Abstract: A resistance spot welder includes: a motor, having a shaft; a cylindrical casing; a hollow guide rod, inserted into the casing, and adapted to be moved linearly for moving a first electrode tip facing a second electrode tip provided at a gun arm; a ball nut, fixed in an inner circumference of the guide rod; a ball screw, fitted through the ball nut; a coupling, including a first fastening portion into which the shaft of the motor is inserted and a second fastening portion into which the ball screw is inserted and which is opposite to the first fastening portion; and a bearing, fitted between an outer circumference of the first fastening portion and an inner circumference of the casing. The guide rod is moved between a first point which is a motor side and a second point which is an electrode tip side. When the guide rod is positioned at the first point, the guide rod accommodates at least a part of the second fastening portion.

Abstract: A resistance spot welder including a first plate, a second plate rotatably connected to the first plate through a shaft and driven on the shaft by an actuator, gun arms removably fixed on and electrically insulated with the first and second plates, and electrode tips confronting each other and fixed on the gun arms.

Abstract: A resistance spot welder includes: a first plate; a second plate, rotatably connected to the first plate through a shaft, and driven on the shaft by an actuator; gun arms, removably fixed on and electrically insulated with the first and second plates, respectively, and electrode tips, confronting each other, and fixed on the gun arms, respectively.

Abstract: A resistance spot welder includes: a motor, having a shaft; a cylindrical casing; a hollow guide rod, inserted into the casing, and adapted to be moved linearly for moving a first electrode tip facing a second electrode tip provided at a gun arm; a ball nut, fixed in an inner circumference of the guide rod; a ball screw, fitted through the ball nut; a coupling, including a first fastening portion into which the shaft of the motor is inserted and a second fastening portion into which the ball screw is inserted and which is opposite to the first fastening portion; and a bearing, fitted between an outer circumference of the first fastening portion and an inner circumference of the casing. The guide rod is moved between a first point which is a motor side and a second point which is an electrode tip side. When the guide rod is positioned at the first point, the guide rod accommodates at least a part of the second fastening portion.

Abstract: Each time one of a predetermined n number of authentication ports is accessed by a client terminal, a server checks to see if all of the n number of authentication ports have been accessed. If all of the n number of authentication ports have been accessed, the server determines that it has succeeded in authenticating the client terminal, opens its communications port to the terminal, and gives right of access to the client terminal.

Abstract: A Web server provides the following service when being accessed by a telephone with a browser via the Internet, the server transfers a list of extension groups and the persons in charge belonging to the groups to the telephone. After the desired person in charge is selected from the list on the telephone, the server notifies the telephone of an outside-line telephone number direct-dialing-connectable to the telephone used by the person in charge. The server informs a private branch exchange of information including the telephone number of the telephone and the extension number of the extension telephone used by the person in charge. Thereafter, the private branch exchange, when receiving an incoming call from the telephone, directly calls up the extension telephone with the extension number previously notified by the server.

Abstract: A sound element database is installed in an analog telephone hub. When hold operation or the like is performed on an analog telephone during voice communication, the analog telephone hub selectively reads out necessary sound element data from the sound element database, and sends the sound element data or the type information of the sound element data to an analog telephone on the held party side through a LAN. In an analog telephone hub on the held part side, an audible sound is generated on the basis of sound element data read out from the sound element database on the basis of the sent sound element data or the sound element data type information. This audible sound is supplied to the analog telephone on the held party side to be output. With this operation, an audible sound indicating the operation state of a communication terminal can be effectively transmitted to the communication terminal of the other party.

Abstract: A multimedia information system comprises first and second communication terminal apparatuses for exchanging information data using a common first communication protocol or first and second communication protocols which are different from each other, a first communication network for transmitting information data in accordance with a third communication protocol different from the first and second communication protocols, and first and second communication interface apparatuses for respectively connecting the first and second communication terminal apparatuses to the first communication network, the first communication interface apparatus comprises first conversion means for converting information data in accordance with the first and third communication protocols between the first communication terminal apparatus and the first communication network, and the second communication interface apparatus comprises second conversion means for converting information data in accordance with the second and third commun

Abstract: A private branch exchange comprises trunk circuits, communication highways connected to the trunk circuits for transmitting data of a time-divisional multiplexed channels, and a time switch for switching the communication highways. A communication highway is connected to a computer network via a circuit/packet converter. The computer network comprises branch networks to which the circuit/packet converter is connected, and a root network to which the branch networks are connected through a router/gateway. Each computer terminal has an extension number and IP/port addresses different for such communication functions as audio communication, data communication and the like. The circuit/packet converter has bearer circuits different for each communication function and allocates a specified bearer circuit to each time slot of the communication highway.

