Patent ID: 6575198
Filing Date: 2003-06-10
Classification: B21C,B23K,F01N,F16L,Y10T

Abstract:
An exhaust pipe of two-passage construction comprising:a central partition plate extending in a diametrical direction and in a longitudinal direction throughout the exhaust pipe; a substantially semicircular peripheral wall on each lateral side of said partition plate so as to extend in the longitudinal direction of said partition plate, said partition plate and each of said peripheral walls being formed by one metallic plate and jointly forming at each of radially outer portions of said partition plate a groove of substantially V shape in cross section having a substantially closed end on a radially inner side and an open end on the radially outer side; and a target elongated along said groove in a manner to extend substantially radially outward from said substantially closed end of said groove, said target being adapted to be integrally welded with the radially inner side of said groove.