Abstract: FIP vaccines were provided that use an N protein with a specific structure, or a fragment thereof, as an antigen. Preferred antigens of this invention are N proteins derived from a specific type I virus strain (KU-2). Vaccines comprising such an N protein confer preventive effects against a wide range of FIPVs. In addition, the N proteins are very safe because they do not comprise epitopes that enhance infection. Furthermore, preventive effects can be accomplished against type I viruses, which actually cause 70% or more of FIP.

Abstract: A welding jig for holding a motorcycle fuel tank when the fuel tank is welded includes a plurality of attachments for holding said fuel tank through resilient bodies. The plurality of attachments have springs hold the outer plate of a fuel tank, and an inner jig positions an inner plate. The attachments are attached to clamp arms which are opened/closed by cylinders. When the overlap portion between the outer and inner plates is welded, the thermal deformation caused by welding is accommodated by the springs. The attachments are spaced from the fuel tank in the order in which the welding point is approached.

Abstract: A plurality of attachments having springs hold the outer plate of a fuel tank, and an inner jig positions the inner plate. The attachments are attached to clamp arms which are opened/closed by cylinders. When the overlap portion between the outer and inner plates is welded, the thermal deformation caused by welding is accommodated by the springs. The attachments are spaced from the fuel tank in the order in which the welding point is approached.

Abstract: A plurality of attachments having springs hold the outer plate of a fuel tank, and an inner jig positions the inner plate. The attachments are attached to clamp arms which are opened/closed by cylinders. When the overlap portion between the outer and inner plates is welded, the thermal deformation caused by welding is accommodated by the springs. The attachments are spaced from the fuel tank in the order in which the welding point is approached.

Abstract: FIP vaccines were provided that use an N protein with a specific structure, or a fragment thereof, as an antigen. Preferred antigens of this invention are N proteins derived from a specific type I virus strain (KU-2). Vaccines comprising such an N protein confer preventive effects against a wide range of FIPVs. In addition, the N proteins are very safe because they do not comprise epitopes that enhance infection. Furthermore, preventive effects can be accomplished against type I viruses, which actually cause 70% or more of FIP.