Patents by Inventor Leonard Hupkes

Leonard Hupkes 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).

  • Patent number: 4076127
    Abstract: A device for raising and lowering a load while preventing swinging of the load comprising a container bridge having a displaceable trolley thereon, the trolley carrying a drum for hoisting cables which pass over sheaves to the load for raising and lowering the load by wind-up and pay-out of the cables. In order to prevent swinging of the load, a positioning wire extends from a drum on the trolley to the load at an oblique inclination which forms an angle with respect to the hoisting cables.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: February 28, 1978
    Assignee: Conrad-Stork B.V.
    Inventor: Leonard Hupkes
  • Patent number: 4018349
    Abstract: A container loading and unloading device is described wherein containers are raised along a substantially vertical path, thereafter displaced along a horizontal path and finally lowered along a vertical path. The device comprises at least one horizontal girder supported by a frame; at least two hoists disposed for raising and lowering of the containers, the hoists being supported by and movable over the girder and operatively positioned a distance from each other; and at least one substantially horizontally extending continuous conveyor for the horizontal displacement of the containers. Such conveyor is situated between the hoists and includes a support for at least one container and means for displacing such support and container placed thereon along a horizontal path from a point near one hoist to a point near the other.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: April 19, 1977
    Assignee: Conrad-Stork B.V.
    Inventor: Leonard Hupkes