Patents by Inventor Henri Kummerman

Henri Kummerman 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).

  • Device for operating hatch covers or the like composed of panels
    Patent number: 4193439
    Abstract: An operating device for handling a cover for a hatch of the type composed of at least three successive cover panels hingedly connected to one another comprising first operating means for partially folding the first and second cover panels, and other operating means for folding the third cover panel, constituted by at least one articulated lever located outside the rolling track defined by the coaming rails or bars on which the rollers of the second and third cover panels move.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: March 18, 1980
    Assignee: MacGregor International S.A.
    Inventor: Henri Kummerman
  • Device for retracting or extending a movable access ramp
    Patent number: 4142640
    Abstract: The invention relates to device for retracting and extending a movable, vertically pivoting access ramp comprising at least two successive main sections. At least one intermediate interlinking member is hinged with the main sections of the ramp towards their adjacent ends about a first hinge pin and a second hinge pin, respectively. First operating means are provided for the rotation of one section of the ramp and the intermediate member about the first hinge pin and second operating means are provided for the rotation of the other section of the ramp about the second hinge pin.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: March 6, 1979
    Assignee: MacGregor International S.A.
    Inventor: Henri Kummerman