Patent ID: 7520091

Claim:
A retractable roof system comprising: a first elongated track; a second elongated track disposed adjacent to said first elongated track, said second elongated track being spaced apart from said first elongated track; a set of spaced apart beams including a first beam, said retractable roof being adapted so that each beam of said set of beams is arranged in a direction generally in parallel with an adjacently disposed beam and extends generally transversely between said first elongated track to said second elongated track, the set of beams supporting a flexible cover for covering an area below said flexible cover; a pair of trucks for supporting said first beam of said set of beams on said first and second elongated tracks, the pair of trucks including a first truck supporting a first end of said first beam on said first elongated track and a second truck supporting a second end of said first beam on said second elongated track; and a motor for moving said first truck along said first elongated track; wherein said first truck supports said first beam in such manner that said first beam is capable of moving (a) linearly in a direction along said first elongated track; (b) rotationally about an axis extending vertically from said first elongated track; and (c) linearly in a direction of said first beam, and wherein said first truck includes (i) a pin and bearing assembly allowing rotation of said first beam about an axis extending in a direction generally in parallel with said first elongated track; and (ii) a collar channel and bearing assembly receiving said first beam and allowing rotation of said first beam about an axis of said first beam.