Abstract: A power amplifier circuit includes a first amplifier, a second amplifier, a third amplifier, and a harmonic suppression circuit. The first amplifier operates on power supplied through a first supply line, and amplifies a first transmit signal in a first frequency band. The second amplifier operates on power supplied through a second supply line connected to the first supply line, and amplifies a second transmit signal in a second frequency band different from the first frequency band. The third amplifier shares an antenna with the second amplifier, and amplifies a receive signal in the second frequency band received from the antenna. The harmonic suppression circuit generates, based on a harmonic of the first transmit signal, a suppression signal to suppress the harmonic to be transferred to the first supply line, and outputs the suppression signal to the first supply line or the second supply line.

Abstract: An example of a piping structure of a tire vulcanizer to which the present invention is applied has a central mechanism 1 of the tire vulcanizer as illustrated in FIG. 1. The central mechanism 1 has a bug head 2, a hydraulic cylinder 3, and exhaust circulation path pipes 4. In addition, the central mechanism 1 has a bladder (not illustrated) which may be expanded and contracted as a vulcanizing medium is supplied into the bladder. One end of the exhaust circulation path pipe 4 is connected to an interior of the bladder, and the two exhaust circulation path pipes 4 are connected to each other through a bypass pipe 5. The other end of the exhaust circulation path pipe 4 is connected to an exterior of the central mechanism 1.

Abstract: An example of a piping structure of a tire vulcanizer to which the present invention is applied has a central mechanism 1 of the tire vulcanizer as illustrated in FIG. 1. The central mechanism 1 has a bug head 2, a hydraulic cylinder 3, and exhaust circulation path pipes 4. In addition, the central mechanism 1 has a bladder (not illustrated) which may be expanded and contracted as a vulcanizing medium is supplied into the bladder. One end of the exhaust circulation path pipe 4 is connected to an interior of the bladder, and the two exhaust circulation path pipes 4 are connected to each other through a bypass pipe 5. The other end of the exhaust circulation path pipe 4 is connected to an exterior of the central mechanism 1.

Abstract: A fluid feeder which is capable of removing foreign matter on the surface of a rotor is provided. The fluid feeder is provided with a rotor housing body on which a rotor housing chamber for housing a rotor of a canned electric motor is installed and a pump casing in which a fluid feeding chamber hermetically installed so as to be connected consecutively to the rotor housing chamber is installed and an impeller is housed inside the fluid feeding chamber. Further, a hollow pipe body is used to connect the vicinity of a side face of the fluid feeding chamber with an upper end of the rotor housing chamber.

Abstract: The invention aims to provide a vulcanized tire cooling apparatus configured to blow cooling air to a vulcanized tire in rotation, thereby achieving uniform cooling of the vulcanized tire and shortening of cooling time as well as preventing the vulcanized tire from being deformed due to centrifugal force. It includes a blower unit (4) set to blow air in a direction to the outer circumferential surface of a vulcanized tire (1) and a tire rotator (6) rotating the vulcanized tire supported with an upper rim (2) and a lower rim (3) in a circumferential direction. The apparatus is configured to cool down the vulcanized tire by blowing air to the outer circumferential surface thereof by the blower unit while the tire is rotated in the circumferential direction by the tire rotator.

Abstract: The generator has a driving section provided with an impeller received in a casing, which is formed so as to allow the fluid at high-temperature and under high-pressure to flow in an inlet and to allow the fluid to flow out of an outlet, and adapted to rotate the impeller by the flow pressure of fluid, a power generating section consisting of a rotor and a stator coil, and a driving shaft having one end for fixing the impeller and the other end for fixing the rotor. Electric power is generated at the power generating section by rotating the rotor by the impeller through the driving shaft. The generator is further provided with a partition wall for hermetically partitioning the rotor and the stator coil with the rotor contained in a rotor containing chamber formed therein.