Apparatus for transporting thin metal sheets longitudinally with transverse tension
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United States of America Patent
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Mar 7, 1995
Grant Date -
N/A
app pub date -
Nov 18, 1992
filing date -
Nov 18, 1992
priority date (Note) -
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Abstract
A thin strip or flat web of metal material is transported longitudinally in a stable manner and without contact to the working surface by providing a generally constant transverse tension to the web. Equally spaced holes are punched along the outer edges of the web and two oppositely arranged sprockets engage the holes and drive the metal strip without any contact across the width of the strip. The two sprockets are slidably engaged for concurrent rotation with each other and biased outwardly by a spring to provide the constant transverse tension as the web is driven longitudinally.
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