Patents by Inventor Thomas Schäffner

Thomas Schäffner 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: 9991794
    Abstract: An inverting buck voltage converter constructed of a switched-mode hybrid topology, with a capacitive input stage and an inductive output stage. The input stage operates as a charge pump to charge a flying capacitor connected in series with an inductor in the output stage. Clock circuitry generates first and second non-overlapping clock phases. In the second clock phase, the flying capacitor is charged to the input voltage, with a flying node between the flying capacitor and the output inductor connected at ground through a rectifier, while in the first clock phase, the flying capacitor supports the inductor current. The arrangement of the flying capacitor and inductor is such that the voltage appearing at the output terminal is inverted from the input voltage. Continuous output current is provided. Current limiting techniques protect the flying capacitor from overcurrent conditions.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: June 5, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Michael Lueders, Erich Bayer, Thomas Schaeffner, Giacomo Calabrese
  • Publication number: 20170279354
    Abstract: An inverting buck voltage converter constructed of a switched-mode hybrid topology, with a capacitive input stage and an inductive output stage. The input stage operates as a charge pump to charge a flying capacitor connected in series with an inductor in the output stage. Clock circuitry generates first and second non-overlapping clock phases. In the second clock phase, the flying capacitor is charged to the input voltage, with a flying node between the flying capacitor and the output inductor connected at ground through a rectifier, while in the first clock phase, the flying capacitor supports the inductor current. The arrangement of the flying capacitor and inductor is such that the voltage appearing at the output terminal is inverted from the input voltage. Continuous output current is provided. Current limiting techniques protect the flying capacitor from overcurrent conditions.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 28, 2017
    Inventors: Michael Lueders, Erich Bayer, Thomas Schaeffner, Giacomo Calabrese
  • Patent number: 8903765
    Abstract: An embodiment of the invention provides a method for recording, managing and tracking changes to objects in a computer system. A master record is created for the computer system; and, a transactional record is created for an object in the computer system. The master record includes the current status of the object and the current status for all objects associated to the object. The transactional record is updated in the electronic database; and, the master record is updated when the transactional record is updated. The master record is linked to all of the transactional records of the objects associated to the object with the processor. The master record is updated with the processor when a transactional record of the objects associated to the object is updated or added.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Ed Cordell, Mark W. Honeck, Joachim Lohmiller, Sue Merkle, Jan Nielsen, Paul Noga, Jr., William Reilly, John J. Roberts, Siegfried F. Sanders, Thomas Schaeffner, Debra J. Waite, Deirdre A. Wessel, Dan Wingard
  • Publication number: 20140046897
    Abstract: An embodiment of the invention provides a method for recording, managing and tracking changes to objects in a computer system. A master record is created for the computer system; and, a transactional record is created for an object in the computer system. The master record includes the current status of the object and the current status for all objects associated to the object. The transactional record is updated in the electronic database; and, the master record is updated when the transactional record is updated. The master record is linked to all of the transactional records of the objects associated to the object with the processor. The master record is updated with the processor when a transactional record of the objects associated to the object is updated or added.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 13, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ed Cordell, Mark W. Honeck, Joachim Lohmiller, Sue Merkle, Jan Nielsen, Paul Noga, JR., William Reilly, John J. Roberts, Siegfried F. Sanders, Thomas Schaeffner, Debra J. Waite, Deirdre A. Wessel, Dan Wingard
  • Patent number: 6390928
    Abstract: A driveshaft (11) having two ball type constant velocity fixed joints (12, 13), a shaft part (14) connecting said two joints, and an axial plunging part (15) arranged in said shaft part (14). The ball type constant velocity fixed joints (12, 13) each comprise: a bell-shaped outer joint part (16, 26) provided with internally positioned first ball tracks (18, 28); a hub-shaped inner joint part (19, 29) provided with externally positioned second ball tracks (21, 31) and arranged inside said outer joint part (16, 26); balls (24, 34) engaging pairs of first ball tracks (18, 28) and second ball tracks (21, 31); and an annular ball cage (22, 32) with circumferentially distributed cage windows in which the balls are held in a common plane. The pairs of first ball tracks (18, 28) and second ball tracks (21, 31), when viewed in a longitudinal section, form opening angles (&agr;12, &agr;13) relative to one another for controlling the balls (24, 34) in the ball tracks.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: May 21, 2002
    Assignee: GKN Lobro GmbH
    Inventors: Hans-Heinrich Welschof, Thomas Schäffner, Joachim Prölb, Peter Schwärzler