Patents by Inventor Didier Chatry

Didier Chatry 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: 9976652
    Abstract: The present invention relates to a sealing device including a sealing circular piece, an inner ring and an outer ring, with one being able to rotate relative to an axis. The circular piece is arranged between the two rings and comprises two circular lips arranged in a groove inclined with respect to the axis of rotation. The groove is provided on the outer face of the inner ring. An attachment profile is fixed in an orifice formed in the outer ring. The inclination of the groove makes it possible to increase the potential contact surface area perpendicular to the axis of rotation of the crown ring, since, for a given distance between an outer edge and an inner edge of a ring, the groove can be longer, improving the resistance of the top lip to expulsion. The two lips are prestressed in the groove allowing for a better hold.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: May 22, 2018
    Assignee: DEFONTAINE
    Inventors: Eric Jacquemont, Jean-Michel Delacou, Didier Chatry
  • Patent number: 9429237
    Abstract: A sealing device comprising a sealing circular piece, an inner ring and an outer ring, one of the two rings being able to rotate relative to an axis, the circular piece being arranged between the two rings and comprising two circular lips arranged in a groove at right angles to the axis of rotation, a top lip and a bottom lip substantially at right angles to the top lip, the bottom lip has a radius of curvature directed towards the interior, the groove being provided on the outer face of the inner ring and a third circular lip pressing on the outer face of the inner ring, and a part is fixed in an orifice formed in the outer ring.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: August 30, 2016
    Assignee: DEFONTAINE
    Inventors: Eric Jacquemont, Jean-Michel Delacou, Didier Chatry
  • Publication number: 20140161619
    Abstract: The present invention relates to a sealing device (1) comprising a sealing circular piece (3), an inner ring (2) and an outer ring (4), one of the two rings being able to rotate relative to an axis, the circular piece (3) being arranged between the two rings (2, 4) and comprising two circular lips (300, 301) arranged in a groove (20) at right angles to the axis of rotation, a top lip (300) and a bottom lip (301) substantially at right angles to the top lip (300), said bottom lip (301) has a radius of curvature directed towards the interior, the groove (20) being provided on the outer face (21) of the inner ring (2) and a third circular lip (302) pressing on the outer face (21) of the inner ring (2), and a part (32) is fixed in an orifice (41) formed in the outer ring (4).
    Type: Application
    Filed: May 24, 2013
    Publication date: June 12, 2014
    Inventors: Eric JACQUEMONT, Jean-Michel Delacou, Didier Chatry
  • Publication number: 20130323061
    Abstract: The present invention relates to a sealing device including a sealing circular piece, an inner ring and an outer ring, with one being able to rotate relative to an axis. The circular piece is arranged between the two rings and comprises two circular lips arranged in a groove inclined with respect to the axis of rotation. The groove is provided on the outer face of the inner ring. An attachment profile is fixed in an orifice formed in the outer ring. The inclination of the groove makes it possible to increase the potential contact surface area perpendicular to the axis of rotation of the crown ring, since, for a given distance between an outer edge and an inner edge of a ring, the groove can be longer, improving the resistance of the top lip to expulsion. The two lips are prestressed in the groove allowing for a better hold.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Applicant: DEFONTAINE
    Inventors: Eric JACQUEMONT, Jean-Michel Delacou, Didier Chatry
  • Publication number: 20050078899
    Abstract: A slewing ring comprises a retainer in metal of a certain hardness substantially equal to the hardness of two rings. The retainer is arranged between the two rings. The retainer is integral in rotation with rolling elements, and holds these elements regularly spaced apart in a raceway. At least one contact ring, made of a material of different hardness than the hardness of the rings and the retainer, is arranged between two members formed by the retainer and by one of the two rings. Each contact ring prevents any direct contact between the two members, is fixed to one of the two members, and is able to come into contact with the other.
    Type: Application
    Filed: August 26, 2004
    Publication date: April 14, 2005
    Inventors: Didier Chatry, Daniel Terve