.~ Drive surface on single sheet or web wound in plural, completely overlying convolutions
DEFINITION
Classification: 474/259
Drive surface on single sheet or web wound in plural, completely overlying convolutions:
(under subclass 237) Subject matter wherein the drive surface is formed as an integral surface on a thin, flat elongated piece of material, said material being wound or folded upon itself to include at least two complete wraps of the same piece of material about itself, and wherein the second wrap of the material completely covers the first wrap. [figure]
