| 摘要 |
A wheelchair, which is suitable for use on a bowling green without causing damage to the surface of the green, has one or more of the following features: (a) a main frame (1) intended to lie in a generally horizontal plane and a plurality of major wheels 76 which support the main frame, the major wheels being mounted inboard of the main frame; (b) mounted rearwardly of the plurality of major wheels, one or more minor, preferably castor wheels (47); (c) each major wheel has a width, as measured in a direction parallel to the axis of rotation of the wheel, of at least 5 inches; and (d) each major wheel has a wide external circumferential contact surface which is devoid of tread. The wheelchair frame has right and left side frames 6, 7 which are downwardly foldable by pivoting and are maintained in an upright position by struts 18, 19 and 23, 24. The major wheels comprise two discs 65, 68 and a flexible elongate track 72; grooves 73, 74 in the track locate the discs and the track can be secured in position around the disc using fastener 75, which is accessible through one of the holes in the discs. A handwheel 71 is provided on the disc 68. The wheelchair is dismantlable and the component parts transported on a castored carriage. <IMAGE> |
