A power tool, for example, a portable circular saw, includes a fan, a motor configured to rotate the fan, an output part or shaft driven by the motor, a motor housing that houses the motor, a grip housing connected to the motor housing, a trigger associated with the grip housing, and a brake member configured to brake a rotation of the motor, the brake member being mounted inside the grip housing. The brake member may be a resistive element of a rheostatic braking system. The housing and fan are configured such that cooling air is directed to cool the brake member.

The present invention describes an invention called the “Handheld Powered Box Cutter” which makes it much easier and faster to cut up cardboard packaging and boxes. It uses a handheld ergometric compact design and uses a rechargeable battery-operated motor, to drive a protected rapidly oscillating cutting blade, to ease the task of slicing various thicknesses of cardboard. The cutting blade is housed within a hooked protective cutting slot area. This slot allows pieces of cardboard to be slid into a rapidly oscillating cutting blade and it protects human fingers from being cut by the blade.

The present invention describes an invention called the “Handheld Powered Box Cutter” which makes it much easier and faster to cut up cardboard packaging and boxes. It uses a handheld ergometric compact design and uses a rechargeable battery-operated motor, to drive a protected rapidly oscillating cutting blade, to ease the task of slicing various thicknesses of cardboard. The cutting blade is housed within a hooked protective cutting slot area. This slot allows pieces of cardboard to be slid into a rapidly oscillating cutting blade and it protects human fingers from being cut by the blade.

A vegetation cutting device comprising a housing rotatably coupled to a shaft; a cutting head comprising a rotary cutting device for cutting vegetation, the cutting head being coupled to the shaft and being arranged to move between an edging mode in which the rotary cutting device rotates in a substantially horizontal plane; a motor mounted in the housing, the motor being arranged to drive the rotary cutting device; and a switching device mechanically coupled between the housing and the shaft and arranged to be actuated when the shaft rotates relatives to the housing thereby changing the speed of the rotary cutting device when the cutting head moves between the edging mode and trimming mode.

An electronic knife assembly and associated systems and methods are disclosed herein. In some embodiments, the knife includes a blade and a handle operably couplable to the blade. The handle can include an oscillator operably coupled to the blade, at least one sensor configured to obtain one or more measurements, and a controller operably coupled to the oscillator and the least one sensor. The measurements from the sensor can include a spatial position of the electronic knife, a spatial orientation of the electronic knife, a mass of a user's hand, a grip of the user's hand, and/or a resistance to the oscillation of the blade. The controller can adjust an operating frequency of the oscillator based at least partially on the one or more measurements from the at least one sensor. The handle can also include a wireless power supply.

An electronic knife assembly and associated systems and methods are disclosed herein. In some embodiments, the knife includes a blade and a handle operably couplable to the blade. The handle can include an oscillator operably coupled to the blade, at least one sensor configured to obtain one or more measurements, and a controller operably coupled to the oscillator and the least one sensor. The measurements from the sensor can include a spatial position of the electronic knife, a spatial orientation of the electronic knife, a mass of a user's hand, a grip of the user's hand, and/or a resistance to the oscillation of the blade. The controller can adjust an operating frequency of the oscillator based at least partially on the one or more measurements from the at least one sensor. The handle can also include a wireless power supply.

A system for controlling operation of a power tool. The system includes a handpiece having a power tool, a radio frequency identification (RFID) tag, and a wireless transceiver. The system also includes a power pack having an electric motor driving the power tool. The power pack also includes a wireless transceiver, an RFID reader, and non-transitory computer-readable storage media having computer-executable instructions for pairing the handpiece to the power pack. When executed by at least one processor, the computer-executable instructions cause the at least one processor to: interrogate the RFID tag with the RFID reader; receive an RFID signal from the RFID tag including identifying information for the handpiece; store the unique identifying information for the handpiece at the power pack; and, based on receipt of the unique identifying information, complete wireless pairing of the handpiece to the power pack.

The present application discloses an electric cutter assembly, including a handle component and a blade component configured movably on the handle component, wherein the handle component is provided therein with a driving component for driving the blade component to reciprocate relative to the handle component and a storage battery electrically connected to the driving component, and the handle component is further provided with a charging interface electrically connected to the storage battery. The electric cutter assembly provided in the present application has the driving component powered with a built-in storage battery so that the handle component can drive the blade component to reciprocate and cut food materials without connecting to an external power source, which effectively avoids the hindrance of the power cord in the use of the electric cutter assembly, and the user can move the electric cutter assembly to any desired position to perform food material processing, which is convenient for the user.

The present application discloses an electric cutter assembly, including a handle component and a blade component configured movably on the handle component, wherein the handle component is provided therein with a driving component for driving the blade component to reciprocate relative to the handle component and a storage battery electrically connected to the driving component, and the handle component is further provided with a charging interface electrically connected to the storage battery. The electric cutter assembly provided in the present application has the driving component powered with a built-in storage battery so that the handle component can drive the blade component to reciprocate and cut food materials without connecting to an external power source, which effectively avoids the hindrance of the power cord in the use of the electric cutter assembly, and the user can move the electric cutter assembly to any desired position to perform food material processing, which is convenient for the user.

The present invention is directed to a reciprocating culinary knife assembly. The assembly is battery operated and operates a steak knife in reciprocating fashion. An ergonomic oversized handle portion is designed for users with arthritis or other debilitating conditions that render handling small implement difficult. A single removable battery pack is contained within a battery receiving chamber formed at one end of the housing for the assembly, the pack designed for easy snap fit within the chamber. The housing is made of a rigid material which is covered with a pliable material such as rubber or silicon to enhance gripping and further reduce discomfort. A pressure sensing mechanism operates as an on/off switch to enhance user safety.