UNDERLYING COMPRESSIBLE LAYER OR PAD (E.G., FLOOR SYSTEMS):
(under the class definition) Structure in which a discrete lamina or a thin flat mat allows for relative movement between two planar surfaces; e.g., a traffic bearing surface and its substructure.
SEE OR SEARCH CLASS
428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product, in the form of a plural layer product, in which one layer is resilient, particularly
455+, for a cork layer and subclasses 492+ for a natural rubber layer.
