Patents by Inventor Bhawani Tripathy
Bhawani Tripathy 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: 10094331Abstract: The cylinder head gasket includes a gasket layer which presents an inner periphery that surrounds an opening. The gasket layer has a first thickness adjacent the inner periphery. A combustion seal is positioned in the opening and extends circumferentially around an axis. The combustion seal is joined with the inner periphery of the gasket layer. The combustion seal has a height that is greater than the first thickness of the gasket layer. The combustion seal includes at least one seal body which is generally C-shaped as viewed in cross-section and is resiliently flexible for maintaining fluid tight seals with the cylinder head and the engine block. The C-shaped seal body presents a pocket which faces away from the inner periphery of the of the gasket layer for receiving combustion gasses during use to improve the fluid tight seals established with the cylinder head and the engine block.Type: GrantFiled: December 23, 2016Date of Patent: October 9, 2018Assignee: Federal-Mogul LLCInventors: Thomas W. Swasey, Chris Magewick, Bhawani Tripathy
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Publication number: 20170107942Abstract: The cylinder head gasket includes a gasket layer which presents an inner periphery that surrounds an opening. The gasket layer has a first thickness adjacent the inner periphery. A combustion seal is positioned in the opening and extends circumferentially around an axis. The combustion seal is joined with the inner periphery of the gasket layer. The combustion seal has a height that is greater than the first thickness of the gasket layer. The combustion seal includes at least one seal body which is generally C-shaped as viewed in cross-section and is resiliently flexible for maintaining fluid tight seals with the cylinder head and the engine block. The C-shaped seal body presents a pocket which faces away from the inner periphery of the of the gasket layer for receiving combustion gasses during use to improve the fluid tight seals established with the cylinder head and the engine block.Type: ApplicationFiled: December 23, 2016Publication date: April 20, 2017Inventors: THOMAS W. SWASEY, CHRIS MAGEWICK, BHAWANI TRIPATHY
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Patent number: 9618121Abstract: A metal gasket includes embossments that exhibit essentially full functional recovery and full retained internal stress at temperatures up to about 1000° F. which is made from sheet material that is cold rolled and whose embossments are work hardened without any post embossment heat treating that would act to harden the material. This material may also receive a precipitation hardening heat treatment prior to being embossed. The gasket materials include alloys having greater than about 18% Ni, greater than about 14% Cr, from about 0.1 to 10% of at least one of Mo, Ti, V, Al, Co, Nb, Ta or Cu and the balance Fe with incidental impurities, which are cold rolled without any post embossment heat treating that would act to harden the material.Type: GrantFiled: June 24, 2013Date of Patent: April 11, 2017Assignee: Federal-Mogul CorporationInventors: Bhawani Tripathy, Thomas O. Zurfluh
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Patent number: 9528466Abstract: The cylinder head gasket includes a gasket layer which presents an inner periphery that surrounds an opening. The gasket layer has a first thickness adjacent the inner periphery. A combustion seal is positioned in the opening and extends circumferentially around an axis. The combustion seal is joined with the inner periphery of the gasket layer. The combustion seal has a height that is greater than the first thickness of the gasket layer. The combustion seal includes at least one seal body which is generally C-shaped as viewed in cross-section and is resiliently flexible for maintaining fluid tight seals with the cylinder head and the engine block. The C-shaped seal body presents a pocket which faces away from the inner periphery of the of the gasket layer for receiving combustion gasses during use to improve the fluid tight seals established with the cylinder head and the engine block.Type: GrantFiled: February 27, 2015Date of Patent: December 27, 2016Assignee: Federal-Mogul CorporationInventors: Thomas W. Swasey, Chris Magewick, Bhawani Tripathy
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Publication number: 20160252046Abstract: The cylinder head gasket includes a gasket layer which presents an inner periphery that surrounds an opening. The gasket layer has a first thickness adjacent the inner periphery. A combustion seal is positioned in the opening and extends circumferentially around an axis. The combustion seal is joined with the inner periphery of the gasket layer. The combustion seal has a height that is greater than the first thickness of the gasket layer. The combustion seal includes at least one seal body which is generally C-shaped as viewed in cross-section and is resiliently flexible for maintaining fluid tight seals with the cylinder head and the engine block. The C-shaped seal body presents a pocket which faces away from the inner periphery of the of the gasket layer for receiving combustion gasses during use to improve the fluid tight seals established with the cylinder head and the engine block.Type: ApplicationFiled: February 27, 2015Publication date: September 1, 2016Inventors: Thomas W. Swasey, Chris Magewick, Bhawani Tripathy
