Patents by Inventor Christian Bohm
Christian Bohm 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: 20070105009Abstract: The invention relates to a method and a device for monitoring the fuel supply of a fuel cell system and for protecting said fuel cell system against damage or destruction, if no fuel or insufficient fuel is supplied to the fuel cell system. If the flow of fuel is insufficient for supplying fuel to the fuel cell system or if the fuel reserve falls below a predetermined value, a signal will be output.Type: ApplicationFiled: April 22, 2004Publication date: May 10, 2007Inventors: Volker Harbusch, Christoph Sonntag, Jens Muller, Marcus Preissner, Peter Rebenseifner, Kurt Rothkopf, Christian Bohm
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Publication number: 20070084868Abstract: The invention relates to a closure device for a container for liquid fuel, which irrespective of the orientation of the container ensures pressure equalization between a gas space of the container and the outside, furthermore preventing liquid from being unintentionally emitted and in addition facilitating liquid removal without having to remove the closure device.Type: ApplicationFiled: July 9, 2004Publication date: April 19, 2007Inventors: Markus Huber, Christian Bohm, Jens Muller
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Patent number: 7172057Abstract: Vibration damper comprising a piston rod, which is guided with freedom of axial movement in a damping medium-filled cylinder and which carries a piston, which divides the cylinder into two working spaces. At least one of the two working spaces has a flow connection leading to a housing, in which a separating element separates at least one chamber from one of the two working spaces, where the volume of the minimum of one chamber in the housing has a size which is variable within defined limits. The separating element executes relative motion with respect to the housing, and is located in a permanent position with respect to the piston rod, whereas the housing is movable with respect to the piston rod.Type: GrantFiled: December 17, 2003Date of Patent: February 6, 2007Assignee: ZF Sachs AGInventors: Frank Gundermann, Joachim Kühnel, Christian Böhm, Heinz-Joachim Gilsdorf
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Publication number: 20060286415Abstract: The invention relates to a method for controlling the fluid balance in an anode circuit of a fuel cell system. In this method, at least the gases discharged on the cathode side are cooled in a condensing device in order to obtain a condensed liquid, and the condensed liquid is fed to the anode circuit of the fuel cell system. It further relates to a fuel cell system designed according to the principles of the inventive method.Type: ApplicationFiled: May 16, 2003Publication date: December 21, 2006Applicant: SFC SMART FUEL CELL AGInventors: Jens Muller, Marcus Preissner, Christian Bohm, Volker Harbusch
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Patent number: 7104369Abstract: A piston rod with a piston is installed with freedom of axial movement in a damping medium-filled cylinder, where, as a function of the stroke position of the piston, a bypass connects the two working spaces separated from each other by the piston. The piston has at least one through-channel for at least one flow direction, which channel is at least partially covered on the outlet side by at least one valve disk, so that a first pressure-actuated surface to which pressure can be applied in the opening direction is present on the valve disk. In addition to the first pressure-actuated surface, the valve disk has a second pressure-actuated surface, which is separated from the first when the valve disk is closed and which can be actuated via the bypass, in which case the effects of the two pressure-actuated surfaces are additive.Type: GrantFiled: September 22, 2004Date of Patent: September 12, 2006Assignee: ZF Friedrichshafen AGInventors: Steffen Heyn, Frank Gundermann, Christian Böhm, Bernd Zeissner, Manfred Grundei
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Publication number: 20060088753Abstract: The invention relates to a sealing frame (50) for fuel cell stacks having an alternating arrangement of flow plates (10) and electrolytic facilities (20) and cathode and anode regions formed between the flow plates (10) and the electrolytic facilities (20), wherein the sealing frame (50) is formed such that it is suited for installation between the flow plates (10) and ensures the mutual sealing of the cathode regions and the anode regions,Type: ApplicationFiled: January 15, 2003Publication date: April 27, 2006Inventors: Manfred Stefener, Christian Bohm, Markus Huber, Volker Harbusch
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Publication number: 20060081130Abstract: The invention relates to a fluid separating device with a lower section with a fluid feeding device and a liquid discharging device, an upper section with a fluid feeding device and a gas discharging device, a contact device which is constructed in such a manner that gas, which rises from the lower section into the upper section, comes into contact with liquid which sinks from the upper section into the lower section. Thereby, the rising gases can be depleted of components which are soluble in said liquid. Furthermore, a measuring device for determining the quantity of liquid and/or the alterations thereof is provided.Type: ApplicationFiled: May 19, 2003Publication date: April 20, 2006Applicant: SFC SMART FUEL CELL AGInventors: Jens Muller, Volker Harbusch, Markus Huber, Christian Bohm, Kurt Rothkopf, Manfred Stefener
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Publication number: 20050249985Abstract: The present invention relates to a hybrid energy source (current/voltage source), wherein a fuel cell device and an energy storing device, e.g. a battery and/or a capacitor, are directly interconnected in parallel.Type: ApplicationFiled: June 13, 2003Publication date: November 10, 2005Applicant: SFC Smart Fuel Cell AGInventors: Jens Muller, Kurt Rothkoof, Christoph Sonntag, Christian Bohm, Peter Rabenseifner
