Patents by Inventor Hans-Dieter Wilhelm
Hans-Dieter Wilhelm 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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Publication number: 20170250595Abstract: A brushless direct current motor with a stator and rotor uses permanent magnets facing the stator and which are held in place by springs that urge the magnets toward the periphery of a support structure for the rotor.Type: ApplicationFiled: May 11, 2017Publication date: August 31, 2017Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Hans-Dieter Wilhelm, Eugen Bernarding, Wolfram Triller, Thomas Mann, Helmut Westenberger, Peter Kohlen
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Publication number: 20110185564Abstract: An annular housing has an inner wall that is configured in the form of an inner cone. In the method for fixing the annular segment package, said package is either initially inserted into the annular housing and an annular sleeve the outer wall of which is configured in the form of an outer cone that is configured in a compatible manner to the inner cone of the annular housing, is subsequently inserted between the annular segment package and the annular housing and compressed on both sides, or is initially inserted into the annular sleeve and compressed, and the annular sleeve is subsequently inserted into the annular housing together with the annular segment package and compressed.Type: ApplicationFiled: October 6, 2008Publication date: August 4, 2011Applicant: Continental Automotive GmbHInventors: Markus Ploch, Hans-Dieter Wilhelm
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Publication number: 20080202478Abstract: Disclosed is a pressure control valve (8) for a hydraulic device, particularly a fuel supply system of a motor vehicle, comprising a valve seat (10) that is disposed between a valve member (13) and a spring element (16) for biasing the valve member (13) counter to the valve seat (10). The valve member (13) and the spring element (16) are interconnected via a traction element (14) such that the valve member (13) is reliably guided towards the valve seat (10) without using any additional guiding elements.Type: ApplicationFiled: January 5, 2005Publication date: August 28, 2008Applicant: Siemens AktiengesellschaftInventors: Dirk Möhring, Rene Schmid, Alexander Sonntag, Hans-Dieter Wilhelm
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Patent number: 6942446Abstract: The invention relates to a feed pump (2) that is configured as a side-channel pump with a plurality of identically designed feed chambers (6, 7) with outlet channels (22, 23) that are disposed opposite one another, thereby eliminating the radial forces acting upon the impeller (4) of the feed pump (2). The feed pump (2) according to the invention is especially wear-free and has a very high degree of efficiency.Type: GrantFiled: December 13, 2001Date of Patent: September 13, 2005Assignee: Siemens AktiegesellschaftInventors: Zlatko Penzar, Hans-Dieter Wilhelm
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Patent number: 6696186Abstract: The humidifying device for a fuel cell has a membrane, one side of which is exposed to cathode exhaust gas of a fuel cell for extracting water vapor from the exhaust gas. A connecting element connects the other side of the membrane to an anode or cathode gas supply to the fuel cell. In operation, water vapor permeates through the membrane and passes on through the connecting elements to humidify the gas being supplied to the fuel cell. A vacuum pump may additionally be provided to enhance the extraction of water vapor from the exhaust gas. A no metering unit allows accurate metering of the humidity of the cathode or anode gas supply.Type: GrantFiled: November 27, 2001Date of Patent: February 24, 2004Assignees: Mannesmann AG, Siemens AGInventors: Wolfgang Herdeg, Holger Klos, Martin Sattler, Sabine Hess, Hans-Dieter Wilhelm, Jürgen Habrich, Karl Eck, Markus Keutz, Thomas Zapp
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Publication number: 20040028521Abstract: The invention relates to a feed pump (2) that is configured as a side-channel pump with a plurality of identically designed feed chambers (6, 7) with outlet channels (22, 23) that are disposed opposite one another, thereby eliminating the radial forces acting upon the impeller (4) of the feed pump (2). The feed pump (2) according to the invention is especially wear-free and has a very high degree of efficiency.Type: ApplicationFiled: June 12, 2003Publication date: February 12, 2004Inventors: Zlatko Penzar, Hans-Dieter Wilhelm
