Patents by Inventor Walter Hansen
Walter Hansen 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: 12268268Abstract: A bicycle helmet that fits over a surface of a head of a user generally includes a segment of flexible cell structures that form a radial honeycomb matrix movable between a folded condition where each side of the segment is disposed generally parallel and an expanded condition where the radial honeycomb matrix of the segment is configured to be expanded at least partially over the head of the user and arranged radially relative to the surface of the head of the user. The bicycle helmet includes a first and second side frame disposed respectively at the first and second ends of the honeycomb matrix.Type: GrantFiled: February 24, 2023Date of Patent: April 8, 2025Assignee: Membrain Safety Solutions, LLCInventors: Emerick Varga, Jack Queen, Kenneth B. Hertz, Jeffrey Jones, Isis Alexandra Shiffer, Walter Hansen
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Publication number: 20230248105Abstract: A bicycle helmet that fits over a surface of a head of a user generally includes a segment of flexible cell structures that form a radial honeycomb matrix movable between a folded condition where each side of the segment is disposed generally parallel and an expanded condition where the radial honeycomb matrix of the segment is configured to be expanded at least partially over the head of the user and arranged radially relative to the surface of the head of the user. The bicycle helmet includes a first and second side frame disposed respectively at the first and second ends of the honeycomb matrix.Type: ApplicationFiled: February 24, 2023Publication date: August 10, 2023Applicant: Membrain Safety Solutions, LLCInventors: Emerick Varga, Jack Queen, Kenneth B. Hertz, Jeffrey Jones, Isis Alexandra Shiffer, Walter Hansen
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Patent number: 11284184Abstract: A method of calibrating a feedback-based noise cancellation system of an ear device may involve obtaining a measured plant response of the ear device, obtaining a reference plant response value and determining a plant response variation between the reference plant response value and a value corresponding to the measured plant response. The method may involve obtaining a measured a coupler response of the ear device, obtaining a reference coupler response value and determining a coupler response variation between the reference coupler response value and a value corresponding to the measured coupler response. The method may involve determining, based at least in part on the plant response variation and the coupler response variation, a microphone signal gain correction factor and applying the microphone signal gain correction factor to ear device microphone signals that are input to a feedback loop of the feedback-based noise cancellation system.Type: GrantFiled: July 29, 2019Date of Patent: March 22, 2022Assignee: Dolby Laboratories Licensing CorporationInventors: Matthew Conrad Fellers, Louis D. Fielder, Douglas Walter Hansen, Joshua B. Lando, C. Phillip Brown, Rhonda J. Wilson
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Publication number: 20210204054Abstract: A method of calibrating a feedback-based noise cancellation system of an ear device may involve obtaining a measured plant response of the ear device, obtaining a reference plant response value and determining a plant response variation between the reference plant response value and a value corresponding to the measured plant response. The method may involve obtaining a measured a coupler response of the ear device, obtaining a reference coupler response value and determining a coupler response variation between the reference coupler response value and a value corresponding to the measured coupler response. The method may involve determining, based at least in part on the plant response variation and the coupler response variation, a microphone signal gain correction factor and applying the microphone signal gain correction factor to ear device microphone signals that are input to a feedback loop of the feedback-based noise cancellation system.Type: ApplicationFiled: July 29, 2019Publication date: July 1, 2021Applicant: Dolby Laboratories Licensing CorporationInventors: Matthew Conrad FELLERS, Louis D. FIELDER, Douglas Walter HANSEN, Joshua B. LANDO, C. Phillip BROWN, Rhonda J. WILSON
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Patent number: 8036414Abstract: This invention provides an audio speaker with improved physical safety isolation between a voice coil and other electrically live elements.Type: GrantFiled: December 21, 2007Date of Patent: October 11, 2011Inventors: John B. French, Douglas Walter Hansen
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Patent number: 7658835Abstract: A method is described for the electrolysis of an aqueous solution of hydrogen chloride or alkali metal chloride in an electrolysis cell. The cell includes at least of an anode half-element and an anode, a cathode half-element and a gas diffusion electrode as the cathode, and a cation exchange membrane for separating the anode half-element and the cathode half-element. A gas containing oxygen is supplied to the cathode half-element and excess gas containing oxygen is discharged from the cathode half-element. Excess gas containing oxygen discharged from the cathode half-element is subjected to catalytic oxidation of hydrogen.Type: GrantFiled: September 10, 2004Date of Patent: February 9, 2010Assignee: Bayer MaterialScience AGInventors: Fritz Gestermann, Richard Malchow, Walter Hansen, Gaby Sengstock
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Publication number: 20080118097Abstract: This invention provides an audio speaker with improved physical safety isolation between a voice coil and other electrically live elements.Type: ApplicationFiled: December 21, 2007Publication date: May 22, 2008Inventors: John B. French, Douglas Walter Hansen
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Patent number: 7362168Abstract: In a first aspect, the invention provides an audio amplifier. A regulator reference signal corresponding to an input audio signal is generated by regulator reference generator. A power signal is generated corresponding to the regulator reference signal by a voltage regulator. A compensation block also uses the input signal, or a delayed version of the input signal to generate a modulation control signal. A modulator generates a modulated signal in response to the modulation control signal. An output stage combines the power signal and the modulation signal to provide an output audio signal corresponding to the input audio signal. The compensation block may be a forward compensation block configured to compensate for characteristics of the regulator reference generator or the voltage regulator or both, and possibly other components of the amplifier. In other embodiments, the compensation block may be part of a feedback compensation loop.Type: GrantFiled: November 3, 2006Date of Patent: April 22, 2008Assignee: Audera International Sales Inc.Inventors: John B. French, Douglas Walter Hansen
