Original name record: MILWAUKEE ELECTRIC TOOL CORPORATION

A vacuum cleaner including a power head having a power head housing at least partially enclosing a power head volume therein, a blower assembly at least partially positioned within the power head volume, and a docking interface including a plurality of connection elements. Where each connection element of the plurality of connection elements is configured to form a releasable connection with an accessory.

A drilling tool including a shank portion, a drill portion, and a collar. The shank portion includes a shank first end that is configured to be coupled to a power tool and a shank second end opposite the shank first end. The drill portion includes a drill first end, a drill second end, and a cutting head positioned at the drill second end. The collar is configured to dampen vibrations transferred between the shank portion and the drill portion during operation of the drilling tool. The collar includes a collar first end, a collar second end, and an apex. The collar first end is attached to the shank second end. The collar second end is attached to the drill first end. The apex defines a maximum outer dimension of the collar. The apex is positioned between the collar first end and the collar second end.

A blade includes a body having a cutting portion with an edge and a plurality of cutting teeth sequentially aligned along the edge. Each cutting tooth of the plurality of cutting teeth is formed from a corresponding one of a plurality of carbide inserts that is discretely resistance welded to the edge. The body includes at least 15 teeth per inch.

A circular saw blade includes an arbor located in a center of the body, a bore positioned in the arbor and configured to fit on a power tool shaft, a plurality of cutting teeth spaced along an outer edge of the body, and a plurality of openings formed in the body between the plurality of cutting teeth and the arbor. The plurality of openings includes a first opening and a second opening disposed radially inward from the first opening relative to the center of the body. The second opening at least partially overlapping the first opening in a circumferential direction, a radial direction, or both.

One example power tool includes a primary housing. A motor may be situated within the primary housing. The power tool may further include a transmission mechanism configured to transmit rotational energy from the motor to an output unit of the power tool. The power tool may further include a secondary housing in which at least a portion of the transmission mechanism is located. The power tool may further include a light source mounted to a front end of the secondary housing. The power tool may include one or more wires that extend through the passageway and that are electrically connected to the light source.

Method and system for programming a power tool from an external device. The method includes establishing a first communication link with a server. The server includes a profile bank that includes mode profiles generated by a plurality of users. The method further includes receiving, over the first communication link, a list of mode profiles representing a subset of the mode profiles of the profile bank. The method further includes receiving, in response to user input from a first user on the external device, a selection of a mode profile. The method further includes transmitting, over the first communication link, the selection of the mode profile. The method further includes receiving, over the first communication link, the mode profile, the mode profile having been generated by a second user. The method further includes transmitting wirelessly, to the power tool, the mode profile to configure the power tool.

Battery pack terminal temperature monitoring. The battery pack includes a housing, a battery cell within the housing, a power terminal and a temperature terminal, and a temperature integrated circuit in thermal contact with the power terminal and electrically connected to the temperature terminal. The temperature integrated circuit is configured to detect a temperature of the power terminal, compare a temperature of the power terminal to a temperature threshold, and pull the temperature terminal low in response to the temperature of the power terminal satisfying the temperature threshold.

A battery pack including a first battery cell and a second battery cell. The first battery cell is received at least partially within a primary cell casing and extends along a first axis. The second battery cell is received at least partially within an auxiliary cell casing extending along a second axis, the second battery cell being movable relative to the first battery cell.

A power tool device including a housing, first and second battery pack terminals, at least one bulk capacitor, a pre-charge circuit, and a discharge circuit. The pre-charge circuit includes at least one resistance connected in series with the at least one bulk capacitor, and a pre-charge switch connected in series with the at least one resistance. The pre-charge switch is configured to selectively provide a conductive path to charge the at least one bulk capacitor. The discharge circuit includes a first switch and a second switch connected in series with the at least one bulk capacitor. The first switch and the second switch are configured to be turned on after the at least one bulk capacitor is charged to a DC bus voltage.

A power tool comprising a power tool housing, an auxiliary power source, a user input for user control of power tool operation, and a controller. The controller is configured to receive a control signal from the user input, control the power tool in response to the control signal, receive, from a sensor, a signal indicative of an operational characteristic of the power tool, and selectively provide energy from the auxiliary power source to a load of the power tool based on the operational characteristic of the power tool.

A power tool includes a housing, an electric motor disposed within the housing, a first printed circuit board assembly configured to selectively supply electric current to the electric motor, causing the electric motor to activate and drive a tool element, and a battery receptacle configured to support a removable battery pack. The battery receptacle has a battery terminal block electrically connected to the battery pack to supply electrical current to the first printed circuit board assembly. The power tool further includes a second printed circuit board assembly electrically connected between the first printed circuit board assembly and the battery terminal block. The second printed circuit board assembly has a fuse and a thermistor configured to detect a temperature of the fuse.