Abstract: A working machine may include a rotary blade, an output shaft, a prime mover, a working machine body, a blade cover, and a cover retainment mechanism rotatably supporting the blade cover about a cover rotation axis. The cover retainment mechanism may include a first member including a first cylindrical portion enclosing the output shaft, an outer thread defined in an outer circumferential surface of the first cylindrical portion, and a first cover support portion supporting the blade cover in a first direction which is along the cover rotation axis and a second member including a second cylindrical portion disposed radially outside the first cylindrical portion, an inner thread defined in an inner circumferential surface of the second cylindrical portion and onto which the outer thread is screwed, and a second cover support portion supporting the blade cover in a second direction which is opposite to the first direction.

Abstract: A connection destination malignancy determination system connected to the Internet through a network includes: a connection destination observation unit that observes a connection destination; a connection destination malignancy determination unit that determines a malignancy indicating the degree of maliciousness of the connection destination; and a countermeasure priority determination unit that determines a countermeasure priority indicating the degree of preferential countermeasure required based on the malignancy and an observation result of the connection destination.

Abstract: An electrical apparatus may be provided with: a housing; a first electrical apparatus-side terminal; a first terminal cover configured to move between a covering position and an exposing position; and a first locking member configured to engage with the first terminal cover positioned at the covering position, and configured to move between a lock position at which the first locking member restricts movement of the first terminal cover from the covering position to the exposing position and an unlock position. The first locking member may be configured to move from the lock position to the unlock position while a first target apparatus is slid in the sliding direction to be attached to the housing. When the first locking member is positioned at the lock position, a user may be unable to directly shift the first locking member from the lock position to the unlock position.

Abstract: A working machine may include: a prime mover; a housing that houses the prime mover; a cutting part configured to be driven by the prime mover and cut an object; a dust collecting hose for collecting dust generated by the cutting part cutting the object; and a hose holding member configured to hold the dust collecting hose. The hose holding member may be attached to the housing so as to be swingable about a swing axis.

Abstract: A power cutter disclosed herein may include: a disk blade; a body configured to rotatably support the disk blade about a rotation axis and comprising an electric motor for rotationally driving the disk blade; a plurality of battery packs detachably attached to the body and configured to supply electric power to the electric motor; a grip disposed on the body and configured to be gripped by a user; and a main switch disposed on the grip and configured to electrically connect the plurality of battery packs to the electric motor when the user activates the main switch; wherein a central axis of the grip extends along a reference plane which is perpendicular to the rotation axis of the disk blade, and a distance from the reference plane to the disk blade is less than or equal to 1.5 times a width of the grip.

Abstract: A working machine may include: an output shaft; a rotary blade attached to the output shaft; a prime mover configured to rotate the output shaft; a housing that houses the prime mover and rotatably supports the output shaft; and a blade cover attached to the housing. The sidewall of the blade cover may include a first stopper and a second stopper. The facing portion of the housing may include a first stopper receiver and a second stopper receiver. When the blade cover is pivoted in a first pivot direction of the blade cover, the first stopper may contact the first stopper receiver. When the blade cover is further pivoted in the first pivot direction from a state where the first stopper is in contact with the first stopper receiver, the second stopper may contact the second stopper receiver.

Abstract: An electric working machine may include an output shaft, a rotary blade attached to the output shaft, an output pulley fixed to the output shaft, an input shaft, an input pulley fixed to the input shaft, a transmission belt wrapped around the input pulley and the output pulley, an electric motor including a motor shaft and configured to rotate the motor shaft, a speed reducer configured to reduce a speed of rotation of the motor shaft and transmit the rotation to the input shaft, and a housing that houses the electric motor and the speed reducer, and rotatably supports the input shaft and the output shaft. A rotation axis of the motor shaft may be inclined with respect to a direction which is along a rotation axis of the output shaft.

Abstract: An electrical apparatus may be provided with: a housing; a first electrical apparatus-side terminal; a first terminal cover configured to move between a covering position and an exposing position; and a first locking member configured to engage with the first terminal cover positioned at the covering position, and configured to move between a lock position at which the first locking member restricts movement of the first terminal cover from the covering position to the exposing position and an unlock position. The first locking member may be configured to move from the lock position to the unlock position while a first target apparatus is slid in the sliding direction to be attached to the housing. When the first locking member is positioned at the lock position, a user may be unable to directly shift the first locking member from the lock position to the unlock position.

Abstract: A power cutter disclosed herein may include: a disk blade; a body configured to rotatably support the disk blade about a rotation axis and comprising an electric motor for rotationally driving the disk blade; a plurality of battery packs detachably attached to the body and configured to supply electric power to the electric motor; a grip disposed on the body and configured to be gripped by a user; and a main switch disposed on the grip and configured to electrically connect the plurality of battery packs to the electric motor when the user activates the main switch; wherein a central axis of the grip extends along a reference plane which is perpendicular to the rotation axis of the disk blade, and a distance from the reference plane to the disk blade is less than or equal to 1.5 times a width of the grip.