Fastening system for tonneau covers

A fastening system for use in a flexible tonneau cover system, comprising:

• a side rail;
• a corner member connected at a first end thereof to a second end of the side rail,
• wherein the corner member comprises a connecting tab on the first end thereof, and the side rail comprises an opening in the second end thereof, wherein the connecting tab is inserted in the opening to make the first end of the corner member positioned to adjoin the second end of the side rail,
• a substantially flat elongated slat having a first end along a longitudinal direction, wherein the elongated slat being inserted in a channel formed on a top portion of the side rail;
• a fastening element coupled with a top surface of the elongated slat, the fastening element being disengageably coupled to the flexible tonneau cover system;
• wherein the corner member further comprises a recess portion adjoining the first end thereof, wherein an accommodating groove is formed when the first end of the corner member adjoins the second end of the side rail.

A fastening system for use in a flexible tonneau cover system, comprising:

• a side rail;
• a substantially flat elongated slat having a first end along a longitudinal direction, wherein the elongated slat being inserted in a channel formed on a top portion of the side rail;
• a fastening element coupled with a top surface of the elongated slat, the fastening element being disengageably coupled to the flexible tonneau cover system;
• a reinforce tab coupled with the fastening element, wherein the reinforce tab wraps over the first end of the elongate slat and extends along a bottom surface of the elongated slat.