Patents by Inventor Johannes Andrianus Duits

Johannes Andrianus Duits 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).

  • Bearing with integral transformer
    Patent number: 6705761
    Abstract: A bearing is provided including a first part provided with a first coil (4) and a second part rotatable with respect to the first part about a bearing axis and being provided with a second coil which is electromagnetically coupled to the first coil. The first and second coil are magnetically enclosed by a first covering and a second covering, respectively. The first covering is fixed to the first part and the second covering is fixed to the second part. An air gap is formed between facing ends of the first and second coverings, with at least one of the facing ends of the first and second coverings being provided with at least one recession, such that the air gap varies when the first part and second part rotate with respect to each other. This may be used to provide an indication of speed (bearing rotation) without further sensors.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: March 16, 2004
    Assignee: SKF Engineering and Research Centre, B.V.
    Inventors: Johannes Andrianus Duits, Johannes Albertus Van Winden, Eduardus Gerardus Maria Holweg, Anton Paweletz