Abstract: In an electrical machinery and apparatus, a storage space is formed along an extension direction of a strand, and a temperature sensor is installed in the storage space of the strand, so that temperature of the strand can be immediately measured, and no pressure is applied to the temperature sensor in the process of forming a ground wall insulation thereby the temperature of the strand can be accurately measured.

Abstract: In an electrical machinery and apparatus, a storage space is formed along an extension direction of a strand, and a temperature sensor is installed in the storage space of the strand, so that temperature of the strand can be immediately measured, and no pressure is applied to the temperature sensor in the process of forming a ground wall insulation thereby the temperature of the strand can be accurately measured.

Abstract: A plurality of bridges are interconnected between respective ports thereof in a ring shape to configure a network containing a redundant route. When a bridge has a blocking port, the bridge transmits to the network a blocking advertisement containing information indicating that it has a blocking port and its address. When a bridge does not have a blocking port, the bridge transmits a line failure notification to other bridges having a blocking port when a line failure is sensed. When a bridge has a blocking port and the line failure notification has been received from other bridges, the bridge transmits to the network a blocking release advertisement indicating that the blocking port has been transited to a forwarding state and the blocking state has been released. When a bridge receives a blocking release advertisement packet, the bridge erases a forwarding database thereof.

Abstract: A plurality of bridges containing an own bridge and other bridges are connected to each other between respective ports thereof in a ring shape to configure a network containing a redundant route. When the own bridge has a blocking port, the bridge transmits a blocking advertisement containing its own address indicating that the port of the bridge has been transited to a blocking state, to the network by a broadcast packet. In the case where the own bridge does not have the blocking port, the bridge transmits a line failure notification to the other bridges having a blocking port when a line failure is sensed. When the own bridge has a blocking port and the line failure notification has been received from the other bridges, the bridge transmits a blocking release advertisement which indicates that the blocking port has been transited to a forwarding state and the blocking state has been released, to the network by a broadcast packet.

Abstract: A rectilinear motion apparatus includes two shafts arranged in parallel, a driving motor and a driving pulley coupled to one of the two shafts, an idler pulley coupled to the other of the two shafts, an endless toothed belt arranged between the driving pulley and idler pulley, and a slider disposed between the driving pulley and the idler pulley. The slider includes a first moving pulley and a second moving pulley of a diameter larger than a diameter of the first moving pulley. The first and second moving pulleys are integrally fixed to one another for rotation about the same axis so as to rotate simultaneously. A first pair of guide rollers are disposed on the slider adjacent the first moving pulley to guide a lower run of the toothed belt, and a second pair of guide rollers are disposed on the slider adjacent the second moving pulley to guide an upper run of the toothed belt.

Abstract: A vehicle detecting system for detecting the number of vehicles which pass the roadway, thereby realizing the smooth flow of vehicles. This system comprises: a transmitting coil and a receiving coil which are arranged on both sides of the vehicle detection area set over the roadway; a driving circuit to supply a high frequency exciting current to the transmitting coil; and vehicle detecting circuit to output a vehicle detection signal in response to a change in level or phase of the electrical signal which is induced in the receiving coil. The detection signal is outputted when the signal level exceeds a predetermined value or when the signal phase exceeds a predetermined angle. One or a plurality of pairs of transmitting and receiving coils may be buried under the roadway surface or on above the roadway at regular intervals. With this system, the installing construction of the coils is simplified and the possibility of the occurrence of the accident such as disconnection of the coil is reduced.