Patent ID: 8181926

Claim:
An assembly, comprising: a channel member; and a clamp configured to clamp a first structure to the channel member, the clamp comprising: a first member comprising side portions and a center portion, the first member including a center opening, a washer including an opening and at least one portion protruding in a downward direction from an upper surface of the washer, a nut having an upper surface, a lower surface and a threaded opening, a threaded bolt disposed through the center opening of the first member, the opening of the washer and the threaded opening of the nut, a spring disposed adjacent a lower portion of the threaded bolt between the center portion of the first member and the washer, and a torsion spring located between the washer and the nut, wherein the torsion spring causes the nut to rotate when force is applied to an upper part of the first member.