Patents by Inventor Ernst H. Grundmann

Ernst H. Grundmann 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: 5247419
    Abstract: A low voltage switchgear with a single or multipole contact arrangement (1) with a corresponding number of fixed contacts (2) and movable contacts (3), a magnet armature (4) that moves the movable contacts (3), at least one magnet coil (5) that is energized by direct current and a setpoint switch release (9).
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: September 21, 1993
    Inventor: Ernst H. Grundmann
  • Patent number: 5149043
    Abstract: A turntable device for audio and/or video units, floodlights, flower pots, showpieces, etc. In particular, the invention relates to a turntable device preferably having a circular base plate placed upon a base, with a circular bearing race extending on the top side of the base plate near its outer periphery. A concentric bearing ring is placed on the bearing race, for example in the form of a ball bearing ring, with a turntable having a circular bearing race extending on its underside near the outer periphery of the turntable. The turntable is concentric with the base plate to allow the turntable to turn about a common center axis. In accordance with a preferred embodiment of the invention the turntable device is also provided with a second bearing arrangement which is coaxially disposed relative to the center axis and near to the common center axis of the various parts.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: September 22, 1992
    Inventor: Ernst H. Grundmann
  • Patent number: D345473
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: March 29, 1994
    Inventor: Ernst H. Grundmann