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US 6,742,601 B2Granted
Battery powered tools
AssigneeMakita Corporation
InventorFumitoshi Numata
Life of this patent
Estimating the term…
Abstract
A power tool (1) includes a tool body (3) on which a battery (10) as a power source is mounted. A switch (7) is electrically connected to the battery for supplying power to a motor (6) that is disposed within the tool body. An ON lock mechanism (12,20) serves to lock the switch in an ON position. The ON lock state of the switch can be released or the switch can be turned OFF when the battery is removed from the power tool.
Claims20
A power tool comprising:
- a tool body having a battery mounting space defined to receive and mount a battery,
- a switch electrically coupling the battery to a motor and
- an ON lock mechanism arranged and constructed to lock the switch in an ON position, and to automatically release the switch from the ON position when the battery is removed from the power tool.
A power tool comprising:
- a body having a battery mounting space for receiving a battery, an electric motor disposed within the body, a switch electrically connected to the motor and being movable between an ON position and an OFF position for starting and stopping the motor, respectively, and an ON lock mechanism arranged and constructed to lock the switch in the ON position and to automatically release the switch from the ON position in response to removal of the battery from the power tool.
A power tool comprising:
- a body having a battery mounting space for receiving a battery,
- an electric motor disposed within the body,
- a switch electrically connected to the motor and being movable between an ON position and an OFF position for starting and stopping the motor, respectively,
- an ON lock mechanism arranged and constructed to releaseably lock the switch in the ON position, and
- an ON lock releasing mechanism arranged and constructed to automatically release the switch from the ON position and to return the switch to the OFF position, in response to removal of the battery from the battery mounting space.
2 more elements
A power tool comprising:
- a housing defining a battery mounting space for receiving a battery,
- a tool extending from the housing,
- a motor disposed within the housing and driving the tool,
- a switch electrically coupling the battery to a motor,
- means for locking the switch in an ON position and for automatically releasing the switch from the ON position without operator assistance when the battery is removed from the power tool.
2 more elements
Dependencies are inferred from the claim text.