Patents by Inventor Douglas A. Swanson
Douglas A. Swanson 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: 20170067530Abstract: Redundant active vibration and noise control systems and methods are provided, which include safety-critical systems and methods. In one embodiment, a safety-critical active vibration control system (SCAVCS) is provided, which includes a plurality of digital buses, a force generator, at least one sensor and at least one system parameter. The at least one force generator is in electronic communication with at least two digital buses. The force generator includes a pair of unbalanced masses, at least one motor, at least one microprocessor, at least one speed sensor, at least one accelerometer, and at least one power input. The at least one sensor is in electronic communication with each of the digital buses and with each of the microprocessors. The at least one system parameter is in electronic communication with each of the digital buses and each of the microprocessors.Type: ApplicationFiled: December 12, 2014Publication date: March 9, 2017Inventor: Douglas A. SWANSON
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Patent number: 9073627Abstract: A rotary wing aircraft including a vehicle vibration control system.Type: GrantFiled: December 17, 2010Date of Patent: July 7, 2015Assignee: LORD CorporationInventors: Mark R. Jolly, Andrew D. Meyers, Daniel Mellinger, Douglas E. Ivers, Askari Badre-Alam, Douglas A. Swanson, Russell E. Altieri
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Patent number: 8534600Abstract: An aircraft vehicular assembly is provided that includes a nonelastomeric outer tubular member having an inner axial center bore with a tubular cylindrical frictional interface contiguous smooth inner surface segment, and a nonelastomeric inner member having an outer bonding surface segment. The nonelastomeric inner member is rotationally received in the outer member inner axial center bore with the nonelastomeric inner strut member rotatable within said outer member. The assembly includes an elastomer encompassing the nonelastomeric inner strut member outer bonding surface segment. The elastomer has an inner bonding surface segment and an outer grooved elastomer surface, the inner bonding surface segment is bonded to the nonelastomeric inner member outer bonding surface segment.Type: GrantFiled: August 10, 2009Date of Patent: September 17, 2013Assignee: Lord CorporationInventors: Paul J. Bachmeyer, Douglas A. Swanson, Bryan J. Pittman, Scott K. Thompson, Doug A. Hodgson
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Patent number: 8272592Abstract: A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system. The resonant actuator electronic control system provides an electrical drive current to the resonant actuator to drive the resonant actuator about the resonant frequency when commanded by a received command signal. The resonant actuator has a feedback output with the feedback output fed back into the resonant actuator electronic control system wherein the resonant actuator electronic control system adjusts the electrical drive current based on the resonant actuator feedback output to generate the vibration canceling force.Type: GrantFiled: December 17, 2009Date of Patent: September 25, 2012Assignee: Lord CorporationInventors: Askari Badre-Alam, Douglas Swanson, Jeffrey Cranmer
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Publication number: 20120136533Abstract: A rotary wing aircraft including a vehicle vibration control system.Type: ApplicationFiled: December 17, 2010Publication date: May 31, 2012Inventors: Mark R. Jolly, Andrew D. Meyers, Daniel Mellinger, Douglas E. Ivers, Askari Badre-Alam, Douglas A. Swanson, Russell E. Altieri
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Patent number: 8162606Abstract: A rotary wing aircraft including a vehicle vibration control system. The vehicle vibration control system includes a rotating hub mounted vibration control system, the rotating hub mounted vibration control system mounted to the rotating rotary wing hub with the rotating hub mounted vibration control system rotating with the rotating rotary wing hub.Type: GrantFiled: April 7, 2009Date of Patent: April 24, 2012Assignee: Lord CorporationInventors: Mark R. Jolly, Andrew D. Meyers, Daniel Mellinger, Douglas E. Ivers, Askari Badre-Alam, Douglas A. Swanson, Russell E. Altieri
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Publication number: 20110208361Abstract: A digital processing link for a vibration control system collects sensor signals at a transfer station and combines the sensor signals into a collective signal that is transmitted under a digital communications protocol to a base station. The sensor signals are separated at the base station and individually processed to produce one or more output control signals to actuators for counteracting the measured vibration.Type: ApplicationFiled: September 4, 2009Publication date: August 25, 2011Inventors: Stephen F. Hildebrand, Douglas Swanson, Matthew Ferguson, Matthew A. Smith
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Publication number: 20100090054Abstract: A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system. The resonant actuator electronic control system provides an electrical drive current to the resonant actuator to drive the resonant actuator about the resonant frequency when commanded by a received command signal. The resonant actuator has a feedback output with the feedback output fed back into the resonant actuator electronic control system wherein the resonant actuator electronic control system adjusts the electrical drive current based on the resonant actuator feedback output to generate the vibration canceling force.Type: ApplicationFiled: December 17, 2009Publication date: April 15, 2010Inventors: ASKARI BADRE-ALAM, Douglas Swanson, Jeffrey Cranmer
