(under subclass 652) Support for body or part having at least a portion thereof filled with a large number of small particles of particulate solid material that are adapted to flow relative to one another as a fluent material.
(1) Note. The particulate solid material may be sand; spheres of plastic, metal, wood, or ceramic; beans; or other similar materials, usually enclosed in a container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
644, for pillow-type supports with fluent materials.
654, for supports, especially adapted to be seated on, filled with fluent materials.
