An interface for a battery pack and an electrical combination. The interface may include a battery-receiving portion configured to receive a battery pack and including a cavity. The cavity is defined by a pair of sidewalls with rails defining a groove between the rails and a lower surface of the cavity. The rails are stepped or angled along a battery insertion axis and are configured to guide the sliding engagement of a battery pack within the battery-receiving portion.

The present disclosure is directed to a cordless power tool vibration isolation system. A solution to negative impacts of vibration on a removable battery pack caused by operation of a cordless power tool. Isolating the battery pack from the power tool reduces wear and tear on the battery pack including the pack housing, the pack terminals and internal pack components. A battery pack interface of the power tool including a discrete interface housing that mates with the battery pack and a vibration isolation element that separates and isolates the combination of the discrete interface housing and the battery pack from the power tool and the power tool's associated motor induced vibrations.

An electric power tool includes a main body supporting a tool. An electric motor is housed in the main body and configured to drive the tool. A plurality of battery interfaces is integrally formed on the main body, each battery interface having a positive battery terminal and a negative battery terminal. Each battery interface is configured to removably receive a positive battery terminal and a negative battery terminal of a corresponding one of a plurality of battery packs and to electrically connect the plurality of attached battery packs in series with the electric motor. Each of the plurality of battery packs comprises a movable latch configured to engage a corresponding engagement structure defined on or near the corresponding battery interface.

A magnetic drill is provided with an alternate power source. The drill is comprises of: an electric motor for driving a tool; a controller configured to receive an AC input signal and operable to control a drive signal to the electric motor; an electromagnet arranged in a base of the drill housing and operable, in response to a DC voltage, to magnetically couple the base to a surface proximate to the base; an AC/DC converter configured to receive the AC input signal and operates, independent from the controller and in the presence of the AC input signal, to output a DC voltage to the electromagnet; and an alternate power source circuit that monitors the DC voltage output by the converter and, in the absence thereof, provides an alternate DC voltage to the electromagnet.

A laser level including a housing. At least one laser generator supported by the housing and configured to emit at least one laser beam. A battery receiving portion configured to selectively receive a first battery pack and a second battery pack, the first and second battery packs providing power for the laser generator when received in the battery receiving portion. The first battery pack is configured to be coupleable to at least one of a drill, a saw and a sander. The second battery pack is configured to be blocked from coupling from the at least one of the drill, the saw and the sander to which the first battery pack is coupleable.

A tool system dual rotating heads to allow for sequential operations without changing of the tool tip. The tool system is adapted to allow for complementary repetitive operations. The tool may have opposite facing rotating heads, and may be adapted to have only a selected head at any one time. The tool may include an electric drive motor which drives internal and external cleaning brushes adapted to remove oxidation and contamination from the surfaces of pipe segments before soldering, for example.

An autonomous mobile cleaning robot includes a cavity along a bottom portion of the robot, and a drive configured to support the robot above a floor surface. The drive is configured to propel the robot along the floor surface. The robot further includes a first electrical terminal disposed in the cavity and connected to electrical circuitry of the robot, a battery assembly, and a dovetail joint. The battery assembly includes a battery housing, a battery contained within the battery housing, and a second electrical terminal mounted to the battery housing and configured to engage with the first electrical terminal. The dovetail joint includes a vertically extending projection portion and a vertically extending socket portion.

A cutting tool includes a body portion having a bar shape extending from a first end to a second end, and a sensor unit arranged on a surface of the body portion. The surface of the body portion includes a first surface, a second surface, and a third surface. The sensor unit includes a first strain sensor arranged on any of the first surface, the second surface, and the third surface, a board module electrically connected to the first strain sensor, and a wireless communication unit mounted on the board module and transmitting a signal containing information on strain of the body portion detected by the first strain sensor to the outside. The board module includes a first portion arranged on the first surface, a second portion arranged on the second surface, and a connecting portion electrically connecting the first portion to the second portion.

Devices and mechanisms are disclosed for a simple ejection of the battery-pack from a power-tool with one hand only. The disclosed lock and release mechanisms primarily use one finger while the same hand of the user holds the power-tool. The claimed devices and mechanisms accept and eject two categories of batteries that either slideably attach to the bottom of the power-tool or are inserted into the handle of the power-tool.

Devices and mechanisms are disclosed for a simple ejection of the battery-pack from a power-tool with one hand only. The disclosed lock and release mechanisms primarily use one finger while the same hand of the user holds the power-tool. The claimed devices and mechanisms accept and eject two categories of batteries that either slideably attach to the bottom of the power-tool or are inserted into the handle of the power-tool.