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Publication number: 20150276061Abstract: An elastomeric seal (20), such as a shaft seal for automotive vehicle applications, includes an elastomeric compound (22) chemically coupled to a metal sealing ring (24) and is formed without an oven post curing step. The elastomeric seal (20) provides exceptional physical properties, similar to those of elastomeric seals of the prior art formed with an oven post curing step. The elastomeric seal (20) has an elastic modulus of 6.0 MPa to 13.0 MPa and a tensile strength of 11.1 MPa to 14.8 MPa. The elastomeric compound (22) includes 52.0 to 68.0 wt. % fluoroelastomer, 20.0 to 35.0 wt. % calcium silicate, and 5.0 to 15.0 wt. % diatomite. The elastomeric compound (22) is fully cured and chemically coupled to the metal sealing ring (24) during the compression or injection molding step, and thus an oven post curing step is not required.Type: ApplicationFiled: June 17, 2015Publication date: October 1, 2015Inventors: Junfeng Bian, Roger Holliday, Bhawani Tripathy
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Patent number: 9086150Abstract: An elastomeric seal (20), such as a shaft seal for automotive vehicle applications, includes an elastomeric compound (22) chemically coupled to a metal sealing ring (24) and is formed without an oven post curing step. The elastomeric seal (20) provides exceptional physical properties, similar to those of elastomeric seals of the prior art formed with an oven post curing step. The elastomeric seal (20) has an elastic modulus of 6.0 MPa to 13.0 MPa and a tensile strength of 11.1 MPa to 14.8 MPa. The elastomeric compound (22) includes 52.0 to 68.0 wt. % fluoroelastomer, 20.0 to 35.0 wt. % calcium silicate, and 5.0 to 15.0 wt. % diatomite. The elastomeric compound (22) is fully cured and chemically coupled to the metal sealing ring (24) during the compression or injection molding step, and thus an oven post curing step is not required.Type: GrantFiled: January 24, 2013Date of Patent: July 21, 2015Assignee: Federal-Mogul CorporationInventors: Junfeng Bian, Roger Holliday, Bhawani Tripathy
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Publication number: 20140203518Abstract: An elastomeric seal (20), such as a shaft seal for automotive vehicle applications, includes an elastomeric compound (22) chemically coupled to a metal sealing ring (24) and is formed without an oven post curing step. The elastomeric seal (20) provides exceptional physical properties, similar to those of elastomeric seals of the prior art formed with an oven post curing step. The elastomeric seal (20) has an elastic modulus of 6.0 MPa to 13.0 MPa and a tensile strength of 11.1 MPa to 14.8 MPa. The elastomeric compound (22) includes 52.0 to 68.0 wt. % fluoroelastomer, 20.0 to 35.0 wt. % calcium silicate, and 5.0 to 15.0 wt. % diatomite. The elastomeric compound (22) is fully cured and chemically coupled to the metal sealing ring (24) during the compression or injection molding step, and thus an oven post curing step is not required.Type: ApplicationFiled: January 24, 2013Publication date: July 24, 2014Inventors: Junfeng Bian, Roger Holliday, Bhawani Tripathy
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Publication number: 20130283883Abstract: A metal gasket includes embossments that exhibit essentially full functional recovery and full retained internal stress at temperatures up to about 1000° F. which is made from sheet material that is cold rolled and whose embossments are work hardened without any post embossment heat treating that would act to harden the material. This material may also receive a precipitation hardening heat treatment prior to being embossed. The gasket materials include alloys having greater than about 18% Ni, greater than about 14% Cr, from about 0.1 to 10% of at least one of Mo, Ti, V, Al, Co, Nb, Ta or Cu and the balance Fe with incidental impurities, which are cold rolled without any post embossment heat treating that would act to harden the material.Type: ApplicationFiled: June 24, 2013Publication date: October 31, 2013Inventors: Bhawani Tripathy, Thomas O. Zurfluh
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Patent number: 8470098Abstract: A metal gasket includes embossments that exhibit essentially full functional recovery and full retained internal stress at temperatures up to about 1000° F. which is made from sheet material that is cold rolled and whose embossments are work hardened without any post embossment heat treating that would act to harden the material. This material may also receive a precipitation hardening heat treatment prior to being embossed. The gasket materials include alloys having greater than about 18% Ni, greater than about 14% Cr, from about 0.1 to 10% of at least one of Mo, Ti, V, Al, Co, Nb, Ta or Cu and the balance Fe with incidental impurities, which are cold rolled without any post embossment heat treating that would act to harden the material.Type: GrantFiled: March 10, 2008Date of Patent: June 25, 2013Assignee: Federal-Mogul CorporationInventors: Bhawani Tripathy, Thomas O. Zurfluh
