Patents by Inventor Randy J. Petri
Randy J. Petri 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).
-
Patent number: 7008711Abstract: A fuel cell power system having at least one fuel cell stack, at least one fuel processor in fluid communication with the at least one fuel cell stack and heat exchangers for transferring heat between the at least one fuel cell stack and the at least one fuel processor in which the at least one fuel cell stack and the at least one fuel processor are circumferentially surrounded by a plurality concentric heat exchanger shell assemblies.Type: GrantFiled: January 27, 2003Date of Patent: March 7, 2006Assignee: Gas Technology InstituteInventors: Joseph M. Pondo, David J. Goodwin, Chakravarthy Sishtla, Randy J. Petri, Robert J. Remick
-
Publication number: 20040146763Abstract: A fuel cell power system having at least one fuel cell stack, at least one fuel processor in fluid communication with the at least one fuel cell stack and heat exchangers for transferring heat between the at least one fuel cell stack and the at least one fuel processor in which the at least one fuel cell stack and the at least one fuel processor are circumferentially surrounded by a plurality concentric heat exchanger shell assemblies.Type: ApplicationFiled: January 27, 2003Publication date: July 29, 2004Inventors: Joseph M. Pondo, David J. Goodwin, Chakravarthy Sishtla, Randy J. Petri, Robert J. Remick
-
Patent number: 5529856Abstract: Fuel cells, fuel cell components, and other electrochemical devices and components fabricated by plasma spraying. Devices such as fuel cells may be made by plasma spraying and then assembling individual components or by plasma spraying components on other components to form a laminate.Type: GrantFiled: May 12, 1995Date of Patent: June 25, 1996Assignee: Electric Power Research InstituteInventors: Randy J. Petri, Estela T. Ong
-
Patent number: 5503945Abstract: A separator plate for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced.Type: GrantFiled: August 30, 1994Date of Patent: April 2, 1996Assignee: Institute of Gas TechnologyInventors: Randy J. Petri, John Meek, Robert P. Bachta, Leonard G. Marianowski
-
Patent number: 5362578Abstract: A separator plate for a fuel cell comprising an anode current collector, a cathode current collector and a main plate, the main plate disposed between the anode current collector and the cathode current collector. The anode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the anode side of the separator plate and the cathode current collector forms a flattened peripheral wet seal structure and manifold wet seal structure on the cathode side of the separator plate. In this manner, the number of components required to manufacture and assemble a fuel cell stack is reduced.Type: GrantFiled: December 8, 1992Date of Patent: November 8, 1994Assignee: Institute of Gas TechnologyInventors: Randy J. Petri, John Meek, Robert P. Bachta, Leonard G. Marianowski
-
Patent number: 5342706Abstract: A fully internally manifolded fuel cell stack is provided by each separator plate and electrolyte in the fuel cell stack having a plurality of aligned perforations forming gas manifolds extending for the length of the cell stack. Each perforation through the separator plate is surrounded by a flattened manifold wet seal structure extending to contact the electrolytes on each face of the separator plate to form separator plate/electrolyte wet seals under cell operating conditions. Conduits through the extended manifold wet seal structure provides gas communication between one set of manifolds and the anode chambers on one face of the separator plates, and conduits through the extended manifold wet seal structure on the opposite face of the separator plates provides gas communication between a second set of the manifolds and the cathode chambers on the other face of the separator plates. Extended wet seal structures formed of thin plate material provide limited flexibility and resiliency to assure good sealing.Type: GrantFiled: July 12, 1993Date of Patent: August 30, 1994Assignee: Institute of Gas TechnologyInventors: Leonard G. Marianowski, Randy J. Petri
-
Patent number: 5227256Abstract: A fully internally manifolded fuel cell stack is provided by each separator plate, current collector, electrode, and electrolyte in the fuel cell stack having a plurality of aligned perforations forming gas manifolds extending for the length of the cell stack. Each perforation through the separator plate is surrounded by a flattened manifold wet seal structure extending to contact the current collector and/or electrode on each face of the separator plate to form electrolyte/electrode wet seals under cell operating conditions.Type: GrantFiled: July 2, 1991Date of Patent: July 13, 1993Assignee: Institute of Gas TechnologyInventors: Leonard G. Marianowski, Frank C. Schora, Randy J. Petri, Mark G. Lawson
