Patents by Inventor Robert Federowsky

Robert Federowsky 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: 5011523
    Abstract: The invention relates to an apparatus and process for the direct production of a composite yarn or ribbon of continuous reinforcement fibers and a thermoplastic organic material. The process includes drawing reinforcement fibers from molten glass, driving or extruding a thermoplastic organic material, converging the paths followed by the reinforcement fibers and the organic material toward one another, and joining the organic material and fibers in at least one composite yarn or ribbon. An apparatus for conducting this process is also disclosed.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: April 30, 1991
    Assignee: Vetrotex Saint Gobain
    Inventors: Giordano Roncato, Robert Federowsky
  • Patent number: 4927445
    Abstract: A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: May 22, 1990
    Assignee: Vetrotex Saint-Gobain
    Inventors: Barbara Soszka, Robert Federowsky, Jacques Mahler
  • Patent number: 4853021
    Abstract: A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating. An apparatus for performing this process comprises a spinneret having a plurality of nozzles or orifices from which fibers of molten glass are discharged; means for drawing a plurality of glass fibers from the spinneret; at least one coating applicator for applying the sizing coating to the glass fibers; guide means for gathering the coated fibers into a yarn; means for imparting a single twist to the coated yarn, such as a strap spindle device and means for curing the sizing coating wherein the coating is crosslinked and/or polymerized.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: August 1, 1989
    Assignee: Vetrotex Saint-Gobain
    Inventors: Barbara Soszka, Robert Federowsky, Jacques Mahler