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Patent number: 7686246Abstract: A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system. The resonant actuator electronic control system provides an electrical drive current to the resonant actuator to drive the resonant actuator about the resonant frequency when commanded by a received command signal. The resonant actuator has a feedback output with the feedback output fed back into the resonant actuator electronic control system wherein the resonant actuator electronic control system adjusts the electrical drive current based on the resonant actuator feedback output to generate the vibration canceling force.Type: GrantFiled: November 19, 2007Date of Patent: March 30, 2010Assignee: Lord CorporationInventors: Askari Badre-Alam, Douglas Swanson, Jeffrey Cranmer
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Publication number: 20100034655Abstract: A rotary wing aircraft including a vehicle vibration control system. The vehicle vibration control system includes a rotating hub mounted vibration control system, the rotating hub mounted vibration control system mounted to the rotating rotary wing hub with the rotating hub mounted vibration control system rotating with the rotating rotary wing hub.Type: ApplicationFiled: April 7, 2009Publication date: February 11, 2010Inventors: Mark R. JOLLY, Andrew D. MEYERS, Daniel MELLINGER, Douglas E. IVERS, Askari BADRE-ALAM, Douglas A. SWANSON, Russell E. ALTIERI
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Publication number: 20090294583Abstract: An aircraft vehicular assembly is provided that includes a nonelastomeric outer tubular member having an inner axial center bore with a tubular cylindrical frictional interface contiguous smooth inner surface segment, and a nonelastomeric inner member having an outer bonding surface segment. The nonelastomeric inner member is rotationally received in the outer member inner axial center bore with the nonelastomeric inner strut member rotatable within said outer member. The assembly includes an elastomer encompassing the nonelastomeric inner strut member outer bonding surface segment. The elastomer has an inner bonding surface segment and an outer grooved elastomer surface, the inner bonding surface segment is bonded to the nonelastomeric inner member outer bonding surface segment.Type: ApplicationFiled: August 10, 2009Publication date: December 3, 2009Applicant: LORD CORPORATIONInventors: Paul Joseph Bachmeyer, Douglas A. Swanson, Bryan J. Pittman, Scott K. Thompson, Doug A. Hodgson
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Patent number: 7571876Abstract: An aircraft vehicular assembly is provided that includes a nonelastomeric outer tubular member having an inner axial center bore with a tubular cylindrical frictional interface contiguous smooth inner surface segment, and a nonelastomeric inner member having an outer bonding surface segment. The nonelastomeric inner member is rotationally received in the outer member inner axial center bore with the nonelastomeric inner strut member rotatable within said outer member. The assembly includes an elastomer encompassing the nonelastomeric inner strut member outer bonding surface segment. The elastomer has an inner bonding surface segment and an outer grooved elastomer surface, the inner bonding surface segment is bonded to the nonelastomeric inner member outer bonding surface segment.Type: GrantFiled: March 15, 2006Date of Patent: August 11, 2009Assignee: Lord CorporationInventors: Paul Joseph Bachmeyer, Douglas A. Swanson, Bryan J. Pittman, Scott K. Thompson, Doug A. Hodgson
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Publication number: 20090152396Abstract: An aircraft vehicular assembly is provided that includes a nonelastomeric outer tubular member having an inner axial center bore with a tubular cylindrical frictional interface contiguous smooth inner surface segment, and a nonelastomeric inner member having an outer bonding surface segment. The nonelastomeric inner member is rotationally received in the outer member inner axial center bore with the nonelastomeric inner strut member rotatable within said outer member. An elastomer encompasses the nonelastomeric inner strut member outer bonding surface segment. The elastomer has an inner bonding surface segment and an outer grooved elastomer surface, the inner bonding surface segment is bonded to the nonelastomeric inner member outer bonding surface segment.Type: ApplicationFiled: December 13, 2007Publication date: June 18, 2009Inventors: Paul Joseph BACHMEYER, Douglas A. SWANSON, Bryan J. PITTMAN, Scott K. THOMPSON, Doug HODGSON, Darrin M. JONES, Nicholas V. ANDERSON
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Publication number: 20080179451Abstract: A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system. The resonant actuator electronic control system provides an electrical drive current to the resonant actuator to drive the resonant actuator about the resonant frequency when commanded by a received command signal. The resonant actuator has a feedback output with the feedback output fed back into the resonant actuator electronic control system wherein the resonant actuator electronic control system adjusts the electrical drive current based on the resonant actuator feedback output to generate the vibration canceling force.Type: ApplicationFiled: November 19, 2007Publication date: July 31, 2008Inventors: Askari Badre-Alam, Douglas Swanson, Jeffrey Cranmer
