Patents by Inventor Alois von Ehr

Alois von Ehr 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).

  • Compact motor mount for cassette drive
    Patent number: 5028829
    Abstract: A compact motor mount for cassette drive systems includes a base plate in the form of a laminate that includes at least one planar layer of ferromagnetic material sandwiched between two printed circuit boards. A capstan motor is supported by the base plate. The stator coil assembly of the capstan motor is mounted on one side of the base plate directly on one of the two printed circuit boards. At least one winding drive motor also is supported in common with the capstan motor by the base plate. The stator coil assembly of the drive motor is mounted on the other side of the base plate directly on the second of the two printed circuit boards. Each of the motors has a permanent magnet rotor mounted on a shaft and facing the respective stator coil assemblies across an air gap defined therebetween.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 2, 1991
    Assignee: Papst-Motoren GmbH & Co. K.G.
    Inventors: Heinrich Cap, Alois von Ehr, Edgar Zuckschwert
  • Compact motor mount for information storage devices
    Patent number: RE35702
    Abstract: A compact motor mount for cassette drive systems includes a base plate in the form of a laminate that includes at least one planar layer of ferromagnetic material sandwiched between two printed circuit boards. A capstan motor is supported by the base plate. The stator coil assembly of the capstan motor is mounted on one side of the base plate directly on one of the two printed circuit boards. At least one winding drive motor also is supported in common with the capstan motor by the base plate. The stator coil assembly of the drive motor is mounted on the other side of the base plate directly on the second of the two printed circuit boards. Each of the motors has a permanent magnet rotor mounted on a shaft and facing the respective stator coil assemblies across an air gap defined therebetween.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: December 30, 1997
    Assignee: Papst Licensing, GmbH
    Inventors: Heinrich Cap, Alois Von Ehr, Edgar Zuckschwert