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US 7,093,668 B2Granted
Power tools
OwnerStephen F. Gass, David S. D'Ascenzoinventors
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Abstract
An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed.
Claims20
An electrically powered hand drill/driver, comprising:
- a rotatable work element adapted to receive a bit;
- a motor adapted to drive the rotation of the work element during powered operation of the drill\driver;
- a body having a housing containing at least the motor and a handle adapted to be gripped by a user while operating the drill/driver;
- a power source adapted to deliver power to the motor;
- at least one user input;
- wherein the at least one user input includes a trigger adapted to be depressed by a user to select powered operation of the drill/driver;
- and
- an electronic motor controller electrically connected to the power source and the motor and configured to regulate rotation of the work element by controlling delivery of power to the motor from the power source, wherein the motor controller is adapted to be selectively configured between a plurality of operating modes, wherein the plurality of operating modes include an operating mode in which the motor controller is adapted to cause less than one revolution of rotation by the work element upon depression of the trigger.
5 more elements
An electrically powered hand drill/driver, comprising:
- a rotatable work element adapted to receive a bit;
- a motor adapted to drive the rotation of the work element during powered operation of the drill\driver;
- a body having a housing containing at least the motor and a handle adapted to be gripped by a user while operating the drill/driver;
- a power source adapted to deliver power to the motor;
- at least one user input;
- wherein the at least one user input includes a trigger adapted to be depressed by a user to select powered operation of the drill/driver;
- and
- an electronic motor controller electrically connected to the power source and the motor and configured to regulate rotation of the work element by controlling the delivery of power to the motor from the power source, wherein the controller is configured to receive a signal when the trigger is depressed, and upon receipt of the signal from the trigger, the controller causes a predetermined number of torque impulses to be incrementally applied to the work element.
5 more elements
Dependencies are inferred from the claim text.