Patents by Inventor Bernhard Diethelm

Bernhard Diethelm 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).

  • Power supply unit for signal luminaires
    Patent number: 9263914
    Abstract: For signal luminaires which indicate the term STOP or DANGER upon activation, a circuit containing a first operating case feed unit and a second auxiliary source is provided for the purpose of supplying a reliable power supply. In this case, the second auxiliary source is inductively coupled to the signal luminaire electric circuit; while the signal luminaires are capacitively coupled to ground. The use of switches during operation in a fall-back level is obviated in this way.
    Type: Grant
    Filed: May 21, 2011
    Date of Patent: February 16, 2016
    Assignee: SIEMENS SCHWEIZ AG
    Inventors: Bernhard Diethelm, Rolf Schmid
  • POWER SUPPLY UNIT FOR SIGNAL LUMINAIRES
    Publication number: 20130113377
    Abstract: For signal luminaires which indicate the term STOP or DANGER upon activation, a circuit containing a first operating case feed unit and a second auxiliary source is provided for the purpose of supplying a reliable power supply. In this case, the second auxiliary source is inductively coupled to the signal luminaire electric circuit; while the signal luminaires are capacitively coupled to ground. The use of switches during operation in a fall-back level is obviated in this way.
    Type: Application
    Filed: May 21, 2011
    Publication date: May 9, 2013
    Applicant: SIEMENS SCHWEIZ AG
    Inventors: Bernhard Diethelm, Rolf Schmid