Patents by Inventor Amitava Datta
Amitava Datta 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: 20190186034Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: ApplicationFiled: August 21, 2018Publication date: June 20, 2019Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
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Patent number: 9841054Abstract: A thrust bearing pad includes a relatively low wear and low friction contact layer disposed on a metallic substrate. The metallic substrate allows a manufacturer to couple the thrust bearing pad to a corresponding metallic thrust bearing in a relatively secure manner while the contact layer extends the operating life of the thrust bearing and minimizes maintenance.Type: GrantFiled: February 18, 2016Date of Patent: December 12, 2017Assignee: Bruce Diamond CorporationInventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
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Publication number: 20160160919Abstract: A thrust bearing pad includes a relatively low wear