Exhaust manifold

Details Exhaust manifold Exhaust manifold

1989-02-27

1990-05-15

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181240, 291574, 228175, 22826315, B23K 3522

Patent

active

049249673

ABSTRACT:
An exhaust manifold is, which includes a plurality of steel members having the same metallic crystal structure in a range of working temperature, which are jointed with each other by permanent welding and spot welding at different places, wherein material for the spot welding is a material having a different metallic crystal structure than that of the steel members.

REFERENCES:
patent: 4091147 (1978-05-01), Kanazawa et al.
patent: 4517157 (1985-05-01), Coad
patent: 4558202 (1985-12-01), Bagwell et al.
patent: 4658537 (1987-04-01), Bose et al.

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