The ornamental design for equipment cart, as shown and described.
FIG. 1 is a front-top perspective view of an equipment cart;
FIG. 2 is a front view of the equipment cart;
FIG. 3 is a rear view of the equipment cart;
FIG. 4 is a side view of the equipment cart;
FIG. 5 is another side view of the equipment cart;
FIG. 6 is a top plan view of the equipment cart;
FIG. 7 is a bottom plan view of the equipment cart; and,
FIG. 8 is an enlarged perspective view of a main housing of the equipment cart showing a cover along a top portion of the main housing in an open position.
A bottom surface of the main housing of the equipment cart from which a post extends toward the wheels is substantially flat and forms no part of the claimed design. Broken lines shown in the drawings illustrate environmental structure only and form no part of the claimed design.