Patents by Inventor David Spence
David Spence 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: 10433525Abstract: An illuminated dog belt specifically adapted to be secured to or worn around a back and chest, rearward of the front legs, is presented herein. The belt includes an elongated LED or light strip positioned in a manner to shine light through a translucent or at least partially transparent main body portion. A strap may be disposed through one or more strap retention openings and secured around the animal. The strap includes an amount of lengthwise or longitudinal elasticity for disposing at least a portion of the strap substantially pressed against the chest of an animal in a position rearward of the animal's front legs. In this manner, the main body portion and the LEDs or light strip may be disposed proximate to a portion of the animal's back, also in a position rearward of the animal's neck or collar.Type: GrantFiled: March 17, 2017Date of Patent: October 8, 2019Inventor: David A. Spence
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Patent number: 9938669Abstract: A regulator moldboard and grader blade assembly includes a moldboard having at least one transversely extending pin, the pin having a notch with a surface inclined toward the moldboard. At least one grader blade has at least one mounting opening having a flared surface complementary to the notch so that the blade is hangable on the pin so that the notch draws the blade against the moldboard as a fastener tightens the blade to the moldboard.Type: GrantFiled: September 16, 2015Date of Patent: April 10, 2018Assignee: NORDCO INC.Inventors: James William Boyd, David A. Spence, Justin Jerome Pipol, Michael David Thompson
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Patent number: 9371991Abstract: An apparatus and process for vaporizing and, optionally, igniting a liquid fuel, preferably, a distillate fuel. The apparatus includes the following components: a heat-conductive reticulated screen positioned within a chamber; a first inlet path into the chamber for delivering a liquid fuel onto the screen; a second inlet path into the chamber for contacting an oxidant with the screen and fuel; a means for heating the screen to a temperature sufficient to vaporize and, optionally, ignite the liquid fuel; and a recuperator in fluid communication with the chamber for transferring heat from the chamber to the second inlet path. The apparatus is suitably employed in compact and portable oxidation reactors, for example, in external combustion engines, catalytic partial oxidation reformers, and hybrid combustors operating in flame and/or catalytic modes.Type: GrantFiled: January 18, 2012Date of Patent: June 21, 2016Assignee: PRECISION COMBUSTION, INC.Inventors: Richard Mastanduno, David Spence, Subir Roychoudhury, Bruce Crowder
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Publication number: 20160108582Abstract: A regulator moldboard and grader blade assembly is provided and includes a moldboard having at least one transversely extending pin, the pin having a notch with a surface inclined toward the moldboard. At least one grader blade has at least one mounting opening having a flared surface complementary to the notch so that the blade is hangable on the pin so that the notch draws the blade against the moldboard as a fastener tightens the blade to the moldboard.Type: ApplicationFiled: September 16, 2015Publication date: April 21, 2016Inventors: James William BOYD, David A. SPENCE, Justin Jerome PIPOL, Michael David Thompson
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Publication number: 20160045381Abstract: Methods and systems are provided that decrease the time and distance from point of wounding to definitive medical care through integrated and specialized soldier survival medical kits and modules. These modules are mission-ready and usable out of the box, easily mission-configured and deployed by tactical operators to any operational location to ensure life saving measures can be rapidly and effectively executed if the need arises. They avoid unnecessary assembly and may involve no or minimal assembly. They make medical care items and supplies easily accessible, while minimizing encumbrances. They include the right equipment positioned in the right places for accessibility, and increase efficiency in use and shipment, and the time savings may save lives. Each module is designed to enable the operator to get the most out of the equipment on hand. Items are specifically chosen and packed in a way that is most efficient, easily accessible, and easily packed to reduce time and effort of use.Type: ApplicationFiled: August 11, 2015Publication date: February 18, 2016Applicant: TRIBALCO, LLCInventor: David Spence
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Patent number: 9102531Abstract: A method is provided for controlling the operating temperature of a catalytic reactor using a closed-loop system that provides for varying the reactor input and other operating parameters in order to maintain the operating temperature of the reactor at or near the initial setpoint temperature for operation of the reactor. In one example, maximum and minimum operating temperatures with a catalytic partial oxidation reactor are controlled, as well as maintaining control over the corresponding minimum required ratio of oxygen atoms to carbon atoms, such that the operating temperature within the reactor is maintained below the material limits but above threshold temperatures for coking.Type: GrantFiled: September 13, 2012Date of Patent: August 11, 2015Assignee: PRECISION COMBUSTION, INC.Inventors: Subir Roychoudhury, Joel M DesJardins, David Spence, Richard Mastanduno, Dennis E. Walsh, Lisa Burns
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Publication number: 20150083914Abstract: A railway reference machine is provided for surveying and aligning a railroad track, and includes a collapsible projector assembly having a pusher buggy assembly, and a lifting device. A plurality of projectors is mounted to a projector cart. The pusher buggy assembly has extendable and retractable linkage sections such that the linkage sections are stackable and nestable within a space defined by the lifting device and the projector cart. At one end, the pusher buggy assembly is connected to the projector cart and at an opposite end is connected to the lifting device such that the projector cart pivots upwardly about a pivot point to rest the projector assembly in a space defined by a chassis being dimensional for supporting the reference machine, and pivots downwardly about the pivot point to lower the projector assembly on the railroad track.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Inventor: David A. Spence
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Patent number: 8784515Abstract: A process of catalytic partial oxidation of a hydrocarbon fuel with an oxidant to produce partially-oxidized reaction products including hydrogen, with simultaneous in-situ coke removal. The process involves feeding a hydrocarbon fuel and an oxidant to a reactor in a fuel-rich feed ratio; reacting the fuel and oxidant for a fuel-rich cycle-time so as to produce a partially-oxidized reaction product; varying the fuel feed, or the oxidant feed, or both feeds to produce a fuel-lean feed to the reactor; maintaining the fuel-lean feed for a fuel-lean cycle-time sufficient to reduce coke deposits while maintaining a substantially constant yield of partially-oxidized reaction product; and alternating between the fuel-rich and fuel-lean operating cycles.Type: GrantFiled: October 14, 2010Date of Patent: July 22, 2014Assignees: Precision Combustion, Inc., Honda Motor Co., Ltd.Inventors: Subir Roychoudhury, Richard Mastanduno, David Spence, Jun Iwamoto, Go Motohashi
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Publication number: 20130266903Abstract: An apparatus and process for vaporizing and, optionally, igniting a liquid fuel, preferably, a distillate fuel. The apparatus includes the following components: a heat-conductive reticulated screen positioned within a chamber; a first inlet path into the chamber for delivering a liquid fuel onto the screen; a second inlet path into the chamber for contacting an oxidant with the screen and fuel; a means for heating the screen to a temperature sufficient to vaporize and, optionally, ignite the liquid fuel; and a recuperator in fluid communication with the chamber for transferring heat from the chamber to the second inlet path. The apparatus is suitably employed in compact and portable oxidation reactors, for example, in external combustion engines, catalytic partial oxidation reformers, and hybrid combustors operating in flame and/or catalytic modes.Type: ApplicationFiled: January 18, 2012Publication date: October 10, 2013Applicant: Precision Combustion, Inc.Inventors: Richard Mastanduno, David Spence, Subir Roychoudhury, Bruce Crowder
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Patent number: 8439990Abstract: An apparatus for fuel reforming is provided that utilizes pulsed injectors for a fuel flow controller and an air flow controller, and the injectors are integrated with an atomizing mixer thereby producing a fuel-air mixture having an O/C Ratio which, in turn, is passed to a Catalytic Partial Oxidation reactor. Use of this apparatus permits beneficial long term operation of this Catalytic Partial Oxidation reactor.Type: GrantFiled: July 21, 2009Date of Patent: May 14, 2013Assignees: Precision Combustion, Inc., Honda Motor Co., Ltd.Inventors: Subir Roychoudhury, David Spence, Richard Mastanduno, Dennis E. Walsh, Jun Iwamoto, Go Motohashi, Hitoshi Mikami, Eric Walker
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Patent number: 8387380Abstract: The invention provides an apparatus and a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced into a combustion chamber and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned in direct contact (non-spaced-apart relation) with the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head; and the catalytic reaction products are exhausted with heat recuperation.Type: GrantFiled: October 8, 2009Date of Patent: March 5, 2013Assignee: Precision Combustion, Inc.Inventors: Subir Roychoudhury, David Spence, Bruce B. Crowder, Richard T. Mastanduno, Jonathan Berry
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Publication number: 20130017608Abstract: This invention relates to a novel Pleuromutilin gene cluster and methods of increasing yields of Pleuromutilin produced by Clitopilus and related basidiomycete species.Type: ApplicationFiled: October 28, 2010Publication date: January 17, 2013Applicant: Glaxo Wellcome HouseInventors: Andrew Mark Bailey, Gatherine Collins, Amanda Crawford, Gary Foster, Alison Michelle Griffin, Sreedhar Kilaru, Angela Scrogham, David Spence
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Patent number: 8337757Abstract: A method is provided for controlling the operating temperature of a catalytic reactor using a closed-loop system that provides for varying the reactor input and other operating parameters in order to maintain the operating temperature of the reactor at or near the initial setpoint temperature for operation of the reactor. In one example, maximum and minimum operating temperatures with a catalytic partial oxidation reactor are controlled, as well as maintaining control over the corresponding minimum required ratio of oxygen atoms to carbon atoms, such that the operating temperature within the reactor is maintained below the material limits but above threshold temperatures for coking.Type: GrantFiled: February 9, 2009Date of Patent: December 25, 2012Assignee: Precision Combustion, Inc.Inventors: Subir Roychoudhury, Joel M. Desjardins, David Spence, Richard Mastanduno, Dennis E. Walsh, William C. Pfefferle
