Tube and method for manufacturing the same
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United States of America Patent
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Jan 8, 2013
Grant Date -
Sep 9, 2010
app pub date -
Oct 14, 2008
filing date -
Nov 5, 2007
priority date (Note) -
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Abstract
There is provided a tube having fine irregularities formed on the outer peripheral face or inner peripheral face. The tube has a hollow tube body made of metal with uniform wall thickness of 20 to 50 μm. The tube is obtained by plastic working through spinning, in which a metallic ring-shaped metal original body (6) is rotated together with a rotation support body (3) about the center axis of the metal original body (6), while being pressed by a top or tops (5) disposed on the outer periphery of the metal original body (6). Fine irregularities (12) are formed on the outer peripheral face or the inner peripheral face of the metal tube at a substantially fixed interval. Both ends of the metal original body (6) worked by spinning are cut to yield a tube (11).
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