing above the trigger.",
    "2. A power tool comprising: a body including a housing and a hammer case connected to the front of the housing; a motor housed in the housing; an impact mechanism positioned ahead of the motor for transmitting a power of the motor, the impact mechanism being housed in the hammer case; a handle grip having an upper end portion connected to an approximately intermediate portion of the body and a lower end portion to which a battery is connected; a trigger positioned below the hammer case for controlling a supply of electrical power from the battery to the motor; and a light emitting element positioned between the hammer case and the trigger and receiving an electrical power from the battery for illuminating a portion ahead of the body, the light emitting element being housed in the housing above the trigger.",
    "3. A power tool comprising: a body including a housing and a hammer case connected to the front of the housing; a motor housed in the housing; an impact mechanism positioned ahead of the motor for transmitting a power of the motor, the impact mechanism being housed in the hammer case; a handle grip having an upper end portion connected to an approximately intermediate portion of the body and a lower end portion to which a battery is connected; a light emitting element receiving electric power from the battery for illuminating a portion ahead of the body; and a trigger controlling a supply of electrical power from the battery to the motor and to the light emitting element, the light emitting element and the trigger being arrayed in a downward extending direction of the handle, the light emitting element being housed in the housing."
  ],
  "description_excerpt": "The present invention relates to a power tool that has a light for illuminating a fastener affixed to a workpiece or illuminating the bit used to drive the fastener.\n\nPower tools used to drive a screw or other threaded fastener by way of a bit or other end tool, and having a light, are now common. When the power tool is used in a dark place, the light illuminates both the fastener being affixed to the workpiece, and the bit used to drive the fastener, thereby making it easier to use the power tool in dark places. More specifically, as shown in FIG. 14, this power tool 401 has a body 410, and inside the body 410 has a motor not shown as the drive source, and mechanical parts not shown for transferring torque from the motor not shown. An end output unit not shown is housed near the distal end inside the body 410, and a tool chuck 411 is disposed to this distal end. The tool chuck 411 is drivably linked to the end output unit not shown, and an end tool is chucked in the tool chuck 411. The end output unit not shown is drivably linked inside the body 410 to the motor not shown through the mechanical parts not shown, torque from the motor is thereby transferred to the end output unit, and the end output unit is thus driven. By thus driving the chucked end tool not shown, the screw or other fastener can be tightened to the workpiece or loosened.\n\nA handle grip 410 C that is gripped by the user when using the power tool is rendered integrally to the body 410. A pull trigger 413 for starting and stopping driving the motor not shown is disposed at the top part of the handle grip 410 C. As shown in FIG.",
  "cpc": [
    "B25B 23/18",
    "B25F 5/021",
    "Y10T 408/21",
    "Y10T 408/96"
  ],
  "ipc": [
    "B25B 23/18",
    "B25F 5/00",
    "B25F 5/02"
  ],
  "assignees": [
    "OOMORI KATSUHIRO",
    "YOSHIMIZU CHIKAI",
    "HARADA HIDEKAZU",
    "TAKANO NOBUHIRO",
    "HITACHI KOKI KK"
  ],
  "inventors": [
    "OOMORI KATSUHIRO",
    "YOSHIMIZU CHIKAI",
    "HARADA HIDEKAZU",
    "TAKANO NOBUHIRO"
  ],
  "filing_date": "2011-10-19",
  "publication_date": "2013-08-27",
  "grant_date": "2013-08-27",
  "priority_date": "2002-01-21",
  "application_number": "US-201113276663-A",
  "family_id": "27606035",
  "citations": [
    "CN2210755Y",
    "CN2365021Y",
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    "JP2001057293A",
    "JP2001198853A",
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    "JP2001300867A",
    "JPH01117882A",
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  ]
}