Patents by Inventor Stefan Klotz
Stefan Klotz 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).
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Patent number: 10598267Abstract: A rotor for a cam phaser, the rotor rotating about a rotation axis and the rotor including a first face; a receiving face arranged opposite to the first face; a central portion; at least one lobe that is arranged at the central portion and which extends away from the central portion in a radial direction; and a cam shaft receiving recess provided at the receiving face and configured to receive a cam shaft, wherein the cam shaft receiving recess includes an inside surface, wherein at least two cam shaft centering elements are arranged at the inside surface for centering the cam shaft, and wherein the cam shaft centering elements are configured as protrusions. The invention also relates to a joining kit.Type: GrantFiled: October 15, 2015Date of Patent: March 24, 2020Assignee: ECO Holding 1 GmbHInventors: Florian Hentsch, Karl-Heinz Isenberg, Stefan Klotz, Rainer Maier
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Patent number: 10054210Abstract: The invention relates to a rotor for a cam phaser wherein the rotor is provided for a rotation about a rotation axis and includes at least one first vane essentially radially extending away from the rotation axis, wherein a surface of the rotor includes at least one first face, at least one second face that is parallel to the first face, at least one first outer circumferential partial surface of the first vane, wherein a protrusion profile is provided at the surface. The invention also relates to a method for producing the rotor.Type: GrantFiled: October 29, 2015Date of Patent: August 21, 2018Assignee: Hillte Germany GmbHInventors: Florian Hentsch, Karl-Heinz Isenberg, Stefan Klotz, Rainer Maier, Jens Bartzsch
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Publication number: 20160230867Abstract: A rotor for a cam phaser, the rotor rotating about a rotation axis and the rotor including a first face; a receiving face arranged opposite to the first face; a central portion; at least one lobe that is arranged at the central portion and which extends away from the central portion in a radial direction; and a cam shaft receiving recess provided at the receiving face and configured to receive a cam shaft, wherein the cam shaft receiving recess includes an inside surface, wherein at least two cam shaft centering elements are arranged at the inside surface for centering the cam shaft, and wherein the cam shaft centering elements are configured as protrusions. The invention also relates to a joining kit.Type: ApplicationFiled: October 15, 2015Publication date: August 11, 2016Inventors: Florian Hentsch, Karl-Heinz Isenberg, Stefan Klotz, Rainer Maier
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Publication number: 20160108913Abstract: The invention relates to a rotor for a cam phaser wherein the rotor is provided for a rotation about a rotation axis and includes at least one first vane essentially radially extending away from the rotation axis, wherein a surface of the rotor includes at least one first face, at least one second face that is parallel to the first face, at least one first outer circumferential partial surface of the first vane, wherein a protrusion profile is provided at the surface. The invention also relates to a method for producing the rotor.Type: ApplicationFiled: October 29, 2015Publication date: April 21, 2016Inventors: Florian Hentsch, Karl-Heinz Isenberg, Stefan Klotz, Rainer Maier, Jens Bartzsch
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Patent number: 8127661Abstract: The present invention relates to a hydraulic system that includes a compression chamber capable of being subjected to the pressure of a hydraulic fluid; a piston movable inside the compression chamber along an axis; and at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis in such a manner as to compensate for non-axially symmetrical stresses induced by the pressure of the fluid.Type: GrantFiled: December 18, 2006Date of Patent: March 6, 2012Assignees: Universite Pierre et Marie Curie, Centre National de la Recherche ScientifiqueInventors: Stefan Klotz, Gerard Hamel, Joel Frelat
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Patent number: 8074673Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.Type: GrantFiled: June 16, 2009Date of Patent: December 13, 2011Assignee: Hydraulik-Ring GmbHInventors: Dieter Maisch, Stefan Klotz, Matthias Bleeck
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Publication number: 20090256088Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.Type: ApplicationFiled: June 16, 2009Publication date: October 15, 2009Applicant: HYDRAULIK-RING GmbHInventors: Dieter Maisch, Stefan Klotz, Matthias Bleeck
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Patent number: 7594516Abstract: A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.Type: GrantFiled: May 3, 2006Date of Patent: September 29, 2009Assignee: Hydraulik-Ring GmbHInventors: Dieter Maisch, Stefan Klotz, Matthias Bleeck
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Publication number: 20090091090Abstract: The present invention relates to a hydraulic system that includes a compression chamber capable of being subjected to the pressure of a hydraulic fluid; a piston movable inside the compression chamber along an axis; and at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis in such a manner as to compensate for non-axially symmetrical stresses induced by the pressure of the fluid.Type: ApplicationFiled: December 18, 2006Publication date: April 9, 2009Applicants: UNIVERSITE PIERRE ET MARIE CURIE (PARIS 6), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Stefan Klotz, Gerard Hamel, Joel Frelat
