Method of manufacturing filter pipe for vehicle and filter pipe for vehicle
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United States of America Patent
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Nov 28, 2017
Issued Date -
N/A
app pub date -
Sep 29, 2015
filing date -
Sep 30, 2014
priority date (Note) -
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Abstract
A method of manufacturing a filter pipe for vehicles which has an expanded tube portion with a different diameter at one side and is provided with a plurality of through holes formed along a circumferential direction includes: forming the plurality of through holes in a mother member; forming furrows at one end portion of the mother member; forming a planar member having the plurality of through holes and the furrows by a shearing process of the mother member; bending the planar member in a tubular shape and spreading the furrows to form an area where the furrows are formed in an expanded tube shape; and adhering both facing end portions of the planar member so as to form a body having the expanded tube portion at one side thereof.
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