Patents by Inventor Dietmar Kratzer

Dietmar Kratzer 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: 20110204271
    Abstract: A solenoid valve for controlling a fluid is disclosed. The solenoid includes an armature, a pole core, wherein a working gap is provided between the armature and the pole core, a valve member which is connected to the armature and can be moved together with the armature, a valve body with a through-opening on which a valve seat is formed, wherein the valve member opens and closes the through-opening on the valve seat, a return element which applies a return force to the valve member in order to return the valve member to a closed state, a spring element which is arranged in the working gap, and an adjusting device which is in contact with the spring element in order to adjust a spring force of the spring element.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 25, 2011
    Applicant: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Publication number: 20110204272
    Abstract: A solenoid valve for controlling a fluid is disclosed. The solenoid includes an armature, a pole core, wherein a working gap is provided between the armature and the pole core, a valve member which is connected to the armature and can be moved together with the armature, a valve body with a through-opening on which a valve seat is formed, wherein the valve member opens and closes the through-opening on the valve seat, a return element which applies a return force to the valve member in order to return the valve member to a closed state, a spring element which is arranged in the working gap, and an adjusting device which is arranged on the armature and which is in contact with the spring element in order to adjust a spring force of the spring element.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 25, 2011
    Applicant: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Publication number: 20110147626
    Abstract: The invention relates to a magnet valve having a valve body, in which at least one inlet conduit and/or at least one outlet conduit of the magnet valve is provided in at least some regions in the valve body. The inlet conduit and/or outlet conduit are in fluidic communication with a valve seat of the magnet valve. According to the invention in the valve body, a receptacle region is provided, in which an insert part having or embodying the inlet conduit and/or the outlet conduit in at least some regions is disposed. The invention further relates to a driver assistance system having such a magnet valve.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 23, 2011
    Inventors: Edgar KURZ, Dietmar Kratzer
  • Patent number: 7871056
    Abstract: The invention relates to a magnetic valve which is caulked on a caulking area by means of a fluid block. The valve includes a capsule, a magnetic assembly, an anchor and a valve insert which guides a magnetic flux which starts from the magnetic assembly in an axial manner via an airgap in the direction of the anchor. The capsule includes a lower area which is displaced in an overlapping manner on the valve insert. The overlapping area of the capsule extends in the direction of the caulking area, the magnetic assembly guides the magnetic flux via the capsule into the valve insert, the capsule is caulked with a valve bushing on the caulking area by means of a fluid block and a bushing is inserted into the capsule.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: January 18, 2011
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Publication number: 20100264341
    Abstract: The invention relates to a valve cartridge for a solenoid valve having a capsule, a magnetic armature that is movably guided within the capsule, a valve insert inserted into the capsule at a first end, and a valve body, which is pressed into a second end of the valve insert, and having a main valve seat. The magnetic armature, moved by a generated magnetic force, moves a tappet that is guided within the valve insert. The tappet has a locking element which includes a sealing element which plunges into the main valve seat of the valve body in a sealing manner for carrying out a sealing function, and an associated solenoid valve. According to the invention, the valve insert is configured as a slotted bushing, having a collar integrated onto the second end of the valve insert in order to increase an outer diameter and a shape stability of the valve insert.
    Type: Application
    Filed: September 23, 2008
    Publication date: October 21, 2010
    Inventor: Dietmar Kratzer
  • Publication number: 20100264340
    Abstract: The invention relates to a solenoid valve having a magnet assembly and a valve cartridge comprising a capsule, a valve insert connected to the capsule, an armature that is movably disposed within the capsule. The armature includes a tappet having a locking element and a main sealing element, and a valve body having a main valve seat pressed into the valve insert. A magnetic force generated by the magnet assembly axially moves the armature against the force of a return spring and plunges the main sealing element into the main valve seat in a sealing manner. According to the invention, the valve body is configured as a bonnet-shaped bushing, the open end of which is pressed into the valve insert, and acts as a spring support for the return spring, which is disposed outside of a fluid flow, which is present between the opened main valve seat and at least one radial downstream opening in the valve body configured as a bonnet-shaped bushing.
    Type: Application
    Filed: September 24, 2008
    Publication date: October 21, 2010
    Inventor: Dietmar Kratzer
  • Publication number: 20100264342
    Abstract: The invention relates to a valve cartridge for a solenoid valve, having a capsule, a magnetic armature that is movably guided within the capsule, a valve insert that is inserted into the capsule at a first end, and a valve body, which is pressed into a second end of the valve insert and has a main valve seat. The magnetic armature, moved by a generated magnetic force, moves a tappet guided within the valve insert. The tappet has a closing element with a sealing element which plunges into the main valve seat of the valve body in a sealing manner for carrying out a sealing function, and an associated solenoid valve. According to the invention the valve insert is configured as a one-part slotted bushing, and the valve body is configured as a bonnet-shaped bushing. The valve body configured as a bushing is pressed into a second end of the valve insert configured as a slotted bushing such that the main valve seat is disposed within the valve insert.
