Patents by Inventor Arno Keller

Arno Keller 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).

  • Gas spring
    Patent number: 7073642
    Abstract: A gas spring comprises a cylindrical casing, in which a piston rod is guided for displacement concentric of a central longitudinal axis. A damping piston is mounted on the piston rod, dividing the interior of the casing into two sectional casing chambers. A filling of compressed gas is provided inside the casing. A damping device is provided for velocity-dependent damping of a motion of stroke of the damping piston and another damping device is provided for path-dependent damping of a motion of stroke of the damping piston. The result is a gas spring of excellently controllable stroke behaviour.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: July 11, 2006
    Assignee: Suspa Holding GmbH
    Inventors: Arno Keller, Bertram Heydenreich, Andreas Krog
  • Gas spring
    Publication number: 20050045438
    Abstract: A gas spring comprises a cylindrical casing, in which a piston rod is guided for displacement concentric of a central longitudinal axis. A damping piston is mounted on the piston rod, dividing the interior of the casing into two sectional casing chambers. A filling of compressed gas is provided inside the casing. A damping device is provided for velocity-dependent damping of a motion of stroke of the damping piston and another damping device is provided for path-dependent damping of a motion of stroke of the damping piston. The result is a gas spring of excellently controllable stroke behaviour.
    Type: Application
    Filed: August 20, 2004
    Publication date: March 3, 2005
    Applicant: SUSPA Holding GmbH
    Inventors: Arno Keller, Bertram Heydenreich, Andreas Krog