Abstract: Each time one of a predetermined n number of authentication ports is accessed by a client terminal, a server checks to see if all of the n number of authentication ports have been accessed. If all of the n number of authentication ports have been accessed, the server determines that it has succeeded in authenticating the client terminal, opens its communications port to the terminal, and gives right of access to the client terminal.

Abstract: A Web server provides the following service when being accessed by a telephone with a browser via the Internet, the server transfers a list of extension groups and the persons in charge belonging to the groups to the telephone. After the desired person in charge is selected from the list on the telephone, the server notifies the telephone of an outside-line telephone number direct-dialing-connectable to the telephone used by the person in charge. The server informs a private branch exchange of information including the telephone number of the telephone and the extension number of the extension telephone used by the person in charge. Thereafter, the private branch exchange, when receiving an incoming call from the telephone, directly calls up the extension telephone with the extension number previously notified by the server.

Abstract: In a communication system, a call setup request is sent from a control unit to a first connection unit and a second connection unit to record the communication channel information of the opposite parties. And, the recorded communication channel information of the second connection unit is sent from the control unit to the first connection unit, and the communication channel information of the first connection unit is sent to the second connection unit. As a result, the first connection unit and the second connection unit are allowed to hold information communication by using their mutual communication channel information.

Abstract: A private branch exchange comprises communication highways for transmitting data of a time-divisional multiplexed channels, and a time switch for switching the communication highways. A communication highway is connected to a computer network via a circuit/packet converter. Each computer terminal in the network has an extension number and Internet Protocol (IP) port addresses that differ for such communication functions as audio communication, data communication and the like. The circuit/packet converter has bearer circuits different for each communication function and allocates a specified bearer circuit to each time slot of the communication highway. When a call is originated, the circuit/packet converter controls the time slot of the communication highway such that a bearer circuit, which is vacant and suitable for a call type, is connected to the computer terminal. The bearer circuit interfaces packet data on the computer network with circuit data on the communication highway.

Abstract: An electronic exchange apparatus where an exchange unit for controlling extension-line and trunk-line interface cards unique to the exchange apparatus is provided separately from a general-purpose central control unit. The exchange unit is connected to the control unit via an Ethernet and control signals are transmitted between them. The exchange unit is allowed to have only the function of converting the communication protocols between the control-channel highway and the Ethernet which are unique to the exchange apparatus. The control unit is designed to have all of the control functions associated with exchange processing. Thus, a software can be developed easily in a short time, helping reduce development costs and keep up with advances in the CPUs and peripherals.

Abstract: An electronic exchange apparatus where an exchange unit for controlling extension-line and trunk-line interface cards unique to the exchange apparatus is provided separately from a general-purpose central control unit. The exchange unit is connected to the control unit via an Ethernet and control signals are transmitted between them. The exchange unit is allowed to have only the function of converting the communication protocols between the control-channel highway and the Ethernet which are unique to the exchange apparatus. The control unit is designed to have all of the control functions associated with exchange processing. Thus, a software can be developed easily in a short time, helping reduce development costs and keep up with advances in the CPUs and peripherals.

Abstract: A host computer system (host) develops an execution load module for a target computer system (target) having no software development environment, using a high-level language. The host and the target are connected to each other via an exclusive communication line through which the host sends the created execution load module to the target. The target has a disk controller CPU as well as a main CPU, the disk controller CPU receiving the execution load module from the host independent of the main CPU, and storing it in a disk device. When the execution module requires correction, this is performed in the host, by use of the high-level language, after which the corrected module is sent to the target.

Abstract: In a temperature measurement device, output signals from a temperature measuring sensor having been stored in a recording element are displayed when a judging element detects that a manipulatable switch is closed. Temperature measurement is begun including displaying the temperature when said judging element detects that the switch is opened after it is closed.

Abstract: An apparatus for horizontally casting concrete comprises a horizontally foldable multilink support arm composed of an attachment frame, a proximal boom, intermediate booms, and a distal boom which are pivotally coupled by joint tubes, a drive mechanism composed of worm wheels mounted on the joint tubes and worm gears mounted on the booms and held in mesh with the worm wheels for enabling the support arm to move in articulatory motion, a concrete pressure-feed pipe extending from a pump along the booms and through the joint tubes with swivel joints, and an attachment jig mounted on the attachment frame for being mounted on a column.