Title:
JOINT STRUCTURE OF EXHAUST PIPE AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP2828898
Kind Code:
B2
Abstract:
PURPOSE: To prevent an exhaust pipe from cracking by increasing the strength of a coupling part between an exhaust pipe and a joint flange, and to reduce manufacturing cost by simplifying its manufacture.
CONSTITUTION: A reinforcing pipe 5 is fitted on an exhaust pipe 1, and a B part is expanded into a gradient shape, and a C part is expanded further wider. Since the exhaust pipe 1 and the reinforcing pipe 5 are expanded as they are a double pipe adhering closely each other, even when they become thin in bent parts 7, 8, stress is dispersed, and the bent parts 7, 8 thereby maintain proper strength. The tips of both the pipes are fitted into the inserting hole 2B of a joint flange 2 and fixed by welding.
Inventors:
IZUHARA KOICHI
Application Number:
JP10256194A
Publication Date:
November 25, 1998
Filing Date:
May 17, 1994
Export Citation:
Assignee:
SANGO KK
International Classes:
F01N13/08; F01N13/18; F16L23/024; F16L23/026; F16L23/028; (IPC1-7): F01N7/08; F01N7/18; F16L23/024; F16L23/026; F16L23/028
Domestic Patent References:
| JP55109872A |
Attorney, Agent or Firm:
Hasegawa Yoshimichi
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