Patents by Inventor Thomas STROF

Thomas STROF 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).

  • Switching system with preselector
    Patent number: 10153101
    Abstract: The invention relates to a switching arrangement (15) with a pre-selector (28) for a power transformer (10, 40) which has multiple windings (12, 14). The pre-selector is designed to optionally connect at least one first winding (12) to one of the two end contacts (30, 32) of at least one second winding (14). At least one first switch is arranged in the connection between the pre-selector (28) and the first winding (12), thereby allowing the pre-selector to be switched in an arc-free manner and thus in a gas-free manner as well.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: December 11, 2018
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventors: Uwe Kaltenborn, Thomas Strof, Christian Hurm, Anatoli Saveliev, Gerhard Baeuml, Alfred Bieringer, Eduard Zerr, Wolfgang Albrecht, Martin Hausmann, Andreas Stocker
  • Switching system with preselector
    Patent number: 9984833
    Abstract: The invention relates to a step switch, comprising a pre-selector and a fine selector. The invention is characterized in that the step switch has a connection (36) between the pre-selector and the fine selector (18), at least one coupling switch (38) being arranged in said connection. A pre-selector can be switched in a largely gas-free manner by means of said switchable connection with the aid of the fine selector.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 29, 2018
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventors: Uwe Kaltenborn, Thomas Strof, Christian Hurm, Anatoli Saveliev, Gerhard Baeuml, Alfred Bieringer, Eduard Zerr, Wolfgang Albrecht, Martin Hausmann, Andreas Stocker
  • Method for performing a switching process in an on-load tap changer
    Patent number: 9513654
    Abstract: The invention relates to a method for performing a switching process in an on-load tap changer between winding taps of a tapped transformer. The switching process for an on-load tap changer is subdivided into a plurality of phases according to the reactor switching principle. In these phases, the switching contacts in use are monitored during the actuation and are completely opened or closed by capacitors in the controller in the event of failure of the energy supply. Thereby critical switching states are prevented.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: December 6, 2016
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventor: Thomas Strof
  • SWITCHING SYSTEM WITH PRESELECTOR
    Publication number: 20160211090
    Abstract: The invention relates to a switching arrangement (15) with a pre-selector (28) for a power transformer (10, 40) which has multiple windings (12, 14). The pre-selector is designed to optionally connect at least one first winding (12) to one of the two end contacts (30, 32) of at least one second winding (14). At least one first switch is arranged in the connection between the preselector (28) and the first winding (12), thereby allowing the pre-selector to be switched in an arc-free manner and thus in a gas-free manner as well.
    Type: Application
    Filed: September 26, 2014
    Publication date: July 21, 2016
    Inventors: Uwe KALTENBORN, Thomas STROF, Christian HURM, Anatoli SAVELIEV, Gerhard BAEUML, Alfred BIERINGER, Eduard ZERR, Wolfgang ALBRECHT, Martin HAUSMANN, Andreas STOCKER
  • SWITCHING SYSTEM WITH PRESELECTOR
    Publication number: 20160211089
    Abstract: The invention relates to a step switch, comprising a preselector and a fine selector. The invention is characterized in that the step switch has a connection (36) between the pre-selector and the fine selector (18), at least one coupling switch (38) being arranged in said connection. A pre-selector can be switched in a largely gas-free manner by means of said switchable connection with the aid of the fine selector.
    Type: Application
    Filed: September 26, 2014
    Publication date: July 21, 2016
    Inventors: Uwe KALTENBORN, Thomas STROF, Christian HURM, Anatoli SAVELIEV, Gerhard BAEUML, Alfred BIERINGER, Eduard ZERR, Wolfgang ALBRECHT, Martin HAUSMANN, Andreas STOCKER
  • METHOD FOR PERFORMING A SWITCHING PROCESS IN AN ON-LOAD TAP CHANGER
    Publication number: 20160018840
    Abstract: The invention relates to a method for performing a switching process in an on-load tap changer between winding taps of a tapped transformer. The switching process for an on-load tap changer is subdivided into a plurality of phases according to the reactor switching principle. In these phases, the switching contacts in use are monitored during the actuation and are completely opened or closed by capacitors in the controller in the event of failure of the energy supply. Thereby critical switching states are prevented.
    Type: Application
    Filed: March 21, 2014
    Publication date: January 21, 2016
    Inventor: Thomas STROF