A load-carrying trolley 1 for travelling up and down stairs 3 having three wheels 8 on each side of the trolley, the wheels mounted on plates 9 in a triangular formation, and having a means to apply a braking force or a turning force to the wheels on actuation of a movable handle 6. The brakes comprise brake pads acting on a brake disc on the wheel axle 10, attached to the moving handle via two swinging arms 5 and a control rod 7. The brakes are applied to an extent according to the force operated on the movable handle by the operator. The turning or pulling force is applied to the axle via the brake pads and disc when the movable handle is actuated, to cause the wheel plates to rotate and thus assist with the movement of the trolley with lessened effort required from the operator. The stair-climbing trolley also has a fixed handle 4.
Improved stair-climbing trolley
26.07.2017
Patent
Elektronische Ressource
Englisch
IPC: | B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS |