Patents by Inventor David Baumann

David Baumann 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).

  • Publication number: 20250096691
    Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.
    Type: Application
    Filed: September 18, 2024
    Publication date: March 20, 2025
    Inventors: Daniel Rothmund, Francisco Canales, David Baumann, Daniel Christen, Levy Costa
  • Publication number: 20220046830
    Abstract: A converter including a semiconductor module and a cooling housing. The semiconductor module includes a semiconductor chip, a substrate having a first side and a second side, a base plate having a first side and a second side, and a molding compound. The semiconductor chip connects to the first side of the substrate. The second side of the substrate connects to the first side of the base plate, the second side of the base plate has a first region and a second region. The first region has a surface expansion, and the first region having the surface expansion contacts with a coolant liquid in an operating state. The second region forms a closed path around the first region, the cooling housing has a plate including at least one hole, and the plate is connected around the hole to the second region of the base plate by welding.
    Type: Application
    Filed: February 27, 2020
    Publication date: February 10, 2022
    Applicants: AUDI AG, ABB POWER GRIDS SWITZERLAND AG
    Inventors: Thomas GRADINGER, David BAUMANN, Chunlei LUI, Daniele TORRESIN
  • Publication number: 20060163868
    Abstract: A vehicle service tag sheet system for facilitating a vehicle service request generally includes a pad of sheets attached to a backing material of a thickness sufficient to allow a service station attendant to take notes on one of the sheets without placing the pad on a hard surface. In one embodiment, each sheet includes a vehicle identification section that has printed thereon an identification number, and a key identification section that has printed thereon the identification number. Each sheet also includes a services section that has printed thereon the identification number and prompts for reminding the user to take down pertinent information for the vehicle service request.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 27, 2006
    Inventor: David Baumann
  • Patent number: 6674606
    Abstract: A method and apparatus for normalizing the acceleration constant used by a servo control system in a disc drive are disclosed. The method and apparatus involve performing a test seek and summing the position error measured at sample periods during the deceleration phase of the test seek. A correction factor applied to the acceleration constant is adjusted if the sum of the position errors differs from the sum of position errors measured from a nominal seek. Adjusting the correction factor to cause a position error sum that is close or equal to the sum from the nominal seek provides a relatively symmetrical seek arrival without additional correction factor offsets or gain variances.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: January 6, 2004
    Assignee: Seagate Technology LLC
    Inventor: Todd David Baumann
  • Patent number: 6671119
    Abstract: The present invention is a method of correcting radial position error signal (PES) values by utilizing predetermined error correction values located at predetermined locations in advance of their associated servo fields. Calculated correction values are written to zero-acceleration path (ZAP) fields on the disc during the manufacture process. ZAP fields are positioned before the servo fields whose PES they are designed to correct. The ZAP field is comprised of two or more correction data elements to correct subsequent PES values. As the read/write head flies along a track, it reads a ZAP field, and stores the PES correction data in local random access memory (RAM). Subsequently, the corresponding servo field is read and the stored PES correction data is used to correct the PES. Two types of ZAP fields are written on the disc—one type for read operations, another type for write operations.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: December 30, 2003
    Assignee: Seagate Technology LLC
    Inventors: Todd David Baumann, EweChye Tan
  • Patent number: 5603451
    Abstract: A thermostat for use within a building consisting of a wall-mounted unit and a remote unit movably attached thereto by means of a removable, flexible connecting cable. The remote unit is composed of a separate base portion and a separate movable portion. The base portion is provided with means for attaching the base portion to the back of a room furnishing and the movable portion can removably attach to either the wall-mounted unit when the connecting cable is removed or to the base portion when the connecting cable is reattached. The base portion is provided with "U" shaped sides which form a track for movably receiving the movable portion when the movable portion is disengaged from the wall-mounted unit.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: February 18, 1997
    Assignee: John W. Helander
    Inventors: John W. Helander, David Baumann, Chean F. Fong, Mark Szewczul