Patents Assigned to ABG-SEMCA S.A.
  • Patent number: 5032028
    Abstract: The invention relates to a fluid film bearing and to a process for its production.The invention relates to a hydrodynamic fluid film bearing formed between a plurality of sheets (3) fixed to a casing (5) and a shaft (6) in rotation with respect to said casing. The invention has as an object to completely dissociate the control of the radial rigidity of the bearing in the startup phase and that in the rotational phase at working speed.A low rigidity, negligible or zero of the sheets (3) permits limiting the application forces of the sheets against the shaft and thus to reduce the wear upon startup of the bearing. After startup, the rotation of the shaft (6) at the interior of the sheet (3) causes a displacement of the sheets (3) which separate from the shaft (6) by the interposition of a hydrodynamic film of air. The new position occupied by the sheets (3) causes a return of the force of the sheets (3) by the restraining elements (4), as for example of leaf springs (40, 41, 42 or 43).
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: July 16, 1991
    Assignee: ABG Semca S.A.
    Inventors: Serge Riazuelo, Andre Jambou, Francois Thomas, Christian Malabre
  • Patent number: 4246759
    Abstract: A method and apparatus for conditioning air in an enclosure wherein the air is passed through a heat exchanger where the air is heated or cooled by a primary gas in the heat exchanger; the primary gas flows through a conditioning power circuit wherein the primary gas is compressed thereby heating the same; the compressed primary gas is then either passed through the heat exchanger to heat the air or is further compressed, cooled and allowed to expand to cool the primary gas which then passes through the heat exchanger to cool the air.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: January 27, 1981
    Assignee: ABG-Semca S.A.
    Inventor: Jacques Signoret
  • Patent number: 4142408
    Abstract: An apparatus is disclosed for measuring axial thrust of a rotating, bearing supported machine shaft. The support bearings are operatively coupled through a shiftable crosspiece to a spring leaf upon which is mounted a variable resistance type strain gauge connected to an extensometric bridge circuit which provides an output indication of the axial thrust.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: March 6, 1979
    Assignee: ABG-SEMCA S.A.
    Inventor: Serge Riazuelo