Patents by Inventor Stefanie Wuhrer

Stefanie Wuhrer 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: 10087930
    Abstract: A vane for a vane cell vacuum pump. The vane can be rotated about an axis of rotation by a rotor in a pump chamber and guided in the longitudinal direction in the rotor, with an upper side and a lower side to abut against the bottom and the ceiling of the pump chamber, with a rear side opposite a front side to limit the pressure chambers, with at least one face to slidably abut against an inside wall of the pump chamber on the casing side. The vane comprises a base body of a first plastic material and a vane end molded of a second plastic material to the base body forming the face. The base body comprises a mounting section around which the vane end is formed. The mounting section comprises at least one recess transverse to the front side and/or the rear side.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 2, 2018
    Assignee: Joma-Polytec GmbH
    Inventors: Hans-Peter Ott, Bernd Hess, Stefanie Wuhrer, Martin Thoma, Torsten Helle, Friedhelm Pfitzer
  • Publication number: 20170016443
    Abstract: A vane for a vane cell vacuum pump. The vane can be rotated about an axis of rotation by a rotor in a pump chamber and guided in the longitudinal direction in the rotor, with an upper side and a lower side to abut against the bottom and the ceiling of the pump chamber, with a rear side opposite a front side to limit the pressure chambers, with at least one face to slidably abut against an inside wall of the pump chamber on the casing side. The vane comprises a base body of a first plastic material and a vane end molded of a second plastic material to the base body forming the face. The base body comprises a mounting section around which the vane end is formed. The mounting section comprises at least one recess transverse to the front side and/or the rear side.
    Type: Application
    Filed: July 11, 2016
    Publication date: January 19, 2017
    Inventors: Hans-Peter Ott, Bernd Hess, Stefanie Wuhrer, Martin Thoma, Torsten Helle, Friedhelm Pfitzer