Patent ID: 6386552
Filing Date: 2002-05-14
Classification: B62B

Abstract:
A sack trolley comprising(a) a support frame extending in a longitudinal direction and having an upper end and a lower end, (b) hand grip means at the upper end of the support frame, (c) a pair of carrying wheels at the lower end of the support frame, the carrying wheels being rotatable about axes extending transversely to the longitudinal direction, and (d) a hoist mechanism mounted on the support frame between the carrying wheels for climbing steps, the hoist mechanism comprising (1) a lifting arm having one end comprised of a swing guide component which may be swivelled about a swivel axis extending parallel to the axes of the carrying wheels and a support component at a free end opposite to the swing guide component, the support bracket component being longitudinally displaceable relative to the swing guide component and comprising a pair of legs and a support portion extending between the legs transversely to the longitudinal direction, (2) support rollers on the support bracket component, and (3) a crank drive comprising two crank arms linked to the legs of the support bracket component and having a crank axis arranged above the swivel axis of the swing guide component.