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Patent number: 6610433Abstract: A fuel tank, in particular for fuel-cell systems, which can feed fuel into a system via a mechanism without a pump or the like. This is achieved by a fuel tank with a fuel cavity of variable size and a mechanism for compressing the fuel cavity. The fuel cavity is preferably bounded by a cylindrical inner wall of the fuel tank, by a circular end surface of the fuel tank and by a circular, displaceable intermediate wall. The intermediate wall is forced essentially in the direction of the fuel cavity by a spring and has a form fit with the cylindrical inner wall. A feed device and a discharge device allow incorporation in a fuel line. The system also includes a control device and a method for this fuel container, which is thus enabled to have the following operating states: A. fuel-cell system is switched on: discharge valve open, feed valve closed; B. fuel-cell system is in operation: discharge valve open, feed valve open; C. fuel-cell system is switched off: discharge valve closed, feed valve open; and D.Type: GrantFiled: March 20, 2000Date of Patent: August 26, 2003Assignees: Siemens Aktiengesellschaft, P 21 GmbHInventors: Wolfgang Herdeg, Holger Klos, Martin Sattler, Hans-Dieter Wilhelm, Jürgen Habrich, Karl Eck, Thomas Zapp, Markus Keutz
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Patent number: 6548930Abstract: An electric motor for a fuel pump wherein fuel flows through the pump, includes spring elements provided for holding magnetic shells in the stator have a face which points toward a rotor and is flush with the magnetic shells. Turbulence in the flow of the fuel within the electric motor are thereby kept particularly low. The pressure loss during the flow through the electric motor thus becomes lower. The pump according to the invention consequently has high efficiency.Type: GrantFiled: February 21, 2000Date of Patent: April 15, 2003Assignee: Mannesmann VDO AGInventors: Peter Marx, Bernd Jäger, Hans-Dieter Wilhelm, Michael Bämpfer
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Patent number: 6541143Abstract: A fuel cell system which has a fuel cell is described. Also provided is a device for producing/preparing the fuel, for example hydrogen, which is connected on its outlet side to a fuel supply line and on its inlet side to a device for supplying fuel. The device for supplying fuel has a dual pump, in which a starting material for the fuel, stored in the motor-fuel tank, and water fed in via a water supply line, which is for example process water produced during the fuel cell process, are mixed to form a fuel/water mixture. This fuel/water mixture is intermediately stored in an intermediate tank before it is fed to the device for producing/preparing the fuel.Type: GrantFiled: November 30, 2000Date of Patent: April 1, 2003Assignee: Atecs Mannesmann AGInventors: Wolfgang Herdeg, Holger Klos, Martin Sattler, Franz Reichenbach, Sabine Hess, Hans-Dieter Wilhelm, Jürgen Habrich, Karl Eck, Thomas Zapp
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Patent number: 6481958Abstract: In a feed pump designed as a side-channel pump, a blade chamber of an impeller has a contour which is formed by a radius and in which, as seen from the contour, the origin of the radius is located behind a center line of the blade chamber. A circulation flow thereby passes into the blade chamber with particularly low turbulences. The feed pump has particularly high efficiency as a result.Type: GrantFiled: July 26, 2001Date of Patent: November 19, 2002Assignee: Mannesmann Vdo AGInventors: Hans-Dieter Wilhelm, Holger Barth, Matthias Stabb
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Patent number: 6471466Abstract: A feed pump includes an impeller with two rings of guide blades delimiting blade chambers. The rings of guide blades concentrically surrounding one another and have different angular intervals between guide blades. The angular intervals between the guide blades of each ring vary within a range of values and ranges of values of each ring of guide blades is different to avoid the additions of noise emissions the feed pump consequently has noises which cause particularly little disturbance.Type: GrantFiled: March 19, 2001Date of Patent: October 29, 2002Assignee: Mannesmann VDO AGInventors: Peter Marx, Hans Dieter Wilhelm, Holger Barth
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Patent number: 6463965Abstract: A fuel tank having an inlet and an outlet is connected to a separate pressure vessel by means of a pump. Fuel vapors are pumped out of the tank and into the pressure vessel while the tank is being filled via the inlet, so that fuel vapors cannot escape during filling. After filling, the inlet is closed and the pressure in the tank is increased to about 4 bar by means of a pressure regulator in a line connecting the pressure vessel to the fuel tank. The pump is then switched off and the fuel can be delivered to the engine via the outlet under the increased fuel pressure in the tank, the pressure being reduced to fuel system pressure by a pressure regulator in the outlet line.Type: GrantFiled: June 14, 2001Date of Patent: October 15, 2002Assignees: Siemens AG, Vodafone AGInventors: Christian Rasche, Bernd Wiemann, Holger Klos, Hans-Dieter Wilhelm, Karl Eck, Thomas Zapp, Bernd Rumpf
