Patents by Inventor Douglas R. Browning
Douglas R. Browning 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: 20220297591Abstract: A flatbed rolling tarp system is a tarp covered structure that retracts and rolls from front to rear and rear to front or a track that is installed on a flatbed trailer. It's only purpose is to cover cargo. My innovation is to integrate pulleys and related components with main bow(s) enabling driver/operator (using ropes from the ground) to pull tie-downs from one side of system, up and over pulleys then release them on opposite side of system. Pulleys will be swivelable, removable, relocatable, and lockable.Type: ApplicationFiled: April 1, 2022Publication date: September 22, 2022Inventor: Douglas R. Brown
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Patent number: 9693397Abstract: Apparatus is provided for inductively heat treating a circular surface of annular workpieces where at least one inductor pair is used to perform a scan induction heat treatment of the circular surface. Controlled movement of the inductors and application of quenchant is provided particularly at the initial and final heat treatment locations on the circular surface to enhance metallurgical uniformity of the annular workpiece at these locations. In combination with controlled movement of the inductors, a simultaneous power-frequency control scheme can be applied to the inductors during the heat treatment process with the apparatus.Type: GrantFiled: July 13, 2015Date of Patent: June 27, 2017Assignee: INDUCTOHEAT, INC.Inventors: Gary A. Doyon, Frank Andrä, Douglas R. Brown, Don L. Loveless, Valery I. Rudnev
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Publication number: 20150319810Abstract: Apparatus is provided for inductively heat treating a circular surface of annular workpieces where at least one inductor pair is used to perform a scan induction heat treatment of the circular surface. Controlled movement of the inductors and application of quenchant is provided particularly at the initial and final heat treatment locations on the circular surface to enhance metallurgical uniformity of the annular workpiece at these locations. In combination with controlled movement of the inductors, a simultaneous power-frequency control scheme can be applied to the inductors during the heat treatment process with the apparatus.Type: ApplicationFiled: July 13, 2015Publication date: November 5, 2015Inventors: Gary A. DOYON, Frank ANDRÄ, Douglas R. BROWN, Don L. LOVELESS, Valery I. RUDNEV
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Patent number: 9084297Abstract: Apparatus and method are provided for inductively heat treating a circular surface of annular workpieces where at least one inductor pair is used to perform a scan induction heat treatment of the circular surface. Controlled movement of the inductors and application of quenchant is provided particularly at the initial and final heat treatment locations on the circular surface to enhance metallurgical uniformity of the annular workpiece at these locations. In combination with controlled movement of the inductors, a simultaneous power-frequency control scheme can be applied to the inductors during the heat treatment process.Type: GrantFiled: April 13, 2011Date of Patent: July 14, 2015Assignee: INDUCTOHEAT, INC.Inventors: Gary A. Doyon, Frank Andrä, Douglas R. Brown, Don L. Loveless, Valery I. Rudnev
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Publication number: 20120279268Abstract: Roll forging of an annular article of manufacture is accomplished with electric induction heating of the workpiece simultaneously during the roll forging process as required to keep the workpiece at optimum forging temperature during the roll forging process.Type: ApplicationFiled: May 3, 2012Publication date: November 8, 2012Inventors: Don L. LOVELESS, Douglas R. BROWN, Joseph C. CERNY
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Patent number: 8247749Abstract: Large, non-unitarily forged shaft workpieces such as a crankshaft have successive shaft features inductively heated and forged without cool down between each sectional forging process. The temperature profile along the axial length of the next section of the shaft workpiece to be inductively heated and forged is measured prior to heating, and the induced heat energy along the axial length of the next section is dynamically adjusted responsive to the measured temperature profile to achieve a required pre-forge temperature distribution along the axial length of the next section prior to forging.Type: GrantFiled: July 3, 2010Date of Patent: August 21, 2012Assignee: Inductoheat, Inc.Inventors: Gary A. Doyon, Douglas R. Brown, Don L. Loveless, Valery I. Rudnev
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Patent number: 8222576Abstract: Apparatus and method are provided for induction heating of one or more components of a complex-shaped workpiece. The component is positioned within an opening formed by opposing pairs of arcuate coil structures formed in opposing inductor segments. One inductor segment is formed from electrically isolated inner and outer active inductor segments connected to one or more power supplies, while the other inductor segment is formed from electrically isolated inner and outer passive inductor segments that are magnetically coupled with respective inner and outer active inductor segments. Changing the output electrical parameters of the one or more power supplies controls the induction hardening along the transverse width of the workpiece with optional flux concentrators between opposing pairs of arcuate coil structures.Type: GrantFiled: January 16, 2010Date of Patent: July 17, 2012Assignee: Inductoheat, Inc.Inventors: Gary A. Doyon, Don L. Loveless, Douglas R. Brown, Valery I. Rudnev, Timothy G. Boussie, Glenville Colin Desmier