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Publication number: 20050061592Abstract: A piston rod with a piston is installed with freedom of axial movement in a damping medium-filled cylinder, where, as a function of the stroke position of the piston, a bypass connects the two working spaces separated from each other by the piston. The piston has at least one through-channel for at least one flow direction, which channel is at least partially covered on the outlet side by at least one valve disk, so that a first pressure-actuated surface to which pressure can be applied in the opening direction is present on the valve disk. In addition to the first pressure-actuated surface, the valve disk has a second pressure-actuated surface, which is separated from the first when the valve disk is closed and which can be actuated via the bypass, in which case the effects of the two pressure-actuated surfaces are additive.Type: ApplicationFiled: September 22, 2004Publication date: March 24, 2005Inventors: Steffen Heyn, Frank Gundermann, Christian Bohm, Bernd Zeissner, Manfred Grundei
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Publication number: 20040163906Abstract: Vibration damper comprising a piston rod, which is guided with freedom of axial movement in a damping medium-filled cylinder and which carries a piston, which divides the cylinder into two working spaces. At least one of the two working spaces has a flow connection leading to a housing, in which a separating element separates at least one chamber from one of the two working spaces, where the volume of the minimum of one chamber in the housing has a size which is variable within defined limits. The separating element executes relative motion with respect to the housing, and is located in a permanent position with respect to the piston rod, whereas the housing is movable with respect to the piston rod.Type: ApplicationFiled: December 17, 2003Publication date: August 26, 2004Applicant: ZF Sachs AGInventors: Frank Gundermann, Joachim Kuhnel, Christian Bohm, Heinz-Joachim Gilsdorf
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Patent number: 5870153Abstract: A comb filter for use in a video decoder is described. The comb filter includes a line memory for storing as successive pairs of U and V samples of a decoded video signal corresponding to a previous horizontal line of video information and a line memory for storing a second previous horizontal line of video information. The filter also includes a circuit to calculate an average value of both U and V from a previous sample and a corresponding sample from a previous line. The filter also includes a circuit for calculating a correction term for each one of the averages. The correction term is calculated from the opposite color component as was used to calculate the average value.Type: GrantFiled: May 30, 1997Date of Patent: February 9, 1999Assignee: Analog Devices, Inc.Inventors: Brian P. Murray, Christian Bohm, Timothy Cummins
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Patent number: 5784120Abstract: A video decoder is provided wherein digitized samples of an input video signal are produced at a fixed sampling rate and, from such digitized samples, a fixed number of re-sampled digitized samples are produced for each detected sync pulse included in the video signal. The re-sampled digitized samples are stored in a buffer memory and are retrieved from such buffer memory at a rate synchronized to the sync pulse. With such an arrangement, the analog to digital converter operates at a fixed sampling rate, and overflow situations are avoided.Type: GrantFiled: May 31, 1996Date of Patent: July 21, 1998Assignee: Analog Devices, Inc.Inventors: Timothy Cummins, Brian P. Murray, Christian Bohm
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Patent number: 5584910Abstract: A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner.Type: GrantFiled: October 20, 1993Date of Patent: December 17, 1996Assignees: Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology, Voest-Alpine Industrieanlagenbau GmbHInventors: Werner Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Bohm
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Patent number: 5535991Abstract: A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner.Type: GrantFiled: June 5, 1995Date of Patent: July 16, 1996Assignees: Voest-Alpine Industrieanlagenbau GmbH, Research Institute of Industrial Science & Technology, Incorporated FoundationInventors: Werner Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Bohm
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Patent number: 5534046Abstract: A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner.Type: GrantFiled: June 5, 1995Date of Patent: July 9, 1996Assignees: Voest-Alpine Industrieanlagenbau GmbH, Research Institute of Industrial Science & Technology, Incorporated FoundationInventors: Werner Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Bohm
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Patent number: 5480070Abstract: A conveying arrangement for the dosed conveyance of bulk material from one metallurgical vessel into another through a conveying channel. The conveying channel has an entry opening and a discharge opening. A conveyor worm is rotatably located in the conveying channel, extending at least from the entry opening to the discharge opening and including a first flight formed by a plurality of paddles. In order to be able to configure the conveyor worm as short as possible and to minimize gas streaming through the conveying channel, the conveyor worm, on its end associated with the discharge opening, has a second flight that is formed by a continuous helix extending at least over half a convolution.Type: GrantFiled: July 7, 1993Date of Patent: January 2, 1996Assignee: Deutsche Voest-Alpine Industrieanlagenbau GmbHInventors: Felix Wallner, Leopold W. Kepplinger, Christian Bohm