Patents by Inventor Robby Lemmens

Robby Lemmens 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).

  • Rod guide and seal system for gas filled shock absorbers
    Patent number: 7011193
    Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston assembly divides the working chamber into an upper working chamber and a lower working chamber. A plurality of extension passages extend through the piston assembly and are opened and closed by an extension valve assembly. A plurality of compression passages extend through the piston assembly and are opened and closed by a compression valve assembly. A rod guide assembly is located between the pressure tube and the piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod. An axially movable piston maintains the pressure within the oil chamber equal to the pressure in the upper working chamber.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: March 14, 2006
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Robby Lemmens, Tom De Maesschalck, Dirk Verdeyen, Peter Boon
  • Rod guide and seal system for gas filled shock absorbers
    Publication number: 20050178627
    Abstract: A gas shock absorber has a pressure tube which defines a working chamber. A piston assembly divides the working chamber into an upper working chamber and a lower working chamber. A plurality of extension passages extend through the piston assembly and are opened and closed by an extension valve assembly. A plurality of compression passages extend through the piston assembly and are opened and closed by a compression valve assembly. A rod guide assembly is located between the pressure tube and the piston rod. The rod guide assembly includes an oil chamber for sealing and lubricating the piston rod. An axially movable piston maintains the pressure within the oil chamber equal to the pressure in the upper working chamber.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 18, 2005
    Inventors: Robby Lemmens, Tom De Maesschalck, Dirk Verdeyen, Peter Boon