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Patent number: 8371156Abstract: A compression sensor gasket assembly and method of construction thereof is provided. The compression sensor gasket assembly includes a gasket body having opposite sealing surfaces extending between an outer periphery and an inner periphery with the inner periphery bounding a through opening. The gasket body has a passage extending from the outer periphery through the inner periphery and a pressure sensor assembly releasably attached to the gasket body in the passage and being configured to sense pressure within the through opening. The pressure sensor assembly can be removed from the gasket body in service without having to disassemble clamped members from clamped abutment with the gasket assembly. Further, the pressure sensor assembly can be routed over a curved path extending between the outer and inner peripheries to navigate about features that may be present in the gasket body.Type: GrantFiled: June 1, 2010Date of Patent: February 12, 2013Assignee: Federal-Mogul CorporationInventors: David Toth, Bhawani Tripathy, Marcin Fracz, Daniele DeFranceshi
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Patent number: 8157269Abstract: The subject invention provides a gasket for sealing multiple fluids and a method of forming the gasket. The gasket includes a carrier, a first elastomeric material, and a second elastomeric material different than the first elastomeric material. The first and second elastomeric materials are disposed in contact with the carrier in a flowable state such that the first and the second materials flow together to form a third elastomeric material comprising a mixture of the first and second elastomeric materials. The first and second elastomeric materials include cure systems that are compatible to ensure sufficient bonding within the third elastomeric material. Adhesive materials that are compatible with each of the first, second, and third elastomeric materials and the carrier are used to bond the elastomeric materials to the carrier.Type: GrantFiled: January 15, 2010Date of Patent: April 17, 2012Assignee: Federal-Mogul World Wide, Inc.Inventors: Ute Rueger, Kerry Smith, Bhawani Tripathy, Thomas Hemmrich
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Publication number: 20110239749Abstract: A cylinder head compression sensor gasket assembly includes a gasket body having a sealing portion configured to be clamped between an engine block and a cylinder head. The sealing portion has a plurality of through openings configured to register with separate cylinder bore in the engine block wherein the sealing portion establishes a gas-tight seal about the through passages. A plurality of pressure sensor assemblies are attached in sealed engagement with the gasket body with at least one of the pressure sensor assemblies being configured to sense pressure within a separate one of the through openings. An electrical connector is supported on the gasket body radially outwardly from the sealing portion. The electrical connector is configured in electrical communication with each of the pressure sensor assemblies. Accordingly, the electrical connector is accessible without having to disassemble the gasket body from being clamped between the cylinder head and the engine block.Type: ApplicationFiled: March 31, 2011Publication date: October 6, 2011Inventors: David M. Toth, Marek Wlodarczyk, Bhawani Tripathy, Jonathan Youngman, James Stout
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Publication number: 20110204580Abstract: A multilayer metal gasket (40) having first (28) and second (30) functional layers. Each layer (28, 30) includes an opening (34, 38) for sealing a fluid passage or combustion chamber. Each layer (28, 30) includes a folded lip or rim (50, 52) bent in opposite directions and overlapping one another in a nested configuration to form a labyrinth which serves also as the compression stopper feature for the gasket assembly (40). Sealing beads (42, 44) are formed in each layer (28, 30) and, preferably, are arranged to contact each other in crest-to-crest orientation to perfect a seal.Type: ApplicationFiled: February 18, 2011Publication date: August 25, 2011Applicant: FEDERAL-MOGUL CORPORATIONInventor: Bhawani Tripathy
