NASA NTRS · 19690000137
Helical tape forming device
Abstract
Using a device that is not limited to a minimum thickness or width-to-thickness ratio, a very thin metal tape or ribbon is formed into a continuous flat wound helical coil. The device imparts the desired circular shape by squeeze rolling it with an unequal force across its width.
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Bush, J. E., Cole, P. T.. 1969-05-01. Helical tape forming device. https://ntrs.nasa.gov/citations/19690000137
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