Patents by Inventor Daniel Bandura

Daniel Bandura 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 sealing an opening and slide valve comprising such a device
    Patent number: 4705259
    Abstract: The invention relates to a device for sealing an opening (7) defined by an edge (6), comprising a sealing element (2, 102), the dimensions of which are at least equal to those of the opening (7), means for securing the said sealing element opposite the opening, and means for ensuring fluid-tightness between the sealing element (2, 102) and the edge (6). The means for ensuring tightness between the sealing element (2, 102) and the edge (6) consists of a flexible membrane (8), means for fixing the circumference of this membrane to the sealing element (2, 102) so as to define a volume (16) between the membrane (8) and the sealing element (2, 102), and a communication hole (18, 32) provided in the sealing element so as to connect the volume (16) to a source of pressurized fluid.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: November 10, 1987
    Assignee: Electricite de France (Service National)
    Inventors: Gerard Dolhen, Claude Oberlin, Jean-Claude Lemarquis, Daniel Bandura