US 12,240,083 B2
Power tool and impact driver
Ding Zhao, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Jul. 7, 2022, as Appl. No. 17/811,124.
Claims priority of application No. 2021-124477 (JP), filed on Jul. 29, 2021; and application No. 2021-183781 (JP), filed on Nov. 11, 2021.
Prior Publication US 2023/0036348 A1, Feb. 2, 2023
Int. Cl. B25B 21/02 (2006.01)
CPC B25B 21/02 (2013.01) 20 Claims
OG exemplary drawing
 
1. A power screw-tightening tool comprising:
a motor including a rotor configured to rotate about a motor rotational axis extending in a front-rear direction;
a plurality of gears disposed more forward than the rotor and configured to be rotated in response to rotation of the motor;
an output part disposed more forward than the plurality of gears and configured to be rotated in response to rotation of the plurality of gears;
a housing including: a motor-housing part, which houses the motor; a grip part, which extends downward from the motor-housing part; and a battery-holding part, which is connected to a lower-end portion of the grip part;
a first circuit board, which is housed in the housing; and
an operation-and-display part disposed at a rear portion of the battery-holding part and electrically connected to the first circuit board by a lead wire, the operation-and-display part including:
a second circuit board;
at least one switch device mounted on the second circuit board and configured to be manipulated by a user to select an application mode of the motor; and
at least one light emitting device mounted on the second circuit board and configured to display the application mode selected by the user.