Barbell Clamp

FIG. 1 is a front, right and top perspective view of a barbell clamp, showing my new design; FIG. 2 is a rear, left and bottom perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top plan view thereof; FIG. 8 is a bottom plan view thereof; FIG. 9 is an enlarged view of portion 9 of FIG. 1 thereof; and, FIG. 10 is an enlarged view of portion 10 of FIG. 2 thereof. The dashed broken lines shown in the drawings illustrate portions of the barbell clamp that form no part of the claimed design. The dot-dash broken lines depict the boundaries and indicators of the FIG. 9 and FIG. 10 enlargements and form no part of the claimed design.