| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has two identical ball halves rotatable relative to a member placed between them and having supporting prop. The member is fixed on axle having its ends mounted in bearings built-in into each of the ball halves. The axle is manufactured as double-armed lever turned with its convex part or sharp bend upward. The convex part or sharp bend matches supporting prop orientation so that curvature radius or axis break in the highest point makes maximum gap (not less than corresponding member and supporting prop size) in the highest point of the wheel and makes maximum gap (allowing relative rotation of the ball halves) in the lowest point of the wheel. ^ EFFECT: improved wheelchair usability features. ^ 2 cl, 1 dwg |
