The ornamental design for a chairframe, as shown and described.
A chair frame for a low-to-the-ground hunting chair or the like, that can be used as a back pack frame, etc., and that has a movable back member which can be fixed in place by leaning against a tree or the like.
FIG. 1 is a perspective view of a chair frame, showing a preferred embodiment of my new design.
FIG. 2 is a reduced front elevational view of the chair frame of FIG. 1, the rear elevation being a mirror image of the front elevation.
FIG. 3 is a reduced right side elevation of the chair frame of FIG. 1, the left side elevation being a mirror image thereof.
FIG. 4 is a reduced top plan view of the chair frame of FIG. 1; and,
FIG. 5 is a reduced bottom plan view of the chair frame of FIG. 1.
Environmental structure, including portions of webbing, is shown in broken lines in FIG. 1 for illustrative purposes only and forms no part of the claimed design.