Patents by Inventor Pascal Gérard Gervais

Pascal Gérard Gervais 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: 9316113
    Abstract: A bushing for a variable set blade includes a cylindrical part configured to receive the blade, the root of the blade being able to rotate in the cylindrical part, and a base including: a first side able to be put in contact with a first edge of a circumferential groove of the ring, and/or a second side able to be put in contact with a second edge of the circumferential groove of the ring. At least one of the first side or second side of the base includes at least one bevel through which the first side or the second side is able to be put in contact with one of the first edge or second edge of the circumferential groove so as to block the bushing in rotation. The invention finds a particularly interesting application in the field of aircraft.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: April 19, 2016
    Assignee: SNECMA
    Inventors: Pascal Gérard Gervais, Claude Robert Louis Lejars
  • Publication number: 20120063905
    Abstract: A bushing for a variable set blade includes a cylindrical part configured to receive the blade, the root of the blade being able to rotate in the cylindrical part, and a base including: a first side able to be put in contact with a first edge of a circumferential groove of the ring, and/or a second side able to be put in contact with a second edge of the circumferential groove of the ring. At least one of the first side or second side of the base includes at least one bevel through which the first side or the second side is able to be put in contact with one of the first edge or second edge of the circumferential groove so as to block the bushing in rotation. The invention finds a particularly interesting application in the field of aircraft.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Applicant: SNECMA
    Inventors: Pascal Gérard Gervais, Claude Robert Louis Lejars
  • Patent number: 6938407
    Abstract: This object is achieved by the bleed-off means comprising means for tapping air from the primary duct which are arranged upstream of the intermediate casing and means for evacuating the air tapped into the secondary duct downstream of the support arms, these means comprising conduits arranged around the intermediate casing under the platforms.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 6, 2005
    Assignee: SNECMA-Moteurs
    Inventors: Bruno Beutin, Michel Gilbert Roland Brault, Pascal Gérard Gervais, Monique Andrée Thore
  • Publication number: 20030079465
    Abstract: The invention relates to a bypass turbojet comprising a primary duct, a secondary duct, a low-pressure compressor, a high-pressure compressor, and a structural intermediate casing arranged axially between said low-pressure compressor and said high-pressure compressor, said intermediate casing being equipped at its periphery with a plurality of support arms having platforms which internally delimit the secondary duct, in which bleed-off means are provided, allowing some of the gaseous stream delivered by the low-pressure compressor to be tapped off and led to the secondary duct. Said bleed-off means comprise means for tapping air from said primary duct which are arranged upstream of said intermediate casing and means for removing the air tapped from said secondary duct downstream of said support arms, these means comprising conduits arranged around said intermediate casing under said platforms.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 1, 2003
    Applicant: SNECMA MOTEURS
    Inventors: Bruno Beutin, Michel Gilbert Roland Brault, Pascal Gerard Gervais, Monique Andree Thore
  • Patent number: 6390771
    Abstract: A stator suitable for high-pressure compressors in gas turbine engines includes two points of ventilation at different temperatures. It is recommended that the upstream section of the stator be constructed with a casing and a shroud, both of which are unbroken around a circumference and made of a material with a low degree of thermal expansion. Downstream the shroud is, however, constructed using angular sectors in a material with a higher degree of thermal expansion.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: May 21, 2002
    Assignee: Snecma Moteurs
    Inventors: Pascal Gérard Gervais, Pascal Michel Daniel Lejeune, Carmen Miraucourt, Jacky Serge Naudet, Patrice Suet, Monique Andrée Thore