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Patent number: 7296689Abstract: A filter cartridge for liquid media at risk for freezing employed in fuel cell operated vehicles and internal combustion engines has a housing and a filter lid connected to the housing for closing the housing. A filter insert is inserted into the housing and provided with at least one filter element and terminal parts. The filter element is positioned between the terminal parts. The filter insert also has at least one pretensioning part for axially pretensioning the at least one filter element. At least one reinforcement part is provided that has at least one profiled section. It is inserted into the filter element and receives at least one of torque and axial forces. This prevents twisting of the filter element and improves the sealing action and the filter function.Type: GrantFiled: May 9, 2003Date of Patent: November 20, 2007Assignee: Hydraulik-Ring GmbHInventors: Stefan Klotz, Dieter Maisch
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Publication number: 20070020123Abstract: A pump for conveying an exhaust gas treatment medium in diesel engines has a pump housing and a piston arranged in the pump housing and movable in the pump housing against a counterforce. The piston pumps an exhaust gas treatment medium form at least one inlet of the pump to at least one outlet of the pump. A diaphragm separates the piston from the exhaust gas treatment medium. The counterforce is provided by at least one spring that is a pressure spring.Type: ApplicationFiled: August 19, 2004Publication date: January 25, 2007Applicant: Hydraulik-Ring GmbHInventors: Roland Meyer, Dieter Maisch, Stefan Klotz
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Patent number: 7156239Abstract: A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that surrounds at least partially the filter insert. The elastically deformable casing part is a part of the lid member or of the outer member of the housing and is made of a thermoplastic synthetic material. When the liquid undergoes freezing and thawing in the filter unit, the elastically deformable casing part can compensate the volume changes caused by freezing and thawing.Type: GrantFiled: May 9, 2003Date of Patent: January 2, 2007Assignee: Hydraulik-Ring GmbHInventors: Stefan Klotz, Dieter Maisch
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Publication number: 20060254648Abstract: The invention relates to a freeze-resistant metering valve that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until the freezing pressure onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.Type: ApplicationFiled: May 3, 2006Publication date: November 16, 2006Applicant: HYDRAULIK-RING GmbHInventors: Dieter Maisch, Stefan Klotz, Matthias Bleeck
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Publication number: 20060236679Abstract: An exhaust gas after treatment device for a diesel engine of a vehicle has at least one injection valve with an injection nozzle through which an exhaust gas treatment medium is injected into an exhaust pipe. At least one pump is provided that conveys the exhaust gas treatment medium to the at least one injection valve. At least one sensor and at least one control are also provided. The pump, the sensor, and the injection valve are connected to the at least one control. The at least one pump and the at least one control are combined to an assembly, and the assembly also includes the at least one injection valve.Type: ApplicationFiled: August 19, 2004Publication date: October 26, 2006Applicant: Hydraulik-Ring GmbHInventors: Roland Meyer, Dieter Maisch, Stefan Klotz, Wolgang Stephan
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Publication number: 20030209484Abstract: A filter cartridge for liquid media at risk for freezing employed in fuel cell operated vehicles and internal combustion engines has a housing and a filter lid connected to the housing for closing the housing. A filter insert is inserted into the housing and provided with at least one filter element and terminal parts. The filter element is positioned between the terminal parts. The filter insert also has at least one pretensioning part for axially pretensioning the at least one filter element. At least one reinforcement part is provided that has at least one profiled section. It is inserted into the filter element and receives at least one of torque and axial forces. This prevents twisting of the filter element and improves the sealing action and the filter function.Type: ApplicationFiled: May 9, 2003Publication date: November 13, 2003Applicant: HYDRAULIK-RING GMBHInventors: Stefan Klotz, Dieter Maisch
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Publication number: 20030209482Abstract: A filter unit for liquids undergoing freezing for a metering unit of an exhaust gas treatment unit has a housing having an outer member and a lid member. At least one filter insert is arranged in the housing. An elastically deformable casing part is provided that surrounds at least partially the filter insert. The elastically deformable casing part is a part of the lid member or of the outer member of the housing and is made of a thermoplastic synthetic material. When the liquid undergoes freezing and thawing in the filter unit, the elastically deformable casing part can compensate the volume changes caused by freezing and thawing.Type: ApplicationFiled: May 9, 2003Publication date: November 13, 2003Applicant: HYDRAULIK-RING GMBHInventors: Stefan Klotz, Dieter Maisch
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Publication number: 20020081239Abstract: A device for exhaust gas after treatment of diesel engines has one or more storage containers containing an urea solution and having a flexible wall. At least one compressed air conduit is connected to a mixing area and supplies compressed air to the mixing area. A pump conveys the urea solution from the storage container to the mixing area where a mist of the urea solution and the compressed air is formed. In another embodiment, the pump is eliminated and the urea solution is conveyed under its own weight from the storage container to the mixing area. In yet another embodiment, a pressure chamber is provided in which the storage container is arranged. A compressed air supply conduit is connected to the pressure chamber and pressurizes the exterior of the storage container.Type: ApplicationFiled: October 19, 2001Publication date: June 27, 2002Applicant: Hydraulik-Ring GmbHInventors: Edwin Palesch, Dieter Maisch, Stefan Klotz