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Patent number: 8258357Abstract: This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.Type: GrantFiled: March 25, 2009Date of Patent: September 4, 2012Assignee: Lummus Technology Inc.Inventors: Kerman Dukandar, David Spence, Sunil Panditrao
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Publication number: 20120090238Abstract: A process of catalytic partial oxidation of a hydrocarbon fuel, such as diesel, with an oxidant, such as air, to produce a partially-oxidized reaction product, such as a hydrogen-containing fuel gas, with simultaneous in-situ coke removal. The process involves feeding a hydrocarbon fuel and an oxidant to a reactor in a fuel-rich feed ratio; reacting the fuel and oxidant for a fuel-rich cycle-time so as to produce a partially-oxidized reaction product; varying the fuel feed, or the oxidant feed, or both feeds to produce a fuel-lean feed to the reactor; maintaining the fuel-lean feed for a fuel-lean cycle-time sufficient to reduce coke deposits while maintaining a substantially constant yield of partially-oxidized reaction product; and alternating between the fuel-rich and fuel-lean operating cycles.Type: ApplicationFiled: October 14, 2010Publication date: April 19, 2012Inventors: Subir Roychoudhury, Richard Mastanduno, David Spence, Jun Iwamoto, Go Motohashi
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Publication number: 20110016791Abstract: An apparatus for fuel reforming is provided that utilizes pulsed injectors for a fuel flow controller and an air flow controller, and the injectors are integrated with an atomizing mixer thereby producing a fuel-air mixture having an O/C Ratio which, in turn, is passed to a Catalytic Partial Oxidation reactor. Use of this apparatus permits beneficial long term operation of this Catalytic Partial Oxidation reactor.Type: ApplicationFiled: July 21, 2009Publication date: January 27, 2011Inventors: Subir Roychoudhury, David Spence, Richard Mastanduno, Dennis E. Walsh, Jun Iwamoto, Go Motohashi, Hitoshi Mikami, Eric Walker
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Publication number: 20100249471Abstract: This invention relates to an integrated process for the efficient production of olefins from C4 feedstocks comprising butane and more particularly to a method of producing propylene and butadiene. The process combines a dehydrogenation unit with an olefin conversion unit to convert butane feedstock to propylene and butadiene products. The combined catadiene-OCT process produces yields of propylene from normal butane in excess of 70%.Type: ApplicationFiled: March 25, 2009Publication date: September 30, 2010Inventors: Kerman Dukandar, David Spence, Sunil Panditrao
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Publication number: 20100126165Abstract: The invention provides an apparatus and a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced into a combustion chamber and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned in direct contact (non-spaced-apart relation) with the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head; and the catalytic reaction products are exhausted with heat recuperation.Type: ApplicationFiled: October 8, 2009Publication date: May 27, 2010Inventors: Subir Roychoudhury, David Spence, Bruce B. Crowder, Richard T. Mastanduno, Jonathan Berry
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Publication number: 20090252661Abstract: A fuel reformer includes a reforming portion having a tubular catalytic converter that is composed of a substrate supporting the catalytic component, and is arranged to have a center axis extending along the supply direction of the fuel and oxidizer derived from a supply portion, and a communication passage arranged along an inner wall of the catalytic converter and communicating with the supply portion. The fuel and oxidizer supplied from the supply portion to the communication passage pass from the inner wall of the catalytic converter to an outer wall thereof by forced convection, thereby reforming the fuel.Type: ApplicationFiled: April 7, 2008Publication date: October 8, 2009Inventors: Subir Roychoudhury, David Spence, Richard Mastanduno, Dennis E. Walsh, Jun Iwamoto, Go Motohashi, Hitoshi Mikami, Eric Walker
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Publication number: 20090228146Abstract: A method is provided for controlling the operating temperature of a catalytic reactor using a closed-loop system that provides for varying the reactor input and other operating parameters in order to maintain the operating temperature of the reactor at or near the initial setpoint temperature for operation of the reactor. In one example, maximum and minimum operating temperatures with a catalytic partial oxidation reactor are controlled, as well as maintaining control over the corresponding minimum required ratio of oxygen atoms to carbon atoms, such that the operating temperature within the reactor is maintained below the material limits but above threshold temperatures for coking.Type: ApplicationFiled: February 9, 2009Publication date: September 10, 2009Inventors: Subir Roychoudhury, Joel M. Desjardins, David Spence, Richard Mastanduno, Dennis E. Walsh, William C. Pfefferle