Mounting assembly for a truck bed cover

A mounting assembly for use with a truck having a truck bed, said truck bed having first and second side walls, a cab wall, a tailgate, and a truck bedcover, said truck bedcover being mounted on a cover support frame, said support frame having side sections extending adjacent said side walls, and a cab wall section adjacent said cab wall, said mounting assembly comprising:

• at least one hinge bar coupling detachedly fixed on said portion of the support frame extending along the cab wall;
• and
• an adjustable bed frame having:
• first and second L-shaped hinge rails, said hinge rails having an elongated portion that extends along the length of the side walls and a second portion that extends from the side walls along the cab wall;
• at least one lower hinge bar detachedly mounted on the cab wall, said lower hinge bar having upper and lower portions, said upper portion hingedly attaches to said at least one hinge bar coupling, said lower portion including a channel that slidably receives said base portion of the L-shaped hinge rails such that the rails move perpendicularly relative to the sidewalls;
• and
• front and rear clamp assemblies, said front clamp assemblies operate to fasten the elongated portion of the hinge rails to a point on the sidewalls near the cab wall, said second clamp assemblies fasten the elongated portion of the hinge rails to a point on the sidewalls near said tailgate.