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Publication number: 20110248023Abstract: Apparatus and method are provided for inductively heat treating a circular surface of annular workpieces where at least one inductor pair is used to perform a scan induction heat treatment of the circular surface. Controlled movement of the inductors and application of quenchant is provided particularly at the initial and final heat treatment locations on the circular surface to enhance metallurgical uniformity of the annular workpiece at these locations. In combination with controlled movement of the inductors, a simultaneous power-frequency control scheme can be applied to the inductors during the heat treatment process.Type: ApplicationFiled: April 13, 2011Publication date: October 13, 2011Inventors: Gary A. DOYON, Frank ANDRÄ, Douglas R. BROWN, Don L. LOVELESS, Valery I. RUDNEV
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Publication number: 20110000905Abstract: Large, non-unitarily forged shaft workpieces such as a crankshaft have successive shaft features inductively heated and forged without cool down between each sectional forging process. The temperature profile along the axial length of the next section of the shaft workpiece to be inductively heated and forged is measured prior to heating, and the induced heat energy along the axial length of the next section is dynamically adjusted responsive to the measured temperature profile to achieve a required pre-forge temperature distribution along the axial length of the next section prior to forging.Type: ApplicationFiled: July 3, 2010Publication date: January 6, 2011Inventors: Gary A. DOYON, Douglas R. BROWN, Don L. LOVELESS, Valery I. RUDNEV
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Patent number: 7786285Abstract: This invention is directed to preparation and expression of synthetic genes encoding polypeptides containing protective epitopes of botulinum neurotoxin (BoNT). The invention is also directed to production of immunogenic peptides encoded by the synthetic genes, as well as recovery and purification of the immunogenic peptides from recombinant organisms. The invention is also directed to methods of vaccination against botulism using the expressed peptides.Type: GrantFiled: May 19, 2006Date of Patent: August 31, 2010Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Leonard A. Smith, Michael P. Byrne, John L. Middlebrook, Hugh Lapenotiere, Michael A. Clayton, Douglas R. Brown
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Publication number: 20100181305Abstract: Apparatus and method are provided for induction heating of one or more components of a complex-shaped workpiece. The component is positioned within an opening formed by opposing pairs of arcuate coil structures formed in opposing inductor segments. One inductor segment is formed from electrically isolated inner and outer active inductor segments connected to one or more power supplies, while the other inductor segment is formed from electrically isolated inner and outer passive inductor segments that are magnetically coupled with respective inner and outer active inductor segments. Changing the output electrical parameters of the one or more power supplies controls the induction hardening along the transverse width of the workpiece with optional flux concentrators between opposing pairs of arcuate coil structures.Type: ApplicationFiled: January 16, 2010Publication date: July 22, 2010Inventors: Gary A. DOYON, Don L. LOVELESS, Douglas R. BROWN, Valery I. RUDNEV, Timothy G. BOUSSIE, Glenville Colin DESMIER
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Patent number: 7324908Abstract: An embodiment of the invention generally pertains to a method of compensating for temperature variations in an eddy current sensor signal. The method may include the steps of receiving an initial signal from an eddy current sensor (ECS) in response to a conductive element passing the ECS and sensing an ECS temperature and an ECS board temperature. The method may also include determining a subset of correction coefficients based on the ECS temperature and the ECS board temperature and determining a temperature correction factor from the subset of correction coefficients. The method may then compute a temperature corrected signal from the initial signal and the temperature correction factor.Type: GrantFiled: December 5, 2006Date of Patent: January 29, 2008Assignee: General Dynamics Advanced Information Systems, Inc.Inventors: Douglas R. Browning, Victor R. Mishkevich, Richard T. Gieske
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Patent number: 7323868Abstract: An embodiment of the invention generally relates to a temperature-independent method of determining an engine health parameter, namely stand-off distance, between an eddy current sensor and a conductive element. The method includes receiving a signal from the eddy current sensor and demodulating a waveform from the received signal. The method also includes determining a predetermined set of substantially temperature-independent parameters from the waveform and determining the stand-off distance based on the predetermined set of substantially temperature-independent parameters.Type: GrantFiled: September 21, 2005Date of Patent: January 29, 2008Assignee: General Dynamics Advanced Information Systems, Inc.Inventors: Victor G. Mishkevich, Douglas R. Browning, Richard T. Gieske
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Patent number: 7214787Abstract: This invention is directed to preparation and expression of synthetic genes encoding polypeptides containing protective epitopes of botulinum neurotoxin (BoNT). The invention is also directed to production of immunogenic peptides encoded by the synthetic genes, as weel as recovery and purification of the immunogenic peptides from recombinant organisms. The invention is also directed to methods of vaccination against botulism using the expressed peptides.Type: GrantFiled: July 6, 2000Date of Patent: May 8, 2007Assignee: United States of America as Represented by the Secretary of the ArmyInventors: Leonard A. Smith, Michael P. Byrne, John L. Middlebrook, Hugh Lapenotiere, Michael A. Clayton, Douglas R. Brown
