(under the class definition) Structure forming a cover which has a conical surface or formed by three or more generally triangular surface forming members the abutting edges of which form seams or ribs which converge upon a common locus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
68, for a wall extension movable to form a roof in which an extension component is often formed of triangular sections which pivot to form a radially ribbed cone.
80.1+, for a compound curve structure, e.g., dome, and see notes.
90.1+, for another inclined roof or rafter with a substructure.
