Abstract: An embodiment of the present disclosure provides an arc risk management method comprising: pre-processing measurement values of currents flowing into an electric apparatus; estimating a level of arc energy in the electric apparatus by inputting the measurement values into one artificial intelligence network comprising a first layer including a dilated convolutional neural network and a second layer including a recurrent neural network; and indicating an arc risk to the electric apparatus in a quantitative way according to the level of arc energy.

Abstract: The present invention relates to an aluminum base alloy with high thermal conductivity, and more particularly, to an alloy for die casting that does not become brittle and has high thermal conductivity, so as to be easily used for LED lighting parts, and contains 0.2 to 2.0 wt % of Mg, 0.1 to 0.3 wt % of Fe, 0.1 to 1.0 wt % of Co, with the remainder being Al.

Abstract: Disclosed is a razor and, more particularly, a rotating type razor having a cartridge which is replaceable, rotatable and controllable in angle. To this end, the rotating type razor, which includes a handle provided at one side thereof, a head provided at the other side thereof, and a razor blade cartridge connected to the head, further includes a mover configured to rotate the razor blade cartridge. The razor blade cartridge is rotated by 180 degrees about the head as a rotation axis by the mover so as to be variable in position when shaving the upper jaw and when shaving the lower jaw in a state in which a body of the razor has a fixed orientation.

Abstract: Provided is a ball hinge structure in which a ball hinge can be freely rotated in various directions and maintain a fixed state. The ball hinge structure includes a ball hinge rotatably installed in a hinge housing; and a first hinge resistor and a second hinge resistor elastically supported with respect to each other by a second spring, wherein the second hinge resistor is closely attached to a circumference at a side of a sphere of the ball hinge, the first hinge resistor is elastically supported by a first spring provided on a top surface of a hinge housing cap coupled to a lower portion of the hinge housing, and a groove is formed in the bottom of the ball hinge, and thus the first hinge resistor is lifted in a position as high as the height of the groove.

Abstract: Disclosed is a razor and, more particularly, a rotating type razor having a cartridge which is replaceable, rotatable and controllable in angle. To this end, the rotating type razor, which includes a handle provided at one side thereof, a head provided at the other side thereof, and a razor blade cartridge connected to the head, further includes a mover configured to rotate the razor blade cartridge. The razor blade cartridge is rotated by 180 degrees about the head as a rotation axis by the mover so as to be variable in position when shaving the upper jaw and when shaving the lower jaw in a state in which a body of the razor has a fixed orientation.

Abstract: Provided is a ball hinge structure in which a ball hinge can be freely rotated in various directions and maintain a fixed state. The ball hinge structure includes a ball hinge rotatably installed in a hinge housing; and a first hinge resistor and a second hinge resistor elastically supported with respect to each other by a second spring, wherein the second hinge resistor is closely attached to a circumference at a side of a sphere of the ball hinge, the first hinge resistor is elastically supported by a first spring provided on a top surface of a hinge housing cap coupled to a lower portion of the hinge housing, and a groove is formed in the bottom of the ball hinge, and thus the first hinge resistor is lifted in a position as high as the height of the groove.

Abstract: The present invention relates to an aluminum base alloy with high thermal conductivity, and more particularly, to an alloy for die casting that does not become brittle and has high thermal conductivity, so as to be easily used for LED lighting parts, and contains 0.2 to 2.0 wt % of Mg, 0.1 to 0.3 wt % of Fe, 0.1 to 1.0 wt % of Co, with the remainder being Al.

Abstract: A device for regulating a motor-driven foldable rear view mirror of an automobile is disclosed. The device has a shaft reinforcing ring having a plurality of U-shaped slots on its upper outside edge, and a frame reinforcing ring having a plurality of V-shaped slots on its upper inside edge. The frame reinforcing ring is placed about the shaft reinforcing ring, so that their slots are opposed to each other respectively. A plurality of regulating balls are seated on the slots of the reinforcing rings and placed in guide depressions of a shaft gear, so that the balls can move radially of the shaft. The reinforcing rings are tightly compressed by a compression coil spring and tightly kept in their places during the operation of the device.