Floor scrub brush

[0001]FIG. 1 is a front perspective view of a floor scrub brush, showing my new design;

[0002]FIG. 2 is a rear perspective view thereof;

[0003]FIG. 3 is a front view thereof;

[0004]FIG. 4 is a rear view thereof;

[0005]FIG. 5 is a left side view thereof;

[0006]FIG. 6 is a right side view thereof;

[0007]FIG. 7 is a top view thereof;

[0008]FIG. 8 is a bottom view thereof; and,

[0009]FIG. 9 is an enlarged detail view of area 9 in FIG. 1.

[0010]The dash-dash broken lines in the drawings depict portions of the floor scrub brush that form no part of the claimed design.

[0011]The dot-dash broken lines depict the bounds of the enlarged area that form no part of the claimed design.