Patent ID: 7150490

Claim:
A tonneau cover for a truck box comprising: a. a frame having a first rail and a second rail, both rails terminating in padded plastic corners adapted to lay on top of the truck box, to provide a proper installation height for the rails while the rails are being secured to the truck box; b. a tarp having a free end; c. a latch bar attached to said free end; d. a first latch mechanism attached to said first rail and a second latch mechanism attached to said second rail, said first and second latch mechanisms each comprising (i) a block fixed to the rail; (ii) a housing slidably coupled to said block, said housing including structures that releasably secure the latch bar to said housing at an attachment point; and (iii) a mechanism for adjusting the longitudinal position of the attachment point relative to the rail comprising a bolt coupled to the block, an engagement surface associated with said block, and a stop on the housing which cooperates with said engagement surface to define the position of the attachment point and whereby the position of the attachment point can be adjusted by turning the bolt.