Retractable hangar

Claim 1

A RETRACTABLE HANGAR OF SUBSTANTIALLY INVERTED USHAPED CROSS-SECTION, COMPRISING A FIXED SECTION AND A PLURALITY OF MOVABLE SECTIONS, SAID MOVABLE SECTIONS HAVING WHEELS ROTATABLY MOUNTED AT THE LOWER EDGES THEREOF, SAID FIXED SECTION ADAPTED TO BE ANCHORED TO A FIRM BASE, A PLURALITY OF TRACKS FIXABLE TO SAID FIRM BASE AND EXTENDING FROM OEN END OF EACH SIDE OF THE FIXED SECTION, EACH OF SAID TRACKS FORMED OF A PAIR OF I-SHAPED MEMBERS EXTENDING PARALLEL TO EACH OTHER IN HORIZONTAL DIRECTION AND BEING CLOSELY SPACED TO FORM A GROOVE IN WHICH THE WHEELS ON THE MOVABLE SECTIONS RIDE WHEREBY SAID WHEELS CANNOT BE LIFTED OFF SAID TRAKCS, SAID MOVABLE SECTIONS TELESCOPED ONE WITH RESPECT TO THE OTHER AND TO THE FIXED SECTION AND MOVABLE ALONG THE TRACKS FROM A RETRACTED TELESCOPED POSITION TO AN EXTENDED POSITION, EACH OF SAID U-SHAPED SECTIONS COMPRISING STRUCTURAL MEMBERS OF U-SHAPED CONFIGURATION INTERCONNECTED BY BRACING MEMBERS AND COVERED BY WATERPROOF MATERIAL, SAID STRUCTURAL MEMBERS COMPRISING TUBULAR MEMBERS, STOPS MOUNTED ON THE TUBULAR MEMBERS OF ADJACENT SECTIONS FOR LIMITING INWARD AND OUTWARD MOVEMENT OF ADJACENT SECTIONS RELATIVE TO EACH OTHER, MEANS FOR MOVING THE MOVABLE SECTIONS FROM THE RETRACTED POSITION TO THE EXTENDED POSITION AND FROM THE EXTENDED POSITION TO THE RECTRACTED POSITION, SEALING MEANS TO CLOSE THE GAPS BETWEEN THE SECTIONS, THE OUTER END OF THE OUTERMOST SECTION HAVING AN OPENING EXTENDING SUBSTANTIALLY THE ENTIRE AREA THEREOF, AND A CLOSURE MEMBER FOR SAID OPENING.