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Patent number: 7329331Abstract: An electrolysis cell, suitable for the electrochemical production of chlorine from aqueous solutions of hydrogen chloride. The cell preferably comprises an anode space formed from an anode, an anode frame, and a back wall, the anode frame supporting the anode, and the anode space having an inlet and an outlet for the electrolyte, a cathode space formed from a current collector. The cell further preferably comprises a cathode frame and a back wall, the cathode frame supporting the current collector and the cathode space having an inlet and an outlet for the gas, a gas diffusion electrode arranged between anode and current collector and an cation exchange membrane arranged between anode and gas diffusion electrode, wherein the gas diffusion electrode is fixed on the current collector.Type: GrantFiled: September 19, 2002Date of Patent: February 12, 2008Assignee: Bayer MaterialScience AGInventors: Andreas Bulan, Fritz Gestermann, Manfred Marre, Walter Hansen, Michael Groβholz
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Patent number: 7128824Abstract: A method for the electrolysis of aqueous solutions of hydrogen chloride in order to produce chlorine, characterized in that the following process parameters are maintained for initial operation: the anode half-element is filled with a 5 to 20% strength by weight hydrochloric acid, the concentration of the hydrochloric acid is more than 5% by weight during initial operation, the volumetric flow of the hydrochloric acid through the anode half-element is set in such a way that, at the start of electrolysis, the velocity of the hydrochloric acid in the anode space is from 0.05 cm/s to 0.15 cm/s, the electrolysis is started with a current density of 0.5 to 2 kA/m2, and the current density is then increased continuously or discontinuously until the desired current density is reached.Type: GrantFiled: October 16, 2002Date of Patent: October 31, 2006Assignee: Bayer MaterialScience AGInventors: Andreas Bulan, Walter Hansen, Fritz Gestermann, Michael Grossholz, Hans-Dieter Pinter
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Publication number: 20050173257Abstract: An electrolysis cell, suitable for the electrochemical production of chlorine from aqueous solutions of hydrogen chloride. The cell preferably comprises an anode space formed from an anode, an anode frame, and a back wall, the anode frame supporting the anode, and the anode space having an inlet and an outlet for the electrolyte, a cathode space formed from a current collector. The cell further preferably comprises a cathode frame and a back wall, the cathode frame supporting the current collector and the cathode space having an inlet and an outlet for the gas, a gas diffusion electrode arranged between anode and current collector and an cation exchange membrane arranged between anode and gas diffusion electrode, wherein the gas diffusion electrode is fixed on the current collector.Type: ApplicationFiled: September 19, 2002Publication date: August 11, 2005Inventors: Andreas Bulan, Fritz Gestermann, Manfred Marre, Walter Hansen, Michael Grossholz
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Publication number: 20050056549Abstract: A method is described for the electrolysis of an aqueous solution of hydrogen chloride or alkali metal chloride in an electrolysis cell. The cell includes at least of an anode half-element and an anode, a cathode half-element and a gas diffusion electrode as the cathode, and a cation exchange membrane for separating the anode half-element and the cathode half-element. A gas containing oxygen is supplied to the cathode half-element and excess gas containing oxygen is discharged from the cathode half-element. Excess gas containing oxygen discharged from the cathode half-element is subjected to catalytic oxidation of hydrogen.Type: ApplicationFiled: September 10, 2004Publication date: March 17, 2005Applicant: Bayer MaterialScience AGInventors: Fritz Gestermann, Richard Malchow, Walter Hansen, Gaby Sengstock
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Publication number: 20040245117Abstract: The invention relates to a method for the electrolysis of aqueous solutions of hydrogen chloride, for producing chlorine by means of a gas-diffusion electrode in compliance with set operating parameters.Type: ApplicationFiled: April 23, 2004Publication date: December 9, 2004Inventors: Andreas Bulan, Walter Hansen, Fritz Gestermann, Michael Grossholz, Hans-Dieter Pinter
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Patent number: 4803497Abstract: A laser diode imagesetter having multiple resolution operating modes, includes means for stabilizing the optical output power from the semiconductor laser diode during the scan trace interval across a photosensitive material so as to maintain a high extinction ratio for the laser diode even when its driving current is changed to a different level in order to operate the imagesetter at a different resolution mode.Type: GrantFiled: August 31, 1987Date of Patent: February 7, 1989Assignee: Dr.-Ing. Rudolf Hell GmbHInventors: John A. Kennedy, Jr., Walter Hansen
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Patent number: 4027313Abstract: A photocomposing machine and font strip therefor are described which allow type designers to have the flexibility to design typographical characters which are kerned. The photocomposing machine is able to automatically kern those characters which are designed to be kerned. The automatic kerning is accomplished by intentionally offsetting each character's placement on the font strip to the left with respect to the machine's aperture, and providing an optical system in the photocomposing machine which intentionally offsets the projection of the font strip through the aperture of the machine to the right, thereby cancelling the offset of unkerned characters. Kerned characters are placed to the right on the font strip in order to allow the machine's optical system offset to overlap the image of kerned characters on the space normally reserved for the next character.Type: GrantFiled: June 18, 1975Date of Patent: May 31, 1977Assignee: Eltra CorporationInventors: Herbert Klepper, Walter Hansen, Joel S. Harris, Farrokh Golesorkhi