Patents by Inventor Vittorino Arnosti

Vittorino Arnosti 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).

  • Apparatus for stretching a synthetic yarn in a stretching bath
    Patent number: 5410787
    Abstract: Stretching apparatus for synthetic filaments is provided with plates (5.1 and 5.2) located in a stretching bath S in spaced apart facing relation to one another to provide a space between which the filaments are drawn along a path. The plates are structured in accordance with the invention (as shown in FIGS. 7 to 16a) so that vibration of the yarn during the passage through the stretching bath is suppressed. At least one of the plates is penetrated by holes which open at the plate surface facing the yarn path.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: May 2, 1995
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Felix Graf, Vittorino Arnosti
  • Drawing roller unit with scavenging means
    Patent number: 5324905
    Abstract: A drawing roller unit is constructed with a godet and an electric motor mounted on a common shaft. A passage is provided throughout the unit to convey a non-flammable scavenging gas through the motor and the godet to reduce the risk of explosion due to sparking by the electric motor and/or other electrical parts of the drawing roller. The gas introduced can leave the unit only through a narrow gap. The pressure of the gas is consequently above atmosphere pressure and prevents the entrance of air.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: June 28, 1994
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Vittorino Arnosti, Rolf Widmer, Konrad Boos, Armin Wirz
  • Drawroll unit
    Patent number: 5159166
    Abstract: The drawroll unit has a heatable galette in which the shaft of the gallette is mounted in bearings which, in turn, are mounted via vibration damping devices in a stationary housing. The vibration damping devices may be in the form of bodies of interlaced wire, O-rings or the like. The vibration damping devices serve to damp vibrations of the shaft in a critical speed range within the normal speed range of the rotor so that the galette can be operated at any speed within the normal speed range.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: October 27, 1992
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Vittorino Arnosti, Konrad Boos, Bruno Gemperle, Felix Graf, Rodolf Leinhard, Emil Munz, Richard Rollin, Rolf Widmer, Armin Wirz