Patents by Inventor Cord Lühmann

Cord Lühmann 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).

  • Publication number: 20040041314
    Abstract: The invention relates to an air-spring system (1), which is at least comprised of a cover (2), a roll-off plunger (3) and air-spring bellows (4) that are made of an elastomeric material and that are in most cases provided with an embedded stabilizing support, the two bellows ends being fastened to the cover and to the roll-off plunger, whereby the air-spring bellows enclose a volume-elastic air chamber while forming two loops (7, 8). The first loop (7) is adapted to glide on the outer wall of the roll-off plunger (3) and the second loop (8) communicates with a roll-off section of the cover (2). The inventive air-spring system (1) is further characterized in that the second loop (8) rests on the cover (2) only on two points (11) and rolls off via said points of support (11) when the angle of the air spring bellows (4) is modified by the deflection and the rebound of the roll-off plunger (3).
    Type: Application
    Filed: February 13, 2003
    Publication date: March 4, 2004
    Inventor: Cord Luhmann
  • Patent number: 6536749
    Abstract: A pneumatic suspension, has at least the following components, an air-spring cover, air-spring piston, air-spring bellows in the form of axial bellows or transverse bellows which form a first air-spring loop, a vibration damper and a connection to the chassis. The pneumatic suspension has an articulated component located on the air-spring cover in the vicinity of the air-spring bellows. The component allows pivotal displacements when under pressure and forms a second air-spring loop which extends substantially in a radial direction. It also relates to advantageous variants of the articulated component, both for the axial bellows with an external guide and for the transverse bellows without an external guide. It relates to the use of a supporting bearing with a connection to the axial bellows. The pneumatic suspension is used in particular for the front axle of a motor vehicle.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: March 25, 2003
    Assignee: Phoenix AG
    Inventors: Cord Lühmann, Thorsten Höppner, Oliver Jurk