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Publication number: 20070298006Abstract: Dendritic polymers with enhanced amplification and interior functionality are disclosed. These dendritic polymers are made by use of fast, reactive ring-opening chemistry (or other fast reactions) combined with the use of branch cell reagents in a controlled way to rapidly and precisely build dendritic structures, generation by generation, with cleaner chemistry, often single products, lower excesses of reagents, lower levels of dilution, higher capacity method, more easily scaled to commercial dimensions, new ranges of materials, and lower cost. The dendritic compositions prepared have novel internal functionality, greater stability (e.g., thermal stability and less or no reverse Michael's reaction), and reach encapsulation surface densities at lower generations. Unexpectedly, these reactions of polyfunctional branch cell reagents with polyfunctional cores do not create cross-linked materials.Type: ApplicationFiled: December 21, 2005Publication date: December 27, 2007Applicant: Dendritic Nanotechnologies, Inc.Inventors: Donald Tomalia, Douglas Swanson, Baohua Huang, Veera Pulgam, Sonke Svenson, Lori Reyna, Michael Zhuravel, Abhay Chauhan, Cordell DeMattei, Joseph Heinzelmann
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Publication number: 20070244296Abstract: Poly(ester-acrylate) and poly(ester/epoxide) dendrimers. These materials can be synthesized by utilizing the so-called “sterically induced stoichiometric” principles. The preparation of the dendrimers is carried out by reacting precursor amino/polyamino-functional core materials with various branch cell reagents. The branch cell reagents are dimensionally large, relative to the amino/polyamino-initiator core and when reacted, produce generation=1 dendrimers directly in one step. There is also a method by which the dendrimers can be stabilized and that method is the reaction of the dendrimers with surface reactive molecules to pacify the reactive groups on the dendrimers.Type: ApplicationFiled: April 20, 2005Publication date: October 18, 2007Applicant: Dendritic Nanotechnologies, Inc.Inventors: Donald Tomalia, Douglas Swanson, Baohua Huang, Veera Pulgam
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Publication number: 20070073004Abstract: Methods of providing hyperbranched polymers by polymerization of appropriate AB2 monomers derived from the reaction of tris-(2-aminoethyl) amine and various other materials, namely, succinic anhydride, methyl acrylate, and dimethyl ita-conate.Type: ApplicationFiled: September 10, 2004Publication date: March 29, 2007Applicant: DENDRITIC NANOTECHNOLOGIES INC.Inventors: Donald Tomalia, Douglas Swanson
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Patent number: 7176363Abstract: An inbred maize line, designated PH6WG, the plants and seeds of inbred maize line PH6WG, methods for producing a maize plant, either inbred or hybrid, produced by crossing the inbred maize line PH6WG with itself or with another maize plant, and hybrid maize seeds and plants produced by crossing the inbred line PH6WG with another maize line or plant and to methods for producing a maize plant containing in its genetic material one or more transgenes and to the transgenic maize plants produced by that method. This invention also relates to inbred maize lines derived from inbred maize line PH6WG, to methods for producing other inbred maize lines derived from inbred maize line PH6WG and to the inbred maize lines derived by the use of those methods.Type: GrantFiled: January 29, 2004Date of Patent: February 13, 2007Assignee: Pioneer Hi-Bred International, Inc.Inventor: Brian Douglas Swanson
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Publication number: 20060278755Abstract: An aircraft vehicular assembly is provided that includes a nonelastomeric outer tubular member having an inner axial center bore with a tubular cylindrical frictional interface contiguous smooth inner surface segment, and a nonelastomeric inner member having an outer bonding surface segment. The nonelastomeric inner member is rotationally received in the outer member inner axial center bore with the nonelastomeric inner strut member rotatable within said outer member. The assembly includes an elastomer encompassing the nonelastomeric inner strut member outer bonding surface segment. The elastomer has an inner bonding surface segment and an outer grooved elastomer surface, the inner bonding surface segment is bonded to the nonelastomeric inner member outer bonding surface segment.Type: ApplicationFiled: March 15, 2006Publication date: December 14, 2006Inventors: Paul Bachmeyer, Douglas Swanson, Bryan Pittman, Scott Thompson, Doug Hodgson
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Publication number: 20060160988Abstract: Heterocycle terminated dendritic polymers. More specifically, the production of 2-pyrrolidone, 2-piperidone, 2-aza-cycloheptanone or 2-azetidinone-terminated dendritic polymers obtained by reacting precursor primary amine, (e.g., —NH2)-terminated dendritic polymers with certain functionalized methacrylate reagents to produce new and novel dendritic polymers terminated with ester substituted 2-pyrrolidone, 2-piperidone, 2 aza-cycloheptanone or 2-azetidinone groups.Type: ApplicationFiled: January 29, 2004Publication date: July 20, 2006Inventors: Donald Tomalia, Douglas Swanson, Baohua Huang