Abstract: The present invention relates to a system for wirelessly transmitting and receiving self- powered power-free fixed temperature type fire detection, the system comprising: a self-powered fixed temperature type fire detector operating by the heat generated by fire occurrence and self- powered; a receiver for receiving and monitoring a fire occurrence signal through wireless communication according to the operation of the self-powered fixed temperature type fire detector; and an application part for allowing the signal received from the receiver to be notified in real time, wherein the fire detector is wirelessly installed, self-powered, and maximized in dust and water-resistant efficiencies.

Abstract: The present invention relates to system for wirelessly transmitting and receiving self-powered power-free fixed temperature type fire detection, the system comprising: a self-powered fixed temperature type fire detector operating by the heat generated by fire occurrence and self-powered; a receiver for receiving and monitoring a fire occurrence signal through wireless communication according to the operation of the self-powered fixed temperature type fire detector; and an application part for allowing the signal received from the receiver to be notified in real time, wherein the fire detector is wirelessly installed, self-powered, and maximized in dust and water-resistant efficiencies.

Abstract: An 2-position/3-way solenoid valve for an anti-lock brake system utilizing a modulator block as a component of the valve is disclosed. A valve housing is provided with only a first port, one of three pathways formed in the modulator block is communicated with the first port, and the others thereof serve as second and third ports. One end of the valve housing is closed by a cover, and an inlet nozzle is fitted at the other end thereof with a push rod inserted in a nozzle hole of the inlet nozzle. The push rod is fixed to an armature included within a first chamber which is defined by the inlet nozzle and the cover. The first chamber is communicated with the first port. A spool is integrally formed to the push rod and is positioned in a second chamber, which is defined by the inlet nozzle and an outlet nozzle mounted on the third port of the modulator block, to close one of the inlet and outlet nozzles. A method for fabricating the valve is also disclosed.

Abstract: A 2-position 3-way solenoid valve is disclosed having a hinged structure. The solenoid valve includes a hollow cylindrical housing and first and second covers hermetically coupled to both ends of the housing. The first cover has first and third ports, and the housing has a second port. A diaphragm divides an inner chamber within the housing into first and second chambers, and the first to third ports are communicated with the first chamber. The second chamber contains an armature, a solenoid assembly and a core, and the armature is fixed to a push rod which extends to the first chamber through a diaphragm hole. A first spool for opening/closing the first port is provided to an end of the push rod within the first chamber. A step is provided to coupling portion of the first spool and the push rod by the difference of their diameters, and a valve lever extends perpendicularly to the push rod to engage with the step.

Abstract: A 3-position 3-way solenoid valve for an anti-lock brake system simplifies a structure of a modulator block and has an excellent assemblage with the modulator block. The solenoid valve has a first chamber communicated with an inlet port and outlet port and a second chamber communicated with the first chamber via a barrier-wall hole in a barrier wall, in which the first chamber includes an inlet valve for opening/closing the inlet port, an outlet valve for opening/closing a through hole, a plunger, a first spring between the inlet valve and plunger, a second spring between the plunger and outlet valve and a cylinder having one end connected to the outlet valve no accommodate the inlet valve, and a second chamber communicated with an exhaust port includes an armature. One end of a push rod is fixed to the armature and extends to the first chamber via the barrier-wall hole and thruhole in the outlet valve, and other end thereof is coupled to the plunger.