Patents by Inventor Alexandre Roy

Alexandre Roy 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: 7571614
    Abstract: Turboshaft engine including two subassemblies defining between them an annular chamber housing a seal. The two subassemblies are assembled under axial stress thereby defining an annular chamber housing the seal and an interposed part is inserted between the butting surfaces of the two parts of the annular chamber.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: August 11, 2009
    Assignee: Snecma
    Inventors: Claude Lejars, Marica Mesic, Bruce Pontoizeau, Alexandre Roy, Patrice Suet
  • Publication number: 20050260066
    Abstract: Turboshaft engine comprising two subassemblies defining between them an annular chamber housing a seal. The two subassemblies are assembled under axial stress thereby defining an annular chamber housing the seal and an interposed part is inserted between the butting surfaces of the two parts of the annular chamber.
    Type: Application
    Filed: March 23, 2005
    Publication date: November 24, 2005
    Applicant: SNECMA MOTEURS
    Inventors: Claude Lejars, Marica Mesic, Bruce Pontoizeau, Alexandre Roy, Patrice Suet
  • Patent number: 6908278
    Abstract: An axial compressor for a turbomachine is fitted with a device for centripetally bleeding turbine-cooling air. The compressor includes at least two rings of blades, an outer shroud having holes, and a fixed ring of stator vanes placed in the stream between the moving rings of blades. The holes are inlets for the bleed device, opening out into an annular groove beneath the interstice separating the inner platforms of the stator vanes from the rim of the upstream disk. The groove is fitted with fixed air guide devices to impart a centripetal swirling motion to the air flowing therein in the same direction as the compressor so as to reduce the velocity of the air relative to the rotating holes.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: June 21, 2005
    Assignee: SNECMA Moteurs
    Inventors: Antoine Brunet, Patrick Pasquis, Alexandre Roy
  • Publication number: 20030133787
    Abstract: The invention provides an axial compressor for a turbomachine, the compressor being fitted with a device for centripetally bleeding turbine-cooling air from a stream of air flowing through said compressor, said compressor comprising two rings of moving blades extending radially outwards from the peripheries of two consecutive disks joined together by an outer shroud having holes, and further comprising a fixed ring of stator vanes placed in the stream between said moving rings of blades, said holes serving as air inlets to said bleed device and opening out into an annular groove provided beneath the interstice separating the inner platforms of the stator vanes from the rim of the upstream disk, said groove communicating with said stream via said interstice, wherein the groove is fitted with fixed air guide means imparting centripetal swirling motion on the air flowing in said groove, the motion rotating in the same direction as the compressor so as to reduce the velocity of the air entering into the holes rel
    Type: Application
    Filed: January 16, 2003
    Publication date: July 17, 2003
    Applicant: SNECMA MOTEURS
    Inventors: Antoine Brunet, Patrick Pasquis, Alexandre Roy