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US 2015/0306748 A1Published application
Energy-efficient electric screw drivers
OwnerHsiu-Lin Hsuinventor
Life of this patent
Estimating the term…
Abstract
An energy-efficient electric screw driver designed to have three adjustment modes, including: Sport, Normal and ECO. The capacitor is mounted in the control panel of the electric screw driver and is combined with the battery for use. MCU can limit and change current at different torsions and startup current when the rotating speed is constant. The battery current output can be controlled. At different modes, the power saving effect can be achieved. Lower current also reduces battery temperature, saves power and prolongs battery life.
Claims6
An energy-efficient electric screw driver;
- the control device structure of the electric screw driver comprises:
- the energy-efficient switch, capacitor, MOSFET and MCU can be connected electrically;
- the control device output is electrically connected with the battery and the output is electrically connected with the motor.
Dependencies are inferred from the claim text.