Automobile exhaust tube

Acoustics – Sound-modifying means – Muffler – fluid conducting type

Reexamination Certificate

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Reexamination Certificate

active

06267199

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to an exhaust tube, and more particularly to the automobile exhaust tube.
BACKGROUND OF THE INVENTION
An aluminum alloy is more welcome than the other alloy materials in producing the conventional exhaust tube due to its low density and durability. However, as shown in
FIG. 1
, the joint C is melted to create the connection between the outer tube A and the muffler tube B. Such construction is defective in design and not cost-effective.
SUMMARY OF THE INVENTION
The primary objective of the present invention to provide an improved exhaust tube at the rear of an automobile which is free from the shortcomings of the conventional automobile exhaust tube described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by the combination element of a muffler tube and an outer tube. The connection between the muffler tube and the outer tube can be combined without welding. It is therefore the present invention is cost-effective and quickly installed.
The foregoing objective, features and functions of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 2855068 (1958-10-01), Chapel
patent: 3698510 (1972-10-01), Blatt et al.
patent: 3757892 (1973-09-01), Raudman, Jr.
patent: 3794137 (1974-02-01), Teodorescu
patent: 4108275 (1978-08-01), Black et al.
patent: 4113051 (1978-09-01), Moller
patent: 4371054 (1983-02-01), Wirt
patent: 4408679 (1983-10-01), Littrell
patent: 4421202 (1983-12-01), Hoy
patent: 4475623 (1984-10-01), Gerber et al.
patent: 4589515 (1986-05-01), Omura
patent: 4792014 (1988-12-01), Shin-Seng
patent: 4841728 (1989-06-01), Jean et al.
patent: 4932495 (1990-06-01), Chapman

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