Abstract: A power tool is provided with a coating to distribute static electricity away from the surface of the handle of the tool. The tool includes a handle configured to be grasped by a user. The handle includes a surface and a first material having a first surface resistivity. The tool includes a coating covering at least a portion of the handle. The coating is configured to distribute static electricity away from the surface. The coating is made of a second material having a second surface resistivity less than the first surface resistivity.

Abstract: A power tool and a printed circuit board assembly (“PCBA”) for the power tool. The PCBA includes, for example, a printed circuit board (“PCB”), a heat sink, a spacer between the PCB and the heat sink, and a gap pad. The PCB and the heat sink are fastened to one another via fasteners so the spacer absorbs excess forces torsional forces from torques applied to the fasteners. The gap pad is placed within an opening or recess of the spacer to contact one or more FETs on the PCB. In some embodiments, the PCBA includes a second heat sink or rigid member on the opposite side of the PCB than the spacer to further distribute excess torsional forces from torques applied to the fasteners.

Abstract: An impact tool includes a housing, an electric motor supported in the housing, and a drive assembly for converting a continuous torque input from the motor to consecutive rotational impacts upon a workpiece capable of developing at least 1,700 ft-lbs of fastening torque. The drive assembly includes an anvil rotatable about an axis and having a head adjacent a distal end of the anvil. The head has a minimum cross-sectional width of at least 1 inch in a plane oriented transverse to the axis. The drive assembly also includes a hammer that is both rotationally and axially movable relative to the anvil for imparting the consecutive rotational impacts upon the anvil, and a spring for biasing the hammer in an axial direction toward the anvil.

Abstract: An electric tool, a blower and a method of discharging electrostatic charge in an electric tool. The tool may include a housing, a motor supported by the housing and powered by a power source, the motor including a rotor, a fan supported by the housing and driven by the motor to cause an air flow, and a wire electrically connected between the rotor and a terminal of the power source and operable to dissipate electrostatic discharge in the tool.

Abstract: A power tool and a printed circuit board assembly (“PCBA”) for the power tool. The PCBA includes, for example, a printed circuit board (“PCB”), a heat sink, a spacer between the PCB and the heat sink, and a gap pad. The PCB and the heat sink are fastened to one another via fasteners so the spacer absorbs excess forces torsional forces from torques applied to the fasteners. The gap pad is placed within an opening or recess of the spacer to contact one or more FETs on the PCB. In some embodiments, the PCBA includes a second heat sink or rigid member on the opposite side of the PCB than the spacer to further distribute excess torsional forces from torques applied to the fasteners.

Abstract: A power tool and a printed circuit board assembly (“PCBA”) for the power tool. The PCBA includes, for example, a printed circuit board (“PCB”), a heat sink, a spacer between the PCB and the heat sink, and a gap pad. The PCB and the heat sink are fastened to one another via fasteners so the spacer absorbs excess forces torsional forces from torques applied to the fasteners. The gap pad is placed within an opening or recess of the spacer to contact one or more FETs on the PCB. In some embodiments, the PCBA includes a second heat sink or rigid member on the opposite side of the PCB than the spacer to further distribute excess torsional forces from torques applied to the fasteners.

Abstract: A power tool that includes a motor configured to drive a working element, a power supply that is coupled to the motor to provide power to the motor, a shunt circuit that is coupled to the power supply, and a controller. The shunt circuit includes a shunt switch and a shunt element and is configured to hold a voltage of the power supply below a high voltage threshold. The shunt switch is switchable between a conducting state, in which the shunt switch conducts current through the shunt element, and a non-conducting state, in which the shunt switch does not conduct current through the shunt element. The controller is coupled to the motor, the power supply, and the shunt circuit and is configured to determine the voltage of the power supply, and control the shunt switch based on the voltage from the power supply.

Abstract: A power tool and a printed circuit board assembly (“PCBA”) for the power tool. The PCBA includes, for example, a printed circuit board (“PCB”), a heat sink, a spacer between the PCB and the heat sink, and a gap pad. The PCB and the heat sink are fastened to one another via fasteners so the spacer absorbs excess forces torsional forces from torques applied to the fasteners. The gap pad is placed within an opening or recess of the spacer to contact one or more FETs on the PCB. In some embodiments, the PCBA includes a second heat sink or rigid member on the opposite side of the PCB than the spacer to further distribute excess torsional forces from torques applied to the fasteners.