The ornamental design for a wheelchairbrake handle, as shown and described.
FIG. 1 is a perspective view of a wheelchair brake handle showing our new design;
FIG. 2 is a front elevation view of the brake handle, with the rear elevation view being a mirror image of the front.
FIG. 3 is a left side elevation view of the handle.
FIG. 4 is a right side elevation view of the handle.
FIG. 5 is a top plan view of the handle.
FIG. 6 is a bottom plan view of the handle; and,
FIG. 7 is another perspective view thereof shown on a reduced scale and with broken lines used to illustrate environment which form no part of the claim.