Button for Fastening or Loosening Knots

FIG. 1 is a perspective view of my new design, showing a button for fastening or loosening knots;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view of the button for fastening or loosening knots.

The line shading in FIGS. 1 - 7 represents contour and not surface ornamentation. The broken lines shown in the figures illustrate portions of the button for fastening or loosening knots that form no part of the claimed design.