Patents by Inventor Olivier Lebigre

Olivier Lebigre 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).

  • Shaft sealing arrangement
    Patent number: 11572952
    Abstract: A shaft sealing arrangement includes a first seal and a second seal, wherein the first seal is designed in the form of a lip seal and the second seal is designed in the form of a mechanical seal. When the shaft is at a standstill, the lip seal performs the sealing action and, when the shaft is rotating, the mechanical seal performs the sealing action.
    Type: Grant
    Filed: May 29, 2021
    Date of Patent: February 7, 2023
    Assignee: Dresser-Rand SAS
    Inventor: Olivier Lebigre
  • SHAFT SEALING ARRANGEMENT
    Publication number: 20220381349
    Abstract: A shaft sealing arrangement includes a first seal and a second seal, wherein the first seal is designed in the form of a lip seal and the second seal is designed in the form of a mechanical seal. When the shaft is at a standstill, the lip seal performs the sealing action and, when the shaft is rotating, the mechanical seal performs the sealing action.
    Type: Application
    Filed: May 29, 2021
    Publication date: December 1, 2022
    Applicant: Dresser-Rand SAS
    Inventor: Olivier Lebigre
  • Bi-directional shaft seal
    Patent number: 10605105
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: March 31, 2020
    Assignee: DRESSER-RAND S.A.
    Inventor: Olivier Lebigre
  • BI-DIRECTIONAL SHAFT SEAL
    Publication number: 20170096905
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Inventor: Olivier Lebigre
  • Bi-directional shaft seal
    Patent number: 9551232
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: January 24, 2017
    Assignee: Dresser-Rand Company
    Inventor: Olivier Lebigre
  • BI-DIRECTIONAL SHAFT SEAL
    Publication number: 20140341733
    Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 20, 2014
    Applicant: DRESSER-RAND SA
    Inventor: Olivier Lebigre