Patents by Inventor Benjamin Hagemann
Benjamin Hagemann 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: 20110252768Abstract: A method for the self-diagnosis of an exhaust gas probe (20). The exhaust gas probe (20) has at least one heating element (26). The method includes a modeled heat output PH is determined for the heating element (26) by means of a computer program comparing parameters of the gas stream with a measured heat output, and determining, when the parameters of the gas stream exceeds the measured heat output by more than a defined tolerance limit, that one of the exhaust gas probe (20) is defective, and an exhaust gas section (17) in which the exhaust gas probe (20) is installed is faulty.Type: ApplicationFiled: April 19, 2011Publication date: October 20, 2011Applicant: ROBERT BOSCH GMBHInventors: Thomas Baumann, Enno Baars, Johannes Grabis, Benjamin Hagemann, Bernhard Kamp
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Publication number: 20110177434Abstract: A method for production of a solid oxide fuel cell (SOFC) (1), having an electrolyte body (10) with a tubular structure, wherein at least one internal electrode (11) and one external electrode (12) are applied to the tubular electrolyte body, with the method having at least the following steps: provision of an injection molding core (13) on which at least one interconnector material (14) and the internal electrode (11) are mounted, arrangement of the injection molding core (13) in an injection mold (25a, 25b), injection molding of an electrolyte compound (10a) in order to form the electrolyte body (10), and removal of the injection molding core (13) in the form of a casting process with a lost core.Type: ApplicationFiled: January 19, 2011Publication date: July 21, 2011Applicant: ROBERT BOSCH GMBHInventors: Harald Maus, Uwe Glanz, Raphaelle Satet, Gudrun Oehler, Leonore Schwegler, Benjamin Hagemann, Alexander Bluthard, Erhard Hirth
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Publication number: 20110162436Abstract: A sensor element having a layered construction and configured to detect a physical property of a gas or a liquid includes a functional component situated in the interior, which functional component is connected electrically to a conductor element, which conductor element extends up to the outer surface or up into the surroundings of the sensor element. The sensor element has at least one sealing element which adjoins the functional component and/or the conductor element. The conductor element and the at least one sealing element are configured to be gas-tight at least regionally in the interior of the sensor element and are situated in such a way that the functional component is separated gas-tight from the surroundings of the sensor element.Type: ApplicationFiled: April 24, 2009Publication date: July 7, 2011Inventors: Thomas Wahl, Georg Rixecker, Steffen Polster, Uwe Glanz, Gudrun Oehler, Ulrich Eisele, Benjamin Hagemann, Alexander Bluthard, Frank Schnell, Jochen Rager, Petra Kuschel
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Patent number: 7368853Abstract: The invention relates to a piezoelectric motor comprising a piezoelectric component that is connected to a resonator and a two-dimensional resonator that interacts with a movable. element, the resonator having principal surfaces that are parallel to each other and that are also identical in shape and size. The invention further relates to methods for producing such piezoelectric motors, wherein the resonators are manufactured by cutting a profiled, extruded bar into lengths or by cutting, preferably by punching, from sheet metal having constant thickness. Finally, this invention relates to a method for exciting such a piezoelectric motor, wherein the excitation frequency or frequencies is/are generated by the control electronics as a function of time in response to the respective peak current and/or in response to the respective phase minimum between current and voltage and/or in response to the change in phase.Type: GrantFiled: October 22, 2004Date of Patent: May 6, 2008Assignee: Elliptec Resonant Actuator AktiengesellschaftInventors: Bjoern B. Magnussen, Peter C. Varadi, Kai Wolf, Benjamin Hagemann, Dieter A. Schuler, Erick M. Davidson
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Patent number: 7342347Abstract: The present invention relates to a drive system comprising at least one motor with at least one vibration generator each as well as at least one resonator each and a device driven by said motor, wherein the resonator comprises a contact area that cooperates with the surface of the device in order to drive said device.Type: GrantFiled: March 19, 2004Date of Patent: March 11, 2008Assignee: Elliptec Resonant Actuator AktiengesellschaftInventors: Bjoern Magnussen, Benjamin Hagemann, Dieter Schuler, Erick M. Davidson, Peter Varadi
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Patent number: 7173362Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: GrantFiled: September 8, 2004Date of Patent: February 6, 2007Inventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield, Erick M. Davidson
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Publication number: 20050127789Abstract: A piezoelectric motor has a piezoelectric element that is connected to a resonator, and a driven element that interacts with the piezoelectric motor. During the service life of the motor and resonator at least one operating state variable changes, and the change in operating variable is used to help avoid failure of the piezoelectric motor.Type: ApplicationFiled: October 15, 2004Publication date: June 16, 2005Inventors: Bjoern Magnussen, Peter Varadi, Kai Wolf, Benjamin Hagemann, Dieter Schuler, Erick Davidson
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Publication number: 20050127790Abstract: The invention relates to a piezoelectric motor comprising a piezoelectric component that is connected to a resonator and a two-dimensional resonator that interacts with a movable element, the resonator having principal surfaces that are parallel to each other and that are also identical in shape and size. The invention further relates to methods for producing such piezoelectric motors, wherein the resonators are manufactured by cutting a profiled, extruded bar into lengths or by cutting, preferably by punching, from sheet metal having constant thickness. Finally, this invention relates to a method for exciting such a piezoelectric motor, wherein the excitation frequency or frequencies is/are generated by the control electronics as a function of time in response to the respective peak current and/or in response to the respective phase minimum between current and voltage and/or in response to the change in phase.Type: ApplicationFiled: October 22, 2004Publication date: June 16, 2005Inventors: Bjoern Magnussen, Peter Varadi, Kai Wolf, Benjamin Hagemann, Dieter Schuler, Erick Davidson
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Patent number: 6870304Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: GrantFiled: March 8, 2001Date of Patent: March 22, 2005Assignee: Elliptec Resonant Actuator AGInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield, Erick M. Davidson
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Publication number: 20050023933Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: ApplicationFiled: September 8, 2004Publication date: February 3, 2005Inventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield, Erick Davidson
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Publication number: 20040256954Abstract: The present invention relates to a drive system comprising at least one motor with at least one vibration generator each as well as at least one resonator each and a device driven by said motor, wherein the resonator comprises a contact area that cooperates with the surface of the device in order to drive said device.Type: ApplicationFiled: March 19, 2004Publication date: December 23, 2004Inventors: Bjoern Magnussen, Benjamin Hagemann, Dieter Schuler, Erick M. Davidson, Peter Varadi
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Patent number: 6825592Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: GrantFiled: October 22, 2003Date of Patent: November 30, 2004Assignee: Elliptec Resonant Actuator AGInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield, Erick M. Davidson
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Publication number: 20040095040Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: ApplicationFiled: October 22, 2003Publication date: May 20, 2004Inventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield, Erick M. Davidson
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Patent number: 6690101Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: GrantFiled: March 8, 2001Date of Patent: February 10, 2004Assignee: Elliptec Resonant Actuator AGInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Dieter Schuler
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Patent number: 6664714Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: GrantFiled: March 8, 2001Date of Patent: December 16, 2003Assignee: Elliptec Resonant Actuator AGInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Erick Davidson
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Publication number: 20020050765Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: ApplicationFiled: March 8, 2001Publication date: May 2, 2002Applicant: Siemens AktiengessellschaftInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Erick Davidson
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Publication number: 20020038986Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: ApplicationFiled: March 8, 2001Publication date: April 4, 2002Applicant: Siemens AktiengessellschaftInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Dieter Schuler
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Publication number: 20020038987Abstract: A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven element to move the driven element in a first direction. A second frequency excites the same piezoelectric to cause two vibration modes of the resonator producing a second elliptical motion in a second direction at the selected contacting portion to move the driven element in a second direction. The piezoelectric is preloaded in compression by the resonator. Walls of the resonator are stressed past their yield point to maintain the preload. Specially shaped ends on the piezoelectric help preloading. The piezoelectric can send or receive vibratory signals through the driven element to or from sensors to determine the position of the driven element relative to the piezoelectric element or resonator.Type: ApplicationFiled: March 8, 2001Publication date: April 4, 2002Applicant: Seimens AktiengessellschaftInventors: Bjoern Magnussen, Peter Varadi, Benjamin Hagemann, Steven Schofield