Patents Assigned to De Ark B.V.
  • Patent number: 4880341
    Abstract: A swivel platform for a rail vehicle is disclosed. The swivel platform is intended for loading a container from a road vehicle onto the rail vehicle and vice versa. The swivel platform comprises a bottom frame which must be fixed to the rail vehicle and a top frame which can swing relative to the bottom frame through an angle of about 45 degrees with respect to the longitudinal axis of the rail vehicle. The top frame is provided with two parallel container guide elements which are connected to each other by means of transverse elements, one of which is provided with a wheel or roller which during the swing movement runs over part of the rail vehicle or over part of the bottom frame. Furthermore each of the parallel container guide elements is also provided with a wheel or roller which during the swing movement runs over part of the rail vehicle or over part of the bottom frame.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: November 14, 1989
    Assignee: De Ark B.V.
    Inventor: Aart A. Van Den Pol
  • Patent number: 4737063
    Abstract: Apparatus for loading and unloading an exchangeable platform, container or the like onto and off a tipping frame of a vehicle, the rearward end of said tipping frame being connected through a shaft to the vehicle frame and said tipping frame being tiltable in relation to the vehicle frame by at least one cylinder/piston combination. The tipping frame comprises an endless chain arranged to run around a motor driven chain wheel at one end of the tipping frame and a chain wheel of otherwise embodied wheel at the other end of the tipping frame, whereby a separate auxiliary tail is connected with one end thereof to the endless chain and with the other end thereof to a hook-shaped engaging member designed to become engaged to the platform, container or the like.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: April 12, 1988
    Assignee: De Ark B.V.
    Inventor: Aart A. van den Pol