Openable roof

An openable roof for selectively covering a given area, and having a generally sectorial plan shape forming a central angle of approximately 90.degree.-100.degree. degrees, the roof comprising:

• an inner arcuate support member and an outer arcuate support member, said inner and outer arcuate support members being concentrically disposed relative to each other about a common axis;
• a plurality of moveable roof members, each of the roof members having a generally sectorial plan shape forming a central angle smaller than the central angle of the openable roof, and including
• i) an outer edge portion supported on the outer arcuate support member for movement therealong, and
• ii) an inner edge portion supported on the inner arcuate support member for movement therealong,
• each of the movable roof sections being supported by the inner and outer arcuate support members independent of the others of the movable roof members,
• wherein the moveable roof members are movable over the inner and outer support members between a closed position, in which the roof members extend over and cover the given area, and an open position in which the moveable roof members form a sectorial shaped opening between the support members and over said given area;
• and
• first and second fixed roof members permanently mounted on the inner and outer arcuate support members in fixed positions relative thereto, and wherein the first and second fixed roof members are separated from each other, and each of the first and second fixed roof members has a sectorial plan shape and extends between the inner and outer arcuate support members on a respective radius of the sectorial plan shape of the openable roof.