Patents by Inventor Erwin Lahoda

Erwin Lahoda 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: 4616464
    Abstract: A composite structural element comprises a steel structural shape whose web is provided with one or more steel plates secured thereto by welding or bolting and embedded in the concrete filling the channels between its flanges. The concrete may also include a reinforcement secured to the plate. With a relatively simple structure the system has increased load-carrying capacity even under fire conditions.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: October 14, 1986
    Assignee: Arbed S.A.
    Inventors: Jean-Baptiste Schleich, Erwin Lahoda, Jean-Paul Lickes
  • Patent number: 4571913
    Abstract: A composite structural element has a main steel beam having a web and at least two flanges extending therefrom, having oppositely directed outer faces, having outer edges generally defining a plane and defining with the web a recess open away from the web between the outer edges. A mass of concrete fills the recess substantially to the plane, the outer flange faces being exposed and substantially free of concrete. Another profiled steel beam is fixed to the web of the main beam and wholly imbedded in and covered by the concrete mass. Typically the main beam is an H- or I-beam and has two such channels provided with such other beams and filled with respective such masses. The other beams can be of T-section or each other beam can be an I- or H-beam. In addition it is possible to provide longitudinally extending steel reinforcing bars imbedded in the concrete mass. Steel fibers can also be imbedded as reinforcement in the concrete mass, and this mass can be at least partially of colloid concrete.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: February 25, 1986
    Assignee: Arbed S.A.
    Inventors: Jean-Baptiste Schleich, Erwin Lahoda, Jean-Paul Lickes, Emile Reuter