I claim the ornamental design for a pool cleaning brush, as shown and described.
FIG. 1 is a front elevational view of the pool cleaning brush showing my new design.
FIG. 2 is a rear elevational view thereof.
FIG. 3 is a left side elevational view thereof.
FIG. 4 is a right side elevational view thereof.
FIG. 5 is a top plan view thereof, the faint broken lines showing environmental association matter being for illustrative purposes only and forming no part of the claimed design; and,
FIG. 6 is a bottom plan view thereof.
The bristles, which are partially shown for ease of illustration, are understood to continue uniformly along the entire bottom surface of the brush head. The cross hatching shown in FIGS. 5 and 6 is understood to represent a conventional mesh material that continues throughout the areas indicated.