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Patent number: 7162384Abstract: An embodiment of the invention generally pertains to a method of compensating for temperature variations in an eddy current sensor signal. The method may include the steps of receiving an initial signal from an eddy current sensor (ECS) in response to a conductive element passing the ECS and sensing an ECS temperature and an ECS board temperature. The method may also include determining a subset of correction coefficients based on the ECS temperature and the ECS board temperature and determining a temperature correction factor from the subset of correction coefficients. The method may then compute a temperature corrected signal from the initial signal and the temperature correction factor.Type: GrantFiled: September 21, 2005Date of Patent: January 9, 2007Assignee: General Dynamics Advanced InformationInventors: Douglas R. Browning, Victor G. Mishkevich, Richard T. Gieske
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Patent number: 7081529Abstract: This invention is directed to preparation and expression of synthetic genes encoding polypeptides containing protective epitopes of botulinum neurotoxin (BoNT). The invention is also directed to production of immunogenic peptides encoded by the synthetic genes, as weel as recovery and purification of the immunogenic peptides from recombinant organisms. The invention is also directed to methods of vaccination against botulism using the expressed peptides.Type: GrantFiled: July 20, 2001Date of Patent: July 25, 2006Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Leonard A. Smith, Michael P. Byrne, John L. Middlebrook, Hugh Lapenotiere, Michael A. Clayton, Douglas R. Brown
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Publication number: 20030009025Abstract: This invention is directed to preparation and expression of synthetic genes encoding polypeptides containing protective epitopes of botulinum neurotoxin (BoNT). The invention is also directed to production of immunogenic peptides encoded by the synthetic genes, as weel as recovery and purification of the immunogenic peptides from recombinant organisms. The invention is also directed to methods of vaccination against botulism using the expressed peptides.Type: ApplicationFiled: July 20, 2001Publication date: January 9, 2003Inventors: Leonard A. Smith, Michael P. Byrne, John L. Middlebrook, Hugh Lapenotiere, Michael A. Clayton, Douglas R. Brown
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Patent number: 5558477Abstract: Boring bar vibration damping is improved by a novel use of the electromechanical properties of the piezoelectric actuator material. A negative capacitance shunt circuit is provided in which a voltage-controlled voltage-source continuously simulates a negative capacitance that is substantially equal in magnitude but opposite in phase to the capacitance of the piezoelectric material. The negative capacitance is shunted across the piezoelectric device, effectively compensating for the capacitance of the device across a broad frequency band. The voltages generated in the piezoelectric element in response to mechanical deformation induced by broadband vibrations of the structure during damping operations, may then be completely resistively dissipated, thereby enhancing the mechanical damping.Type: GrantFiled: December 2, 1994Date of Patent: September 24, 1996Assignee: Lucent Technologies Inc.Inventors: Douglas R. Browning, Woodson D. Wynn
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Patent number: 5325438Abstract: In an active control noise-cancelling muffler system, a substantially complete acoustic and mechanical decoupling of the noise-cancelling signal pipe from the gas exhaust pipe is achieved. The noise-cancelling signal delivery pipe is physically isolated and separate from the gas exhaust pipe, and is mounted separately. The outlet end of both pipes are essentially coplanar. Using pressure sensors on the tubes, the system also accurately and continuously electronically replicates the mixing of the exhaust noise and the noise-cancelling acoustic energy that goes on in the space immediately beyond the two outlets. This electronic signal is a useful alternative for a direct measure of the resultant two acoustic waves when they mix in the space beyond the tube outlets, and allows the system to continuously estimate the degree of success of noise cancellation without having to measure it directly when impractical.Type: GrantFiled: February 1, 1993Date of Patent: June 28, 1994Assignee: AT&T Bell LaboratoriesInventors: Douglas R. Browning, Michael A. Zuniga
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Patent number: 5033028Abstract: This disclosure describes apparatus and method for overcoming stroke limitations of moving coil reaction-mass vibration dampers, by recovering armature stroke displacement. The coil housing is selectively coupled or de-coupled to the vibrating structure. If, when the armature reaches its travel limit, sufficient damping energy has not been applied to the structure, the coil-housing assembly is decoupled from the structure while the armature is pulsed back to its zero displacement position. The housing then is re-coupled to the surface, having displaced some determinable distance from its previous location relative to the surface. Additional armature movement in the same direction as the previous armature stroke is applied, thereby generating the needed additional damping force. The resetting of the housing to its normal position vis-a-vis the vibrating structure can occur at a selected time in the damping force-generating cycle when reset does not impart an undesired reaction to the vibrating structure.Type: GrantFiled: December 27, 1989Date of Patent: July 16, 1991Assignee: AT&T Bell LaboratoriesInventor: Douglas R. Browning