A sliding member integrated with a guide pin is inserted into a guide hole of an electrode main body. An elastic ring is integrated with the guide pin under a state in which the guide pin passes through the elastic ring. A portion of the sliding member has a pressurizing end surface configured to press the elastic ring against an inner end surface of the guide hole. When the pressurizing end surface presses the elastic ring against the inner end surface, flow of the cooling air is interrupted. When the elastic ring is away from the inner end surface, the cooling air is allowed to flow.

A method for producing a frame structure contains a hollow member having a curved and long shape, and a plurality of connecting members welded to the hollow member along a longitudinal direction of the hollow member. Each of the connecting members is welded to the hollow member, and a cooling medium is introduced into the inside of the hollow member through an end of the hollow member after the welding. The welding and the introducing are conducted repeatedly in the number of the connecting members.

A system and a corresponding method are provided for interconnecting the batteries in a battery pack in a manner that is designed to simplify the connection process, thereby improving throughput. The system uses two different types of interconnects; wire and ribbon interconnects. The wire interconnects are attached to each battery's large contact area terminal nub while the ribbon interconnects are attached to the crimped edge region of each battery's case.

The present invention relates to a resistance welding system for nut control; the resistance welding system uses a resistance welding method in the process of welding nuts to metal sheets; detects the situations of the parameters are in or out of tolerance values that the parameter can be nut lengths, nut inner diameter differences and acceptability of welding seam riser heights, by makes control them at the welding process and gives warning according to situation; enables automatic control to different types of nuts on a component in processes where multiple nuts are welded onto one component by maintaining a recipeable and sequential welding process via calling registered welding properties for the corresponding nut; it also relates to a resistance welding nut control system that prevents the operator from taking the wrong nut and loading it into the machine.

A method for producing a frame structure contains a hollow member having a curved and long shape, and a plurality of connecting members welded to the hollow member along a longitudinal direction of the hollow member. Each of the connecting members is welded to the hollow member, and a cooling medium is introduced into the inside of the hollow member through an end of the hollow member after the welding. The welding and the introducing are conducted repeatedly in the number of the connecting members.

A blade includes a body having a cutting portion with an edge and a plurality of cutting teeth sequentially aligned along the edge. Each cutting tooth of the plurality of cutting teeth is formed from a corresponding one of a plurality of carbide inserts that is discretely resistance welded to the edge. The body includes at least 15 teeth per inch.