Patents by Inventor Jean L. Picard

Jean L. Picard 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: 5477536
    Abstract: A method and apparatus for routing packets through a multinode communication network includes a packet format with a sub-field in which a routing list (RL) having entry addresses and exit addresses for ports of nodes, through which the packet must be routed. Each node on receiving a packet, extracts routing information specific to the node and forwards the packet according to the extracted routing information.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 19, 1995
    Inventor: Jean L. Picard
  • Patent number: 5275532
    Abstract: A maintenance-friendly axial compressor includes an outer casing formed by half-shells, an inner casing formed by a plurality of annular members carrying sectors of fixed guide vanes defining the stator stages of the compressor, and an annular housing disposed downstream from the inner casing in the region of the diffuser and capable of receiving the annular member corresponding to the downstream stage of the stator when the member is dismounted from the inner casing. Maintenance is carried out by removing the outer casing and dismounting, stage by stage from the downstream end towards the upstream end of the compressor, the annular members of the inner casing and the fixed guide vanes of the stator, the downstream annular member being pushed back into the annular housing and each subsequently dismounted annular member being temporarily secured to the previously demounted annular member as the maintenance progresses.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: January 4, 1994
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventors: Georges Mazeaud, Jean L. Picard
  • Patent number: 4899539
    Abstract: A flow mixer and flame stabilizer structure for an afterburner of a turbofan engine is disclosed having a variable mixer to mix a portion of the cold flow with the hot flow gasses and which also forms a flame stabilizer for a secondary afterburner fuel injection manifold which injects fuel into the cold flow air during afterburner operation. The device forms a flame stabilizer around the secondary, annular fuel injection manifold and has a generally "U" shaped cross-section. One of the legs forming the "U" shape is fixed, while the opposite leg is movable so as to vary the downstream facing opening between the legs. The movable leg also blocks a portion of the cold flow duct to generate localized increases in pressure upstream of the stabilizer. An air scoop located in this upstream portion communicates with the primary afterburner flame stabilizer to direct pressurized air to cool the primary flame stabilizer.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: February 13, 1990
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation (SNECMA)
    Inventors: Philippe M. D. Gastebois, Alain G. J. Habrard, Jean L. Picard