Patents by Inventor Georg Friedrich Papst

Georg Friedrich Papst 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: 4007390
    Abstract: In the case of a collector-less D-C motor designed as a disc motor with an external rotor, the permanently magnetized external rotor is supported in an axially space-saving manner in a bearing tube attached to the stator bedplate. For the purpose of facilitating centering of the stator bedplate in the air gap of the rotor during manufacture, a flange plate inserted onto the bearing tube serves for anchoring purposes, and the stator bedplate is secured to this flange plate.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: February 8, 1977
    Assignee: Papst-Motoren KG
    Inventors: Rolf Muller, Georg Friedrich Papst, Volker Schlicker
  • Patent number: 3934841
    Abstract: A tape drive system for a cassette tape recording and/or reproducing apparatus has at least three drive motors, two for driving the tape spools and at least a third for driving a tape drive capstan. two of the motors are disposed so as to engage the cassette from one side thereof, while the other motor or motors is or are disposed so as to engage the cassette from the other side. The motor or motors at a first side of the cassette is or are disposed in a main housing, while the other motor or motors at the second side of the cassette is or are in a casing portion that is pivotable or linearly displaceable relative to the main housing, for insertion or removal of a cassette. The apparatus can have a dual capstan tape drive.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: January 27, 1976
    Assignee: Papst-Motoren KG
    Inventors: Edgar Zuckschwert, Georg Friedrich Papst