The ornamental design for a chairframe, as shown and described.
FIG. 1 is an upper perspective view of the chair frame showing my design.
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is an opposite side view thereof;
FIG. 6 is top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another upper perspective view of a second embodiment, the difference being a matter of length; and,
FIG. 9 is another upper perspective view thereof, showing attachment to a seat back and seat panel in broken lines.
The chair is a piece of furniture for sitting. The embodiments have the same design features, the differences between embodiments being a matter of length. The elements shown in broken lines are presented for illustrative purposes only and form no part of the claimed design.