    Type: Application
    Filed: September 23, 2008
    Publication date: October 21, 2010
    Inventors: Klaus Heyer, Reinhard Fink, Florian Richter, Jean-Guillaume Pic, Daniel Brenndoerfer, Volkmar Wetschorek, Harald Speer, Florian Rispler, Oliver Holz, Friedrich Mueller, Nicolas Houis, Anton Fritz, Alice Schacherl, Franz Neuhauser, Hubert Rapp, Martin Haas, Christoph Kasper, Joerg Fricke-Schmidt, Guenther Schnalzger, Martin Kirschner, Elmar Vier, Stefan Eichmann, Jens Kolarsky, Gerhard Stokmaier, Dietmar Kratzer, Kurt Mueller
  • Publication number: 20100252762
    Abstract: The invention relates to a valve cartridge for a solenoid valve having a capsule, a magnetic armature that is movably guided within the capsule, a valve insert inserted into the capsule at a first end, and a valve body, which is pressed into a second end of the valve insert, and having a main valve seat. The magnetic armature, moved by a generated magnetic force, moves a tappet that is guided within the valve insert. The tappet has a locking element which includes a sealing element which plunges into the main valve seat of the valve body in a sealing manner for carrying out a sealing function, and an associated solenoid valve. According to the invention, the valve insert is configured as a slotted bushing, having a collar integrated onto the second end of the valve insert in order to increase an outer diameter and a shape stability of the valve insert.
    Type: Application
    Filed: September 23, 2008
    Publication date: October 7, 2010
    Inventor: Dietmar Kratzer
  • Publication number: 20100200790
    Abstract: The invention relates to a solenoid valve having a magnetic assembly and a valve cartridge including a valve insert, a closing element guided within the valve insert in a movable manner, and a valve body pressed into the valve insert. A main valve has a main sealing element connected to the closing element, and a main valve seat disposed in the valve body. A magnetic force generated by the magnetic assembly moves the closing element in the direction of the valve body, as a result of which the main sealing element is inserted into the main valve seat in a sealing manner. According to the invention, the valve body is configured as a sleeve, the open end of which is pressed into the valve insert. The main valve seat with a through opening on the inside is disposed at a hood-shaped end of the valve body sleeve.
    Type: Application
    Filed: June 10, 2008
    Publication date: August 12, 2010
    Inventor: Dietmar Kratzer
  • Publication number: 20100187457
    Abstract: The invention relates to a solenoid valve with a magnet assembly and a valve cartridge. The valve cartridge includes a capsule and an armature which is movably disposed within the capsule and which has a first closing element which interacts with a main valve seat to form a seal. A magnetic force, generated by the magnet assembly, moves the armature with the first closing element, as a result of which the first closing element with a first sealing region dips into the main valve seat to form a seal. According to the invention, the capsule is constructed with an inner curvature in order to reduce the overall height of the valve cartridge. An upper end of the armature is fitted to the shape of the inner curvature of the capsule by means of a depression.
    Type: Application
    Filed: April 11, 2008
    Publication date: July 29, 2010
    Inventor: Dietmar Kratzer
  • Publication number: 20100187459
    Abstract: The invention relates to a valve cartridge for a solenoid valve having a capsule, a valve insert which is pushed into the capsule, and a tappet which is guided in a movable fashion in an inner bore of the valve insert. At least one axially running volume-compensating groove is arranged between the inner bore of the valve insert and a tappet casing. According to the invention, the tappet is designed such that the tappet casing has a simple geometric shape and the valve insert is designed such that the at least one axially running volume-compensating groove is formed into the valve insert and is defined by the shape of the inner bore of the valve insert.
