Abstract: A touch input device includes a printed circuit board, a second substrate receiving a touch input from a user, and a spring member mounted on the surface of the printed circuit board and arranged to be in contact with the second substrate. The spring member includes a middle portion formed by a spring having a first diameter; a first end portion which extends from one side of the middle portion and the diameter of which expands to be larger than the first diameter; and a second end portion which extends from the other side of the middle portion and the diameter of which expands to be larger than the first diameter.

Abstract: A flotation system for an offshore power generation platform comprises: multiple buoyant bodies each containing a high-pressure air and ballast water therein to create buoyancy; connecting members connecting the multiple buoyant bodies to each other; ballast water flowing tubes through which the ballast water contained in the multiple buoyant bodies flows with respect to each other; a high-pressure tank supplying the high-pressure air into the multiple buoyant bodies; a compressor replenishing air pressure present in the high-pressure tank; an equilibrium sensor sensing an equilibrium state of each of the multiple buoyant bodies and transmitting a signal; and a controller controlling, in response to the signal from the equilibrium sensor, an amount of air supplied from the high-pressure tank to the buoyant body and an amount of air discharged from the buoyant body.

Abstract: A flotation system for an offshore power generation platform comprises: multiple buoyant bodies each containing a high-pressure air and ballast water therein to create buoyancy; connecting members connecting the multiple buoyant bodies to each other; ballast water flowing tubes through which the ballast water contained in the multiple buoyant bodies flows with respect to each other; a high-pressure tank supplying the high-pressure air into the multiple buoyant bodies; a compressor replenishing air pressure present in the high-pressure tank; an equilibrium sensor sensing an equilibrium state of each of the multiple buoyant bodies and transmitting a signal; and a controller controlling, in response to the signal from the equilibrium sensor, an amount of air supplied from the high-pressure tank to the buoyant body and an amount of air discharged from the buoyant body.

Abstract: Disclosed is a direction indicator interposed between a front wheel and a handle bar for controlling a rotating direction of the front wheel and operated in cooperation with the rotating direction of the front wheel, so that others can visibly recognize the change of traveling direction of the running kickboard. The kickboard includes a board, front and rear wheels installed to a front and rear of the board, and a handle bar coupled to a bracket supporting the front wheel for controlling a rotating direction of the front wheel. The kickboard further includes a direction indicator installed between the front wheel and the handle bar; in which the direction indicator is provided at a bottom surface thereof with a cut portion to receive the bracket, and the cut portion has bent side plates each contacted with sides of the bracket.

Abstract: Disclosed is a child safety door having a door locking device, in which the child safety door is installed to a door frame of a house to safely keep a child indoors. The child safety door includes a rectangular door pivoted around a shaft rod and a door supporting frame coupled to the door for supporting the door. The child safety door includes a door locking device including a body having a knob at one side of the body, and a plurality of locking pins positioned in the body and restraining the door by resilience of a spring. The body has a pivoting plate engaged to the knob, an arm coupled to the pivoting plate, and an actuating plate coupled to the arm and pulling the locking pin to unlock the door.

Abstract: There are provided with a gas detecting sensor and a gas detecting device for controlling a ventilation system of a vehicle using the gas detecting sensor. The gas detecting sensor of the present invention includes two kinds of gas sensing layers separately formed and a heater assembly for heating the two sensing layers to different temperatures.