Patents by Inventor Rolf Hengstenberg

Rolf Hengstenberg 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).

  • Patent number: 7392978
    Abstract: A wheel suspension comprising a vehicle body, a wheel movably articulated on the vehicle body via a control arm assembly. A wheel carrier and at least one helical pressure spring which is supported on the vehicle body on the one hand and on the wheel carrier or the control arm assembly on the other hand. The spring stiffness of the vehicle body support referred to the wheel contact point of the wheel can be controlled so as to be variable. Use is made of a helical pressure spring assembly whose force action line deviates from the geometric spring center line. Furthermore, there are provided rotational means for the 3-dimensional adjustment of the force action line relative to the geometric spring center line.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: July 1, 2008
    Assignee: Muhr und Bender KG
    Inventors: Andreas Carlitz, Jörg Neubrand, Rolf Hengstenberg
  • Publication number: 20060131799
    Abstract: A wheel suspension comprising a vehicle body, a wheel movably articulated on the vehicle body via a control arm assembly. A wheel carrier and at least one helical pressure spring which is supported on the vehicle body on the one hand and on the wheel carrier or the control arm assembly on the other hand. The spring stiffness of the vehicle body support referred to the wheel contact point of the wheel can be controlled so as to be variable. Use is made of a helical pressure spring assembly whose force action line deviates from the geometric spring center line. Furthermore, there are provided rotational means for the 3-dimensional adjustment of the force action line relative to the geometric spring center line.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 22, 2006
    Inventors: Andreas Carlitz, Jorg Neubrand, Rolf Hengstenberg
  • Patent number: 6406211
    Abstract: A connecting device has an attachment head and a clamping device for connecting horizontal or diagonal scaffolding elements to perforated disks of vertical post elements. The attachment head has a bearing surface on one side by which it is supported on the pipe of the post element. On the same side a horizontal slit is present, corresponding at least to the thickness of the perforated disks. The slit divides the bearing surface into two sub-surfaces. A feature is provided on the side opposite the bearing surface for welding on a pipe. The overall height of the attachment head on the side by which feature the attachment head is supported on the pipe is at least 68 millimeters. The top surface and the bottom surface of the attachment head taper continuously from the bearing surface to the feature for welding on the pipe.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: June 18, 2002
    Assignee: Plettac AG
    Inventors: Rolf Hengstenberg, Ute Tilsch, Holger Schadwinkel