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Patent number: 6447242Abstract: In a feed pump designed as a side-passage pump and having a driven impeller rotating in a housing a liquid to be fed is supplied radially from the inside to guide blades arranged in the impeller. For this purpose, the impeller has a groove adjoining the guide blades. As a result, Feed pump has an especially high efficiency.Type: GrantFiled: January 17, 2001Date of Patent: September 10, 2002Assignee: Mannesmann VDO AGInventor: Hans-Dieter Wilhelm
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Patent number: 6425377Abstract: In a fuel delivery unit for a motor vehicle, having a delivery pump which has a preliminary stage and a main stage, an outlet channel of the preliminary stage is guided radially outward and configured such that it rises upward. An inlet channel of the main stage is guided laterally past the preliminary stage. In accordance with this design, impellers of the delivery pump can be arranged particularly low down and gas bubbles are guided away out of the preliminary stage in a very simple manner.Type: GrantFiled: January 24, 2000Date of Patent: July 30, 2002Inventors: Peter Marx, Christoph Schmidt, Hans-Dieter Wilhelm, Thomas Werner
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Patent number: 6403243Abstract: A fuel cell system which has a fuel cell with a supply line and a discharge line for a fuel as well as a supply line and a discharge line for an oxidizing agent. Also provided is a fuel tank which contains, for example, benzene or methanol for producing the fuel for the fuel cell. To avoid the release of hydrocarbons from the fuel contained in the tank, a filter element, for example an active carbon filter, is connected to the fuel tank. To be able to regenerate the filter element, the filter element is connected to the discharge line for the oxidizing agent and/or the discharge line for the fuel. The filter element is regenerated by the flow of exhaust gas from the fuel cell. The filter element is preferably connected via a connecting line to a burner, with the result that the hydrocarbons taken up by the flow of exhaust gas can be burned in the burner. Furthermore, by designing the fuel cell system appropriately, a leakage diagnosis can also be performed in the fuel tank.Type: GrantFiled: March 30, 2000Date of Patent: June 11, 2002Assignee: Mannesman AGInventors: Wolfgang Herdeg, Holger Klos, Martin Sattler, Franz Reichenbach, Hans-Dieter Wilhelm, Jürgen Habrich, Karl Eck, Markus Keutz, Thomas Zapp
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Publication number: 20010041132Abstract: A feed pump includes an impeller with two rings of guide blades delimiting blade chambers. The rings of guide blades concentrically surrounding one another and have different angular intervals between guide blades. The angular intervals between the guide blades of each ring vary within a range of values and ranges of values of each ring of guide blades is different to avoid the additions of noise emissions the feed pump consequently has noises which cause particularly little disturbance.Type: ApplicationFiled: March 19, 2001Publication date: November 15, 2001Applicant: Mannesmann VDO AGInventors: Peter Marx, Hans Dieter Wilhelm, Holger Barth
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Publication number: 20010010874Abstract: A fuel cell system which has a fuel cell is described. Also provided is a device for producing/preparing the fuel, for example hydrogen, which is connected on its outlet side to a fuel supply line and on its inlet side to a device for supplying fuel. The device for supplying fuel has a dual pump, in which a starting material for the fuel, stored in the motor-fuel tank, and water fed in via a water supply line, which is for example process water produced during the fuel cell process, are mixed to form a fuel/water mixture. This fuel/water mixture is intermediately stored in an intermediate tank before it is fed to the device for producing/preparing the fuel.Type: ApplicationFiled: November 30, 2000Publication date: August 2, 2001Applicant: Atecs Mannesmann AGInventors: Wolfgang Herdeg, Holger Klos, Martin Sattler, Franz Reichenbach, Sabine Hess, Hans-Dieter Wilhelm, J?uuml;rgen Habrich, Karl Eck, Thomas Zapp
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Patent number: 6231300Abstract: In a peripheral pump, having a rotor (2) which rotates in a pump casing (1) and having two delivery chambers (11, 12), which extend on both sides of the end sides (3, 4) and each have circular cross sections, the delivery chambers (11, 12) have a communicating passage (13) between them, formed by an overlap of their cross sections. As a result, the liquid can flow without interference from one delivery chamber (11) into the other delivery chamber (12). One delivery chamber (11) is connected to an inlet duct, while the other delivery chamber (12) is connected to an outlet duct.Type: GrantFiled: March 4, 1999Date of Patent: May 15, 2001Assignee: Mannesmann VDO AGInventors: Hans-Dieter Wilhelm, Christoph Schmidt, Thomas Werner