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Patent number: 7887063Abstract: The subject invention provides a gasket for sealing multiple fluids and a method of forming the gasket. The gasket includes a carrier, a first elastomeric material, and a second elastomeric material different than the first elastomeric material. The first and second elastomeric materials are disposed in contact with the carrier in a flowable state such that the first and the second materials flow together to form a third elastomeric material comprising a mixture of the first and second elastomeric materials. The first and second elastomeric materials include cure systems that are compatible to ensure sufficient bonding within the third elastomeric material. Adhesive materials that are compatible with each of the first, second, and third elastomeric materials and the carrier are used to bond the elastomeric materials to the carrier.Type: GrantFiled: June 7, 2005Date of Patent: February 15, 2011Assignee: Federal-Mogul World Wide, Inc.Inventors: Ute Rueger, Kerry Smith, Bhawani Tripathy, Thomas Hemmrich
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Publication number: 20100300185Abstract: A compression sensor gasket assembly and method of construction thereof is provided. The compression sensor gasket assembly includes a gasket body having opposite sealing surfaces extending between an outer periphery and an inner periphery with the inner periphery bounding a through opening. The gasket body has a passage extending from the outer periphery through the inner periphery and a pressure sensor assembly releasably attached to the gasket body in the passage and being configured to sense pressure within the through opening. The pressure sensor assembly can be removed from the gasket body in service without having to disassemble clamped members from clamped abutment with the gasket assembly. Further, the pressure sensor assembly can be routed over a curved path extending between the outer and inner peripheries to navigate about features that may be present in the gasket body.Type: ApplicationFiled: June 1, 2010Publication date: December 2, 2010Inventors: David Toth, Bhawani Tripathy, Marcin Fracz, Daniele DeFranceshi
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Publication number: 20100117307Abstract: The subject invention provides a gasket for sealing multiple fluids and a method of forming the gasket. The gasket includes a carrier, a first elastomeric material, and a second elastomeric material different than the first elastomeric material. The first and second elastomeric materials are disposed in contact with the carrier in a flowable state such that the first and the second materials flow together to form a third elastomeric material comprising a mixture of the first and second elastomeric materials. The first and second elastomeric materials include cure systems that are compatible to ensure sufficient bonding within the third elastomeric material. Adhesive materials that are compatible with each of the first, second, and third elastomeric materials and the carrier are used to bond the elastomeric materials to the carrier.Type: ApplicationFiled: January 15, 2010Publication date: May 13, 2010Inventors: Ute Rueger, Kerry Smith, Bhawani Tripathy, Thomas Hemmrich
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Publication number: 20080217866Abstract: A metal gasket includes embossments that exhibit essentially full functional recovery and full retained internal stress at temperatures up to about 1000° F. which is made from sheet material that is cold rolled and whose embossments are work hardened without any post embossment heat treating that would act to harden the material. This material may also receive a precipitation hardening heat treatment prior to being embossed. The gasket materials include alloys having greater than about 18% Ni, greater than about 14% Cr, from about 0.1 to 10% of at least one of Mo, Ti, V, Al, Co, Nb, Ta or Cu and the balance Fe with incidental impurities, which are cold rolled without any post embossment heat treating that would act to harden the material.Type: ApplicationFiled: March 10, 2008Publication date: September 11, 2008Inventors: Bhawani Tripathy, Thomas O. Zurfluh
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Patent number: 7374177Abstract: A multilayer metal gasket, such as a multilayer steel head gasket, for an internal combustion engine has upper and lower functional layers and at least one intermediate layer. At least one of these layers has a circumferential compression control feature in the form of a protrusion or groove which varies in thickness or depth, respectively, around its circumference. The variable thickness of the compression control feature enables uniform sealing pressure on the sealing surfaces of the gasket.Type: GrantFiled: September 20, 2005Date of Patent: May 20, 2008Assignee: Federal-Mogul World Wide, Inc.Inventors: Bhawani Tripathy, Daniel J. Vialard
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Patent number: 7341257Abstract: A shaft seal/position sensor module assembly includes a carrier body that is mountable on a shaft housing about an opening through which a rotatable shaft extends. A sleeve is mountable on the shaft and carries a multi-pole encoder ring having a radially outwardly facing sensor surface. A magneto-resistive sensor is mounted on said carrier body in position to communicate with said sensor surface of said encoder ring.Type: GrantFiled: April 15, 2005Date of Patent: March 11, 2008Assignee: Federal-Mogul World Wide, IncInventors: David M. Toth, Richard E. Dewald, Bhawani Tripathy