Backframe for self-contained breathing apparatus

<figref idref="DRAWINGS">FIG. <b>1</b></figref> is a perspective view showing an embodiment of the new design for a backframe for self-contained breathing apparatus;

<figref idref="DRAWINGS">FIG. <b>2</b></figref> is a front view thereof;

<figref idref="DRAWINGS">FIG. <b>3</b></figref> is a rear view thereof;

<figref idref="DRAWINGS">FIG. <b>4</b></figref> is a left side view thereof;

<figref idref="DRAWINGS">FIG. <b>5</b></figref> is a right side view thereof;

<figref idref="DRAWINGS">FIG. <b>6</b></figref> is a top view thereof; and,

<figref idref="DRAWINGS">FIG. <b>7</b></figref> is a bottom view thereof.

The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.