Patents by Inventor Rudolf Gräfenhahn

Rudolf Gräfenhahn 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).

  • Switching device with arc extinguishing device
    Patent number: 10224162
    Abstract: A single or multiple pole switching device which includes a switch chamber with an arc extinguishing device for each pole, wherein the switch chamber has two lateral walls between which a cage is arranged that is provided for mounting a movable contact bridge, where contacts are arranged on the contact bridge, where the arc extinguishing device has a plurality of quenching plates, the ends of which are accommodated in a pocket arrangement, where the lateral walls have a support for laterally supporting the cage in a direction transverse with respect to the switching direction of the contacts and parallel to the lateral walls, where the pocket arrangement is a separate component from the cage, which pocket arrangement is spaced apart from the cage such that it does not provide such lateral support for the cage, such that a cost-effective and reliable single or multiple pole switching device is provided.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: March 5, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rudolf Graefenhahn
  • Switching Device With Arc Extinguishing Device
    Publication number: 20170309424
    Abstract: A single or multiple pole switching device which includes a switch chamber with an arc extinguishing device for each pole, wherein the switch chamber has two lateral walls between which a cage is arranged that is provided for mounting a movable contact bridge, where contacts are arranged on the contact bridge, where the arc extinguishing device has a plurality of quenching plates, the ends of which are accommodated in a pocket arrangement, where the lateral walls have a support for laterally supporting the cage in a direction transverse with respect to the switching direction of the contacts and parallel to the lateral walls, where the pocket arrangement is a separate component from the cage, which pocket arrangement is spaced apart from the cage such that it does not provide such lateral support for the cage, such that a cost-effective and reliable single or multiple pole switching device is provided.
    Type: Application
    Filed: September 24, 2014
    Publication date: October 26, 2017
    Inventor: Rudolf GRAEFENHAHN
  • Device with axially positionable coil winding
    Patent number: 6300853
    Abstract: An adjusting ring includes a surface which is matched to the pitch of the winding wire. This adjusting ring is used in a device having a coil winding. As such, the coil winding can be positioned in its axial direction.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 9, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Rudolf Gräfenhahn, Georg Kramer