Patents by Inventor Wilhelm Gertz

Wilhelm Gertz 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).

  • External-rotor type drum motor
    Patent number: 4121127
    Abstract: An external-rotor type drum motor in which the rotor includes axially extending members to which are fastened the respective end bells of the motor. The motor is further provided with a drum cylinder which surrounds the rotor and the end bells and is secured axially by means of a ring which is bolted to one of the end bells and rests against an inner shoulder formed on the drum cylinder.
    Type: Grant
    Filed: February 15, 1977
    Date of Patent: October 17, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Joachim Adelski, Wilhelm Gertz