The ornamental design for a wheelchair, as shown and which is preferably non-metallic and most preferably made mainly of synthetic resin, in which a chair portion with casters and wheels (motional portions) with armrests are detachably linked by a shaft. The wheels of the invention are removable so that the invention may be pushed smoothly on the casters in the aisles of an aircraft, train, etc., by a caregiver.
FIG. 1 is a perspective view of the wheelchair embodying our new design;
FIG. 2 is a front view of the wheelchair;
FIG. 3 is a left side view of the wheelchair;
FIG. 4 is a top plan view of the wheelchair;
FIG. 5 is a cross-sectional view of FIG. 4 of the wheelchair;
FIG. 6 is an exploded perspective view of the wheelchair; and,
FIG. 7 is an exploded sectional view of FIG. 6 of the wheelchair.