Patent ID: 8978795
Filing Date: 2015-03-17
Classification: A61G,B60K,B62B,B62D

Abstract:
1. An auxiliary roller having a rigid frame, with a drivable wheel which is mounted in the frame and which has an axle, the wheel together with the frame, by pivoting, being raisable or lowerable relative to a chassis to which the auxiliary roller is to be attached, via a mounting plate being part of the auxiliary roller, and a compression spring which is rotatably linkable at one end to the chassis via the mounting plate, the compression spring being provided in order to load the wheel with regard to ground contact in the lowered position, wherein a transverse connection connecting two frame parts in the direction of the axle of the wheel is provided, wherein the two frame parts surround the wheel and extend longitudinally along the auxiliary roller, wherein the compression spring is directly connected at the other end to the transverse connection, and wherein the compression spring together with the two frame parts pivots about a pivot point which is fixed relative to the chassis, when the wheel is raised and lowered.