Patents by Inventor Salvator Nigarura
Salvator Nigarura 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: 8910764Abstract: A clutch is provided that includes an inner race and an outer race that moves relative to the inner race. A pedestal is also provided and the position of the pedestal is fixed with respect to at least one of the inner race or the outer race. A bearing block is also included that engages the pedestal. In some versions of the clutch the bearing block may be made out of plastic or bronze.Type: GrantFiled: November 16, 2012Date of Patent: December 16, 2014Assignee: PMG Indiana Corp.Inventors: Rajesh Parameswaran, Michael Bird, Salvator Nigarura, Michael Scott
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Publication number: 20130126290Abstract: A clutch is provided that includes an inner race and an outer race that moves relative to the inner race. A pedestal is also provided and the position of the pedestal is fixed with respect to at least one of the inner race or the outer race. A bearing block is also included that engages the pedestal. In some versions of the clutch the bearing block may be made out of plastic or bronze.Type: ApplicationFiled: November 16, 2012Publication date: May 23, 2013Inventors: Rajesh Parameswaran, Michael Bird, Salvator Nigarura, Michael Scott
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Patent number: 7722803Abstract: A powder mixture alloy is provided for manufacturing surface densified high carbon sintered steel articles containing iron or iron pre-alloyed powder, which has been preliminary mixed with at least 0.4 wt % graphite, lubricant and optionally at least one alloying element from the group of nickel, chromium, copper, manganese and molybdenum. Components are manufactured utilizing the alloy mixture comprising the steps of: a) compacting the metallic powder to obtain a compact; b) pre-sintering the compact at a low temperature to prevent graphite from diffusing into the iron; c) surface densifying of the pre-sintered compact to a predetermined densification depth; d) sintering under neutral gas or carburizing atmosphere; e) heat treating the sintered compact.Type: GrantFiled: July 27, 2006Date of Patent: May 25, 2010Assignee: PMG Indiana Corp.Inventors: Salvator Nigarura, Rick Ellingsworth, Eric Riley, Juan R. L. Trasorras
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Patent number: 7534391Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.Type: GrantFiled: September 11, 2006Date of Patent: May 19, 2009Assignee: PMG Indiana Corp.Inventors: Juan R. L. Trasorras, Salvator Nigarura
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Publication number: 20080025863Abstract: A powder mixture alloy is provided for manufacturing surface densified high carbon sintered steel articles containing iron or iron pre-alloyed powder, which has been preliminary mixed with at least 0.4 wt % graphite, lubricant and optionally at least one alloying element from the group of nickel, chromium, copper, manganese and molybdenum. Components are manufactured utilizing the alloy mixture comprising the steps of: a) compacting the metallic powder to obtain a compact; b) pre-sintering the compact at a low temperature to prevent graphite from diffusing into the iron; c) surface densifying of the pre-sintered compact to a predetermined densification depth; d) sintering under neutral gas or carburizing atmosphere; e) heat treating the sintered compact.Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventors: Salvator Nigarura, Rick Ellingsworth, Eric Riley, Juan R.L. Trasorras
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Patent number: 7314498Abstract: An iron-based sintered powder metal article for cam lobe and other high temperature, high wear applications requiring excellent net-shape stability during sintering comprises a powder metal mixture consisting essentially of, by weight, 0.5–3.0% Mo, 1–6.5% Cr, 1–5% V, and the balance Fe and impurities. These articles also have a carburized case having 0.7–1.2% C by weight. Following carburization of the case, the articles are quenched to form a martensitic matrix having a network of disbursed carbides of Cr and V. The resulting sintered articles have good mechanical strength and wear resistance and possess excellent machineability and dimensional stability.Type: GrantFiled: October 19, 2004Date of Patent: January 1, 2008Assignee: PMG Ohio Corp.Inventors: Salvator Nigarura, Juan R.L. Trasorras
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Publication number: 20070081915Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.Type: ApplicationFiled: September 11, 2006Publication date: April 12, 2007Inventors: Juan Trasorras, Salvator Nigarura
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Patent number: 7160351Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.Type: GrantFiled: October 1, 2002Date of Patent: January 9, 2007Assignee: PMG Ohio Corp.Inventors: Juan R. L. Trasorras, Salvator Nigarura
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Publication number: 20060081089Abstract: An iron-based sintered powder metal article for cam lobe and other high temperature, high wear applications requiring excellent net-shape stability during sintering comprises a powder metal mixture consisting essentially of, by weight, 0.5-3.0% Mo, b-6.5% Cr, 1-5% V, and the balance Fe and impurities. These articles also have a carburized case having 0.7-1.2% C by weight. Following carburization of the case, the articles are quenched to form a martensitic matrix having a network of disbursed carbides of Cr and V. The resulting sintered articles have good mechanical strength and wear resistance and possess excellent machineability and dimensional stability.Type: ApplicationFiled: October 19, 2004Publication date: April 20, 2006Applicant: Federal-Mogul World Wide, Inc.Inventors: Salvator Nigarura, Juan Trasorras
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Publication number: 20040062673Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.Type: ApplicationFiled: October 1, 2002Publication date: April 1, 2004Applicant: FEDERAL-MOGUL WORLD WIDE, INC.Inventors: Juan R.L. Trasorras, Salvator Nigarura
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Patent number: 6679932Abstract: A ferrous sintered valve seat material is made of mixed powders comprising a sinter-hardenable phase and a finely dispersed carbide phase. The powder mixture comprises a sinter-hardening prealloyed powder forming 75 to 90 wt. % of the mixture and a tool steel powder with finely dispersed carbides forming 5 to 25% of the mixture. Machinability additives of MnS, CaF2 or MoS2 types are added in an amount of 1 to 5 wt. %. Improved thermal conductivity is obtained by infiltrating the compact with Cu up to 25 wt. %.Type: GrantFiled: April 30, 2002Date of Patent: January 20, 2004Assignee: Federal-Mogul World Wide, Inc.Inventors: Mark Birler, Salvator Nigarura, Juan Trasorras
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Patent number: 6632263Abstract: An iron-based sintered powder metal mixture for valve guides, valve seat inserts and other high temperature, high wear applications requiring excellent net-shape stability during sintering comprises a powder metal mixture consisting essentially of 0.5-2.0 wt. % of fine, soluble graphite which goes into solution in the elemental iron matrix, 0.5-2.5 wt. % stable graphite which remains as free graphite in the sintered structure, 0.5-3.0 MoS2, which reacts with 1.0-5.0 wt. % copper to drive a sintering reaction at relatively low sintering temperatures of between 1030—1150° C. The resulting sintered particles have good mechanical strength and wear resistance and possess excellent machineability and dimensional stability.Type: GrantFiled: May 1, 2002Date of Patent: October 14, 2003Assignee: Federal - Mogul World Wide, Inc.Inventors: Salvator Nigarura, Mark Birler, Juan Trasorras
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Publication number: 20030010153Abstract: A ferrous sintered valve seat material is made of mixed powders comprising a sinter-hardenable phase and a finely dispersed carbide phase. The powder mixture comprises a sinter-hardening prealloyed powder forming 75 to 90 wt. % of the mixture and a tool steel powder with finely dispersed carbides forming 5 to 25% of the mixture. Machinability additives of MnS, CaF2 or MoS2types are added in an amount of 1 to 5 wt. %. Improved thermal conductivity is obtained by infiltrating the compact with Cu up to 25 wt. %.Type: ApplicationFiled: April 30, 2002Publication date: January 16, 2003Applicant: FEDERAL-MOGUL WORLD WIDE, INC.Inventors: Mark Birler, Salvator Nigarura, Juan Trasorras