Device at handtruck
AssigneeBT Industries AB
InventorsRune Johansson, Lars Eriksson, Joakim Gustavsson
Life of this patent
Estimating the term…
Abstract
Tiller truck provided with force transmitter in order to transmit a pumping movement with the tiller to the wheels via a coupling in order to facilitate the movement of the truck. The coupling is arranged so that it can be set for force transfer forward or rearward or in an entirely free position. A control for the control of the coupling is arranged in the tiller handle.
Claims26
Tiller truck provided with lifting hydraulics and a force transfer mechanism and coupling for the transfer of a pumping tiller handle movement to a drive movement for the steering wheels, wherein the coupling includes an inner cylindrical part with a cylindrical surface facing outward with flat axial machinings on the circumference, said machinings having guide rollers arranged therein between an outer cylindrical part with an inward facing cylindrical surface and a roller holder for driving in a first direction to hold the rollers wedged between the machining and the outer cylindrical part for movement in one direction, or transfer for movement in the opposite direction or a neutral free position, said coupling being arranged to have three control positions, one a neutral free coupling position and two opposite directions drive force transferring positions, while movement of the tiller in the opposite direction of a set drive force transferring turning direction allows free movement without force transfer of the tiller so that the wheels can rotate freely in the drive force transferring direction.
Tiller truck provided with a force transfer mechanism and coupling for the transfer of a pumping tiller handle movement to a drive movement for the steering wheels, wherein the coupling is arranged to have three control positions, one a neutral free coupling position and two in opposite directions drive force transferring positions, while movement of the tiller in the opposite direction of a set drive force transferring turning direction allows free movement without force transfer of the tiller so that the wheels can rotate freely in the drive force transferring direction, wherein transfer of movement from a control in the tiller handle to the force transferring part is via two wires.
Tiller truck provided with a force transfer mechanism and coupling for the transfer of a pumping tiller handle movement to a drive movement for the steering wheels, wherein the coupling is arranged to have three control positions, one a neutral free coupling position and two opposite directions drive force transferring positions, while movement of the tiller in the opposite direction of a set drive force transferring turning direction allows free movement without force transfer of the tiller so that the wheels can rotate freely in the drive force transferring direction, wherein control the coupling is by a wire that is pretensioned with one or more springs.
Tiller truck provided with a force mechanism and coupling for the transfer of a pumping tiller handle movement to a drive movement for the steering wheels, wherein the coupling is so arranged to have three control positions, one a neutral free coupling position and two in opposite directions drive force transferring positions, while movement of the tiller in the opposite direction of a set drive force transferring turning direction allows free movement without force transfer of the tiller so that the wheels can rotate freely in the drive force transferring direction, wherein transfer of movement from a control in the tiller handle to the force transferring mechanism is via two wires, and wherein each wire is guided or runs between two curved slide surfaces on a crank and a push-pull-rod respectively, so that at pumping one curved slide surface takes up the wire length that becomes free from the other curved slide surface so that the wire retains its intended operating position corresponding to a control position.
Dependencies are inferred from the claim text.