Patent ID: 6371070
Filing Date: 2002-04-16
Classification: B29C,B29K,B29L,F02M,F05C,F16L,Y10T

Abstract:
A method of connecting an end of a branch pipe of an intake manifold to another member of the intake manifold, the branch pipe and said another member being made of a hard thermoplastic synthetic resin, the method comprising the steps of:providing the end of the branch pipe with a flat end surface which is generally perpendicular to an axis of the end of the branch pipe; providing said another member with a connecting surface for fixing the flat end surface; forming a ring-shaped protrusion on at least one of the flat end surface and the connecting surface; arranging a heating wire around the ring-shaped protrusion; causing the flat end surface and the connecting surface to be pressed against each other; and applying a voltage across the heating wire.