Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.

Abstract: Lower surface 2c or upper surface 2d of object to be sorted 2 is processed such that arithmetic mean roughness Ra is not less than 0.025 ?m in not less than 50% of lower surface 2c or upper surface 2d, object to be sorted 2 is irradiated with infrared light, and reflected light 4 from lower surface 2c or upper surface 2d of object to be sorted 2 is received, thereby determining a resin type of object to be sorted 2 on the basis of a reflection or absorption spectrum of object to be sorted 2 obtained from reflected light 4.

Abstract: A connector includes a panel, a first housing assembled to the panel, and a second housing fittable to the first housing. A grommet covers the outer circumference of the second housing and has a lip to be brought into close contact with the panel. A flange is provided movably on the outer circumference of the second housing. The flange is regulated in movement with respect to the second housing with the lip away from the panel. A fitting detection mechanism enables the flange to move toward the panel and enables the lip to come in close contact with the panel, with the first housing and the second housing fitting normally together.

Abstract: A propeller fan according to an embodiment of the present invention includes a shaft provided a rotation axis of the propeller fan, and a blade provided on an outer peripheral side of the shaft. The blade has a trailing edge on a rear side of the blade in a rotation direction of the propeller fan. The trailing edge includes a first trailing edge located on an innermost side of the trailing edge, and a second trailing edge adjacent to and outward of the first trailing edge. Where an innermost point of the first trailing edge is a first connection point, a connection point between the first trailing edge and the second trailing edge is a second connection point, and a straight line that extends through the rotation axis and the first connection point is a reference line, the second connection point is located forward of the reference line in the rotation direction, or located on the reference line, and the second trailing edge is located rearward of the second connection point in the rotation direction.

Abstract: A propeller fan includes a cylindrical shaft portion provided on a rotation axis of the propeller fan; a plurality of blades provided on an outer peripheral side of the shaft portion; a connection portion provided adjacent to the shaft portion and connecting two of the plurality of blades that are adjacent to each other in a circumferential direction of the propeller fan; a first rib provided on at least one of a pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on a downstream side in the flow of air, and a second rib provided on at least one of a negative-pressure surface of each of the plurality of blades and a surface of part of the connection portion that is located on an upstream side in the flow of air.

Abstract: A train information management device sends and receives information to and from both a train-controlling in-vehicle wireless station for controlling an operation of a train, and a door-controlling in-vehicle wireless station for controlling vehicle doors. The device includes a wireless train control unit, an automatic operation unit, and a door control unit. The wireless train control unit receives route information represented by a consecutive block sequence and information on a stop limit location that the train may reach without hindering a preceding train, and if this route information includes a station block number, consults an in-vehicle database to extract, before the train arrives at a platform, an arrival track where the train is to stop, a stop target location at a stop station dependent on a travel direction of the train, and which of the vehicle doors is to be opened, and stops the train in accordance with the route information.

Abstract: A connector includes a panel, a first housing assembled to the panel, and a second housing fittable to the first housing. A grommet covers the outer circumference of the second housing and has a lip to be brought into close contact with the panel. A flange is provided movably on the outer circumference of the second housing. The flange is regulated in movement with respect to the second housing with the lip away from the panel. A fitting detection mechanism enables the flange to move toward the panel and enables the lip to come in close contact with the panel, with the first housing and the second housing fitting normally together.

Abstract: A sorting device includes a transport unit, an identification unit, and a plurality of nozzles. Each of the plurality of nozzles has a valve that adjusts a flow amount of pulse air, a pulse air flow path that is connected to the valve, and a pulse air blowing port that is arranged at a tip end of the pulse air flow path. The pulse air flow path has at least one bent portion. An adjustment flow path is connected to the bent portion of the pulse air flow path. An adjustment member capable of increasing and decreasing a volume of the adjustment flow path is provided in the adjustment flow path.

Abstract: In an axial flow fan according to the present invention, a plurality of blades rotate about a rotation axis of the blades to convey a fluid. In the axial flow fan, the plurality of blades each have a leading edge at a leading side in a rotational direction, a trailing edge at a trailing side in the rotational direction, and an outer peripheral edge connecting the leading edge and the trailing edge. The leading edge of one of the plurality of blades and the trailing edge of another blade adjacent to the leading edge of the blade in the rotational direction are connected by a plate-shaped connection portion. The plurality of blades each have at least one plate-shaped reinforcement rib extending from a periphery of the rotation axis toward the outer peripheral edge of the blade.

Abstract: A propeller fan includes a shaft portion disposed on a rotation axis, and a blade disposed on an outer peripheral side of the shaft portion and including a leading edge and a trailing edge. The blade includes a negative pressure surface in which a plurality of recesses are formed, and the plurality of recesses include a first recess and a second recess disposed on the trailing edge side than the first recess in a circumferential direction about the rotation axis as a center. The first recess has a depth larger than a depth of the second recess.

Abstract: Lower surface 2c or upper surface 2d of object to be sorted 2 is processed such that arithmetic mean roughness Ra is not less than 0.025 ?m in not less than 50% of lower surface 2c or upper surface 2d, object to be sorted 2 is irradiated with infrared light, and reflected light 4 from lower surface 2c or upper surface 2d of object to be sorted 2 is received, thereby determining a resin type of object to be sorted 2 on the basis of a reflection or absorption spectrum of object to be sorted 2 obtained from reflected light 4.

Abstract: An on-board device is mounted on a train having a battery capable of supplying power when a vehicle power supply is off, a parking brake to fix a wheel when the train is stopped, and a parking-brake controlling electromagnetic valve to be energized by power supplied from the battery when the parking brake is released, and even when the vehicle power supply is off, retains position information of the train stored when the vehicle power supply is on. The on-board device includes a parking-brake release detecting circuit that has a parking-brake-controlling-electromagnetic-valve energization detecting unit to detect energization to the parking-brake controlling electromagnetic valve when the vehicle power supply is off, and a parking-brake-controlling-electromagnetic-valve energization detection storage unit to store therein a result of detection until stored contents are reset.

Abstract: A train-information management device mounted on a train, includes: an intra-block position calculator to convert information on a kilometrage that indicates a position of the train into information on a block number and an intra-block position of a plurality of blocks into which a route of the train is divided and that are used when a train position is specified by a train radio system; and an on-board router to communicate the information on the block number and the intra-block position to a ground side by using a system that is different from a system that is used for communication between the ground side and a train side via a radio base station in the train radio system.

Abstract: Provided is a resin determination method including: placing an object on a placement surface with a diffusion reflectance of equal to or greater than 80% in an effective wavelength region of infrared light and with arithmetic mean roughness of equal to or greater than 0.25 ?m and equal to or less than 25 ?m; irradiating the object with infrared light; receiving reflected light from the object that has been irradiated with the infrared light; and determining a resin type based on a reflection spectrum or an absorption spectrum obtained by the reflected light.

Abstract: A train wireless system includes a train detecting apparatus on the ground and a controller on a train. The detecting apparatus includes a detector and a calculator. The detector detects that the train is on rails in a block. The calculator measures an on-rail time during which the detector detects the train in the block, and calculates an on-rail detecting time during which the train has been on the rails in the block. The controller includes a distance measurer, a time measurer, a recorder, and a train-length calculator. The distance measurer measures a travelling distance of the train from a beginning of the block, the time measurer measures an elapsed time since the distance measurer starts the measurement, the recorder records the elapsed time and the travelling distance, and the train-length calculator searches the recorder based on the detecting time, and calculates the train length using a selected travelling distance.