Patents by Inventor Adolf Juergen Neumann

Adolf Juergen Neumann 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: 9143020
    Abstract: An electric drive motor for a work apparatus includes a stator having two stator poles which are at a distance from one another in the circumferential direction and have respective field windings. The motor has a rotor which rotates between the stator poles and the rotor shaft of the rotor drives a fan wheel. The cooling-air flow generated by the fan wheel enters the stator, flows therethrough and is discharged therefrom. For effective cooling, a pole intermediate space is provided between the stator poles; and, for the cooling-air flow, this space is filled by a non-magnetic guide body to provide a cooling duct delimited by the guide body and the field windings. The guide body is fastened to a support at one stator end and is inserted axially into the stator at the other end thereof.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: September 22, 2015
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Michael Renz, Alexander Haas, Adolf Juergen Neumann, Markus Maier
  • Publication number: 20140028126
    Abstract: An electric drive motor for a work apparatus includes a stator having two stator poles which are at a distance from one another in the circumferential direction and have respective field windings. The motor has a rotor which rotates between the stator poles and the rotor shaft of the rotor drives a fan wheel. The cooling-air flow generated by the fan wheel enters the stator, flows therethrough and is discharged therefrom. For effective cooling, a pole intermediate space is provided between the stator poles; and, for the cooling-air flow, this space is filled by a non-magnetic guide body to provide a cooling duct delimited by the guide body and the field windings. The guide body is fastened to a support at one stator end and is inserted axially into the stator at the other end thereof.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 30, 2014
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Michael Renz, Alexander Haas, Adolf Juergen Neumann, Markus Maier