Patents by Inventor David Wieczorek

David Wieczorek 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: 20240364169
    Abstract: Stator for an electric machine, having a stator core with two axial end sides, a stator winding which extends through the stator core in the axial direction and is formed from a plurality of conductor segments, and covers of a first and a second type. The conductor segments have, at one of the end sides, end sections which are electrically conductively and mechanically connected to one another in pairs to form end section arrangements. The covers of the first type each cover at least two end section arrangements at their free end, and the covers of the second type each cover at least one end section arrangement at their free end.
    Type: Application
    Filed: July 25, 2022
    Publication date: October 31, 2024
    Applicant: Valeo eAutomotive Germany GmbH
    Inventors: David FOERSTER, Sebastian BEETZ, Florian VOLKMUTH, Christoph ENGLERT, Christoph WIECZOREK, Nikolas SEUBERT
  • Publication number: 20240299707
    Abstract: A launching catheter for targeting a second vessel from a first vessel includes a catheter including a proximal portion and a distal portion including a needle aperture and a flat rectangular radiopaque marker. The flat rectangular radiopaque marker disappears under fluoroscopy upon rotation to provide information about rotational alignment of the launching catheter. The launching catheter includes a needle configured to extend through the needle aperture. A method of aligning the catheter includes rotating the catheter in a first blood vessel until the marker has a thickness (e.g., minimal thickness) under fluoroscopy. The thickness indicates rotational alignment of the catheter.
    Type: Application
    Filed: November 13, 2023
    Publication date: September 12, 2024
    Inventors: Sophie Humbert, Katharina Wieczorek, Anika Nguyen, Marcus Wenzel, David Hugo Deaton, Trent Matthew Mengel, Rowan Olund Hettel
  • Patent number: 6179227
    Abstract: A fuel injector with a valve body having an inlet, an outlet, and an axially extending fuel passageway from the inlet to the outlet. An armature located proximate the inlet of the valve body. A needle valve operatively connected to the armature. A valve seat proximate the outlet of the valve body. A swirl generator disk located proximate the valve seat. The swirl generator disk having at least one slot extending tangentially from a central aperture. A flat guide disk having a first surface, a second surface adjacent the flat swirl generator disk, a guide aperture, and at least one fuel passage having a wall extending between the first surface and the second surface. The wall includes an inlet, an outlet, and a transition region between the inlet and the outlet that defines a cross-sectional area of the at least one passage. The transition region is provided by a surface of the wall.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: January 30, 2001
    Assignee: Siemens Automotive Corporation
    Inventors: Wei-Min Ren, David Wieczorek
  • Patent number: 6039272
    Abstract: A high pressure fuel injector has a swirl generator with a metering disk upstream of the valve seat. The disks function to redirect the axially flowing fuel through the injector into a tangential fuel flow. As the fuel moves past the needle valve and the valve seat, the narrow cross section imparts a higher velocity to the fuel to atomize the fuel. As the fuel leaves the swirl generator and is ejected from the injector, the fuel forms a hollow conical sheet containing atomized fuel.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: March 21, 2000
    Assignee: Siemens Automotive Corporation
    Inventors: Wei-Min Ren, David Wieczorek
  • Patent number: 5875972
    Abstract: A high pressure fuel injector has a swirl generator with a metering disk upstream of the valve seat. The disks function to redirect the axially flowing fuel through the injector into a tangential fuel flow. As the fuel moves past the needle valve and the valve seat, the narrow cross section imparts a higher velocity to the fuel to atomize the fuel. As the fuel leaves the swirl generator and is ejected from the injector, the fuel forms a hollow conical sheet containing atomized fuel.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: March 2, 1999
    Assignee: Siemens Automotive Corporation
    Inventors: Wei-Min Ren, David Wieczorek
  • Patent number: 5775600
    Abstract: A method and fuel injector for precision setting of valve lift, using a valve body shell (42) telescoped over the valve body (60), the shell (42) having a nonmagnetic extension welded to the valve body shell (42) and to the end of an inlet tube (16) providing a solenoid pole piece, with the valve body (60) and shell (42) adjusted to set the valve lift and thereafter welded together. Interference fit portions stabilize the adjusted position of the members preparatory to welding, and displaced material in a locking groove (102) creates a mechanical interlock between the valve body (60) and shell (42) to stabilize the members in their adjusted positions after welding so that the set lift is minimally affected by weld shrinkage. An external radial groove 18 allows radial bending as the weld cools to minimize axial shift of the parts and thus the effect on the set valve lift.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: July 7, 1998
    Inventors: Ray Wildeson, David Wieczorek, Gordon Wyant, Christoph Hamann
  • Patent number: 5494225
    Abstract: A non-metallic cylindrical shell is fitted to the exterior of a metallic valve body portion of a solenoid-operated fuel injector to cover otherwise exposed metal that exists between a lower O-ring seal proximate the nozzle and a non-metallic overmold that covers the solenoid and an adjoining portion of the valve body. The shell and the cover come together at a joint where they mutually axially overlap in such a manner that assures both coverage of the exposed metal and retention of the shell on the valve body for the full tolerance stack-up range of the various parts when assembled.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: February 27, 1996
    Assignee: Siemens Automotive Corporation
    Inventors: Debora E. Nally, Bryan C. Hall, David Wieczorek
  • Patent number: 5494224
    Abstract: The armature has a tubular wall bounding a main axial through-hole. The upper axial end has a larger outside diameter than does the lower axial end. A portion of the tubular wall lying between these upper and lower ends has a frustoconical exterior surface. A single through-hole extends through the tubular wall at this frustoconical surface to non-perpendicularly intersect the main axial through-hole. The upper end of a needle valve is inserted into the lower axial end of the main through-hole, and the two parts are joined there by welding and/or crimping. The inserted end of the needle valve does not obstruct the single through-hole extending through the tubular wall so that fuel entering the armature via the open upper end of the main through-hole will change direction to pass out of the armature through the single through-hole in the tubular wall.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: February 27, 1996
    Assignee: Siemens Automotive L.P.
    Inventors: Bryan C. Hall, David Wieczorek, Gordon H. Wyant
  • Patent number: 5433386
    Abstract: Dissipation of vapor bubbles in a top-feed, solenoid-operated fuel injector is enhanced by providing the otherwise circular I.D. of the adjusting tube with at least one axially extending radial slot. Different slot patterns are disclosed.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: July 18, 1995
    Assignee: Siemens Automotive L.P.
    Inventors: David Wieczorek, Gordon Wyant