Patents by Inventor Diego Alves de Oliveira

Diego Alves de Oliveira 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).

  • Damper with hydraulic end stop
    Patent number: 10989268
    Abstract: A damper includes a pressure tube and a piston. The piston defines a rebound chamber and a compression chamber. The damper further includes a piston rod that reciprocates with the piston. The damper includes a sealing ring slidably disposed around the piston rod. The sealing ring includes a locking mechanism adapted to lock the sealing ring around the piston rod. The sealing ring also includes an inner surface having a plurality of concave surfaces and a plurality of convex surfaces. Each of the plurality of concave surfaces is located adjacent to a corresponding convex surface of the plurality of convex surfaces. The sealing ring further includes an upper surface extending between the outer and inner surfaces. The upper surface defines a plurality of channels. The sealing ring further includes grooves and bleeds for tuning energy dissipated by the damper during rebound stroke to help reduction of noise.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: April 27, 2021
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Diego Alves de Oliveira, Nirupam Kar, Matthew Ryan Schelosky, Matthew Roessle
  • DAMPER WITH HYDRAULIC END STOP
    Publication number: 20210010559
    Abstract: A damper includes a pressure tube and a piston. The piston defines a rebound chamber and a compression chamber. The damper further includes a piston rod that reciprocates with the piston. The damper includes a sealing ring slidably disposed around the piston rod. The sealing ring includes a locking mechanism adapted to lock the sealing ring around the piston rod. The sealing ring also includes an inner surface having a plurality of concave surfaces and a plurality of convex surfaces. Each of the plurality of concave surfaces is located adjacent to a corresponding convex surface of the plurality of convex surfaces. The sealing ring further includes an upper surface extending between the outer and inner surfaces. The upper surface defines a plurality of channels. The sealing ring further includes grooves and bleeds for tuning energy dissipated by the damper during rebound stroke to help reduction of noise.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 14, 2021
    Inventors: Diego Alves de Oliveira, Nirupam Kar, Matthew Ryan Schelosky, Matthew Roessle