Patents by Inventor Antti Risti

Antti Risti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for moving an exchangeable platform or a container on to and off of a tipping frame of a lorry, trailer, or the like
    Patent number: 4058231
    Abstract: Method and apparatus for unloading a platform from a lorry having a tipping frame, the tipping frame having an endless belt or chain which in turn has an elongated chain connected thereto. The chain has hook and wedge member thereon adapted to connect to pull bars on the platform to lift the platform onto the lorry. For lowering, a counter element is provided on the endless belt or chain for pushing the platform off the lorry.
    Type: Grant
    Filed: August 21, 1975
    Date of Patent: November 15, 1977
    Assignee: Autolava Oy
    Inventors: Heikki Visa, Ossi Rantala, Antti Risti