Patents by Inventor Ernst Knollinger

Ernst Knollinger 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).

  • System for insulating the sound emanating from a motor/pump unit
    Patent number: 6810989
    Abstract: In an arrangement comprising a motor/pump unit and a sound-deadening cover, the sound-deadening cover absorbs the airborne noise emitted by the motor/pump unit. On the other hand, the sound-deadening cover acts like the diaphragm of a loudspeaker for the structureborne noise emanating from the motor/pump unit. In order to absorb the structureborne noise as well, the sound-deadening cover is constructed as a sound-deadening hood, and is placed over the motor/pump unit in the operating condition, without touching it. During transportation, the sound-deadening hood and the motor/pump unit are supported on one another. The arrangement is used to absorb sound from units comprising a pump and a motor driving the latter.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: November 2, 2004
    Assignee: Bosch Rexroth AG
    Inventors: Jörg Dantlgraber, Ernst Knollinger