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Korea Railroad Research Institute patents


Recent patent applications related to Korea Railroad Research Institute. Korea Railroad Research Institute is listed as an Agent/Assignee. Note: Korea Railroad Research Institute may have other listings under different names/spellings. We're not affiliated with Korea Railroad Research Institute, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Korea Railroad Research Institute-related inventors


Carbon fiber layer having carbon coating

A carbon fiber layer having a carbon coating is provided. The disclosed carbon fiber layer having a carbon coating includes: a carbon fiber layer in which a plurality of carbon fibers are arrayed; and a thin carbon film layer, comprising carbon, coated on the surface of the carbon fiber layer.. ... Korea Railroad Research Institute

Energy harvester and wireless sensor device having energy harvester

A wireless sensor device includes: an energy harvester configured to convert vibration generated from a broadband vibration source into electricity, an elastic member arranged to receive the vibration and a communication unit fixed by the elastic member, supplied with the converted electricity from the energy harvester, and configured to transmit sensing information obtained by sensing a measurement target. The elastic member operates as a mechanical filter configured to limit a frequency range and an acceleration magnitude of the vibration to be transferred to the communication unit for stabilizing the performance of the communication unit, and the communication unit is arranged to receive vibration passing through the elastic member.. ... Korea Railroad Research Institute

Charging apparatus for unmanned aerial vehicles and method thereof

A charging apparatus for unmanned aerial vehicles and a charging method thereof. The charging apparatus includes: a transmit coil provided to a charging station and generating a magnetic field; a reception coil generating induced electromotive force according to variation of magnetic flux of the transmit coil; a reception coil adjuster adjusting at least one of an inclination and an orientation of the reception coil; and a controller controlling at least one of the inclination and the orientation of the reception coil by controlling the reception coil adjuster according to magnitude of the induced electromotive force generated in the reception coil by the magnetic field generated in the transmit coil.. ... Korea Railroad Research Institute

Apparatus and method for controlling ptt service by multiplexing call originator and floor arbitrator

A method of mission critical push to talk (mcptt) service performed by a mobile terminal includes: generating, at the mobile terminal, a group call announcement for off-network mission critical push to talk (mcptt) service, the group call announcement for off-network mcptt service including information of a period of the group call announcement for off-network mcptt service; controlling a transceiver to periodically transmit, to one or more mobile terminals, the group call announcement for off-network mcptt service based on the period; in response to the transmitted group call announcement for off-network mcptt service, receiving a response from the one or more mobile terminals; and establishing, based on the response from the one or more mobile terminals, a group call with the one or more mobile terminals by setting a direct wireless communication with the one or more mobile terminals.. . ... Korea Railroad Research Institute

Rail tie having embedded automatic differential settlement compensation apparatus using oil pressure for railroad tracks

By supporting a space generated by a settlement of the track bed gravel or asphalt roadbed underneath a concrete rail tie with cylindrical rods, and installing the present invention, one each separately, on the left and right sides of the concrete rail tie, recovery from settlements is automatic, and the response to differential settlements of the left and right rails of the track due to the train load can be easily facilitated, and by installing pressure reducing valves on the upper part of the concrete rail ties, pressure can be reduced while maintaining the track system as is without having to dismantle the concrete rail ties, and accordingly the usability of the concrete rail ties can be improved.. . ... Korea Railroad Research Institute








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