Telescoping type cover for truck beds and the like

An enclosure assembly for an area comprising:

• track means having a channel formed therein and positioned at spaced apart parallel boundaries of said area and extending the length thereof, a plurality of rigid cover sections including at least forwardmost and rearwardmost most sections extending between said track means and at least one of said covers sections having interengaging means corresponding to said channels for slidable reception in said track means, said cover sections being extandable to substantially enclose said area and collapsible so as to leave said area at least partially open, said forwardmost cover being interconnected to said rearwardmost cover section by actuation means which operates to move at least one of said cover sections to collapsed or extended positions and allows selectively positioning of at least one of said cover sections at any variable location between extended and collapsed positions, said actuation means having a power train including drive means consisting of bevel gears being placed in said power train, said bevel gears are driven by a manually operated hand crank, wherein said area is a bed portion of a vehicle having upstanding spaced apart longitudinal side walls and a tailgate portion extending between said side walls to enclose said area at the rear end thereof, said track means are secured are secured to each of said spaced apart walls and said plurality of cover sections extend over said area to selectively enclose the same.