Abstract: An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.

Abstract: A stator includes a magnetic plate material that has a main plate surface that is a surface to face a main plate of a movement when assembled to the main plate and that has a rotor accommodating hole formed in a part thereof; and a non-magnetic region that is made non-magnetic by applying chromium on the main plate surface around the rotor accommodating hole and irradiating the chromium with a laser from the main plate surface side.

Abstract: A heating furnace includes a plurality of heat storage coolers capable of introducing a cooling gas into an inside of the furnace and sucking an in-furnace gas; wherein each of the plurality of heat storage coolers includes a gas nozzle in communication with the inside of the furnace; a gas port in communication with an outside of the furnace and connected to a gas piping system that is capable of switching between supplying gas to the heat storage cooler and exhausting gas from the heat storage cooler; a gas passage communicating the gas nozzle with the gas port and having a space for filling a heat storage element; and a heat storage element filled in the space for filling the heat storage element.

Abstract: A high strength copper alloy of excellent bending processability containing Ni: 5-20 wt %, Sn: 0.5-3 wt %, Al: 0.5-5 wt %, Mg: 0.001-0.05 wt %, Cr: 0.001-0.1 wt %, Zn: 0.05-5 wt %, the balance of Cu and inevitable impurities, and having a tensile strength of from 80 to 120 kgf/mm.sup.2. Up to 0.2 wt % of one or more of Fe,Mn,Ti,Zr,P,In,Ta and Co can be added without a deleterious effect. The alloy is non-toxic and economical, as well as shows tensile strength and elongation at least comparable with beryllium-copper alloy and has excellent solderability and solder-resistant and heat resistant peelability. The alloy can be used suitably as materials for electric terminals, connectors, etc.