    Type: Application
    Filed: July 1, 2008
    Publication date: July 29, 2010
    Inventor: Dietmar Kratzer
  • Patent number: 7726628
    Abstract: This disclosure teaches a magnet valve, having a valve insert and a tappet which is guided movably via a tappet guide in the valve insert and which is braced via a restoring spring on a valve body, and the restoring spring acts between a first contact face of the tappet and a second contact face on the valve body. According to the invention, fixation means which define a position of the restoring spring relative to the tappet and the valve body are disposed on the second contact face of the valve body.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 1, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Patent number: 7681862
    Abstract: A magnet valve having a valve insert and a tappet, guided movably in the valve insert via a tappet guide, which tappet is braced, via a restoring spring resting on a contact face of the tappet, is braced on a valve body. According to the invention, fixation means which define a rotational position of the restoring spring relative to the tappet are disposed on the contact face of the tappet.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: March 23, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Patent number: 7661652
    Abstract: An electromagnetically actuatable valve for brake systems in motor vehicles, comprises a hydraulic part and an electric part. The valve is partially placed inside a valve block, in which an inlet borehole and an outlet borehole for a hydraulic fluid are made. The hydraulic part comprises a valve element inside of which a transversal borehole is made that communicates with the inlet borehole. In addition, a number of longitudinal boreholes, which are connected to the outlet borehole, are made in the valve element. The transversal borehole and the longitudinal boreholes are connected via a closing element. The valve enables a controlled opening and closing of the closing element thereby making a low-noise switching of the valve possible.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: February 16, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Sezgin Acar, Jens Kolarsky, Boris Buchtala, Erich Ludewig, Dietmar Sommer, Massimiliano Ambrosi, Valentin Schubitschew, Ingo Buchenau, Rafael Gonzalez Romero, Dietmar Kratzer, Michael Hilden
  • Patent number: 7575218
    Abstract: The invention relates to a magnet valve, having a valve insert and a tappet guided movably in the valve insert via a tappet guide, which tappet is braced on a valve body via a restoring spring resting a contact face of the tappet, and the restoring spring is guided radially from inside on one end by a spring guide of the tappet, the spring guide adjoining the contact face. According to the invention, centering means are present, which are disposed on the tappet in such a way that the restoring spring is centered and radially guided from inside over a substantial portion of its length.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: August 18, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Harald Speer, Thomas Michl, Ralf Schindler, Dietmar Kratzer, Elmar Vier, Gerhard Schuster
  • Publication number: 20090008587
    Abstract: The invention relates to a solenoid valve having a valve insert and a tappet which is movably guided in the valve insert by a tappet guide. The tappet is supported on a valve element by a restoring spring. According to the invention a centering element is arranged on the valve insert in the region of the restoring spring in such a way that the restoring spring is centered and stabilized.
    Type: Application
    Filed: December 1, 2006
    Publication date: January 8, 2009
    Inventors: Harald Speer, Dietmar Kratzer
  • Publication number: 20090000467
    Abstract: A hydraulic unit comprises a solenoid valve group with at least two solenoid valves having each a valve cartridge and a solenoid subassembly arranged around the valve cartridge. According to the invention, a positioning unit is arranged between at least two adjacent solenoid valves and applies a force to at least two adjacent solenoid valves in such a way that the corresponding solenoid subassembly of the solenoid valve takes a defined radial position relative to the corresponding valve cartridge of the solenoid valve.
    Type: Application
    Filed: December 4, 2006
    Publication date: January 1, 2009
    Inventor: Dietmar Kratzer
  • Patent number: 7467780
    Abstract: An electromagnetic valve is provided with an elongated tappet guided axially displaceably in a tappet guide, and with a sealing body, embodied on the tappet, that can seal against a sealing seat. So that the valve can be produced more economically yet can be regulated more precisely, the sealing seat and the tappet guide are embodied in one piece. The adjustability of the valve is assured in particular by an adjusting ring.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: December 23, 2008
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Kratzer
  • Publication number: 20080302984
    Abstract: The invention relates to a magnetic valve having a magnetic assembly and a capsule. An armature is disposed in the capsule and a valve insert is inserted in the capsule. A tappet is guided in a displaceable manner within the inner bore of the valve insert and sealingly immerges in a sealing seat. The valve insert is arranged at a distance from the armature via an adjustable air gap. According to the invention, the sealing seat is arranged in a sleeve which itself is disposed inside the capsule. The sleeve has at least one opening through which adjusting elements act upon the valve seat in order to regulate the magnetic flux generated by the magnetic assembly. The air gap between the valve insert and the armature is variable, whereby the adjusting elements either move the valve insert in axial direction towards the armature in order to increase the magnetic flux or move the valve insert away from the armature in order to reduce the magnetic flux.
    Type: Application
    Filed: December 1, 2006
    Publication date: December 11, 2008
    Inventor: Dietmar Kratzer
  • Publication number: 20080203343
    Abstract: The invention relates to a magnetic valve which is caulked on a caulking area by means of a fluid block. The valve includes a capsule, a magnetic assembly, an anchor and a valve insert which guides a magnetic flux which starts from the magnetic assembly in an axial manner via an airgap in the direction of the anchor. The capsule includes a lower area which is displaced in an overlapping manner on the valve insert. The overlapping area of the capsule extends in the direction of the caulking area, the magnetic assembly guides the magnetic flux via the capsule into the valve insert, the capsule is caulked with a valve bushing on the caulking area by means of a fluid block and a bushing is inserted into the capsule.
    Type: Application
    Filed: August 2, 2006
    Publication date: August 28, 2008
    Inventor: Dietmar Kratzer