-
Patent number: 5077148Abstract: A fully internally manifolded fuel cell stack is provided by each separator plate and electrolyte in the fuel cell stack having a plurality of aligned perforations forming gas manifolds extending for the length of the cell stack. Each perforation through the separator plate is surrounded by a flattened manifold wet seal structure extending to contact the electrolytes on each face of the separator plate to form separator plate/electrolyte wet seals under cell operating conditions.Type: GrantFiled: May 1, 1990Date of Patent: December 31, 1991Assignee: Institute of Gas TechnologyInventors: Frank C. Schora, Leonard G. Marianowski, Randy J. Petri, Mark G. Lawson
-
Patent number: 5045413Abstract: A fully internally manifolded fuel cell stack is provided by each separator plate and electrolyte in the fuel cell stack having a plurality of aligned perforations forming gas manifolds extending for the length of the cell stack. Each perforation through the separator plate is surrounded by a flattened manifold wet seal structure extending to contact the electrolytes on each face of the separator plate to form separator plate/electrolyte wet seals under cell operating conditions. Conduits through the extended manifold wet seal structure provides gas communication between one set of manifolds and the anode chambers on one face of the separator plates and conduits through the extended manifold wet seal structure on the opposite face of the separator plates provides gas communication between the other set of the manifolds and the cathode chambers on the other face of the separator plates. Extended wet seal structures formed of thin plate metal provide limited flexibility and resiliency to assure good sealing.Type: GrantFiled: April 10, 1990Date of Patent: September 3, 1991Assignee: Institute of Gas TechnologyInventors: Marianowski, Leonard G., Randy J. Petri, Mark G. Lawson
-
Patent number: 4963442Abstract: A fully internally manifolded molten carbonate fuel cell stack is provided by each separator plate and electrolyte in the fuel cell stack having an aligned perforation in each corner area forming a gas manifold extending for the length of the cell stack. Each perforation through the separator plate is surrounded by a flattened manifold wet seal structure extending to contact the electrolytes on each side of the separator plates to form a separator plate/electrolyte wet seal under cell operating conditions.Type: GrantFiled: May 3, 1989Date of Patent: October 16, 1990Assignee: Institute of Gas TechnologyInventors: Leonard G. Marianowski, Randy J. Petri
-
Patent number: 4512388Abstract: A high-temperature direct-contact thermal energy storage element for use in a system for storage and retrieval of thermal energy in the range of about 400.degree. to about 3000.degree. F. The thermal energy is directly stored, without heat exchange tubes in composite latent/sensible heat thermal energy storage media utilizing the heat of fusion and high-temperature stability of alkaline metal and alkaline earth carbonates, chlorides, nitrates, nitrites, fluorides, hydroxides and sulfates and metal, metallic alloys and mixtures thereof maintained within a porous support-structure material which itself is capable of storage as sensible heat.Type: GrantFiled: June 20, 1983Date of Patent: April 23, 1985Assignee: Institute of Gas TechnologyInventors: Terry D. Claar, Randy J. Petri
-
Patent number: 4421661Abstract: A high-temperature direct-contact thermal energy storage element for use in a system for storage and retrieval of thermal energy in the range of about 400.degree. to about 2000.degree. F. The thermal energy is directly stored, without heat exchange tubes in composite latent/sensible heat thermal energy storage media utilizing the heat of fusion and high-temperature stability of alkaline metal and alkaline earth carbonates, chlorides, nitrates, nitrites, fluorides, hydroxides, sulfates, and mixtures thereof maintained within a porous support-structure material which itself is capable of storage as sensible heat. The thermal energy storage according to the invention may be effectively utilized for storage of thermal energy derived from solar, industrial waste, process heat, and high-temperature gas reactor energy sources and retrieved for a wide variety of uses such as combustion air preheating, drying, space heating, heating of process gases, and the like.Type: GrantFiled: June 19, 1981Date of Patent: December 20, 1983Assignee: Institute of Gas TechnologyInventors: Terry D. Claar, Randy J. Petri