The ornamental design for an belttailkeeper, as shown and described.
FIG. 1 is an exploded perspective front view of an belt tail keeper, according to the present invention.
FIG. 2 is a perspective front view of the belt tail keeper of FIG. 1.
FIG. 3 is an exploded front view of the belt tail keeper of FIG. 1.
FIG. 4 is an exploded back view of the belt tail keeper of FIG. 1.
FIG. 5 is an exploded left view of the belt tail keeper of FIG. 1.
FIG. 6 is an exploded right view of the belt tail keeper of FIG. 1.
FIG. 7 is an exploded top view of the belt tail keeper of FIG. 1.
FIG. 8 is an exploded bottom view of the belt tail keeper of FIG. 1.
FIG. 9 is a top perspective view of the belt tail keeper of FIG. 1, shown in an open position. The belt drawn in phantom depicts an environmental structure which forms no part of the claimed design; and,
FIG. 10 is a top perspective view of the belt tail keeper of FIG. 1, shown in a closed position. The belt drawn in phantom depicts an environmental structure which forms no part of the claimed design.