Powered ratcheting torque wrench
AssigneeMilwaukee Electric Tool Corporation
InventorsWyatt R. Silha, Jacob P. Schneider, John S. Dey, IV, Hans T. Banholzer
Life of this patent
Estimating the term…
Abstract
A power tool includes a housing defining a grip portion, a motor having a motor drive shaft, a drive assembly coupled to the motor drive shaft and driven by the motor, an output assembly coupled to the drive assembly and having an output member that receives torque from the drive assembly, causing the output member to rotate about an axis, and a transducer assembly disposed between the grip portion and the output assembly to measure the amount of torque applied through the output member, when the motor is deactivated, in response to the power tool being manually rotated about the axis.
Claims25
A power tool comprising:
- a main housing defining a grip portion;
- an electric motor having a motor drive shaft;
- a drive assembly coupled to the motor drive shaft and driven by the electric motor;
- an output assembly coupled to the drive assembly and having an output member that receives torque from the drive assembly, causing the output member to rotate about an axis;
- a frame disposed between the electric motor and the output member;
- a transducer assembly disposed between the grip portion and the output assembly and including a sensor that measures the amount of torque applied through the output member via a bending force exerted on the frame, when the electric motor is deactivated, in response to the power tool being manually rotated about the axis, the transducer assembly configured to measure the amount of torque applied through the output member when the electric motor is activated;
- and
- an electronic processor that is electrically connected to the transducer assembly and the electric motor,
- wherein in response to the amount of torque applied through the output member as measured by the sensor on the frame reaching a predetermined torque threshold when the electric motor is activated, the electronic processor deactivates the electric motor, at which point the sensor on the frame then measures the amount of torque through the output member while the electric motor is deactivated and the power tool is manually rotated about the axis.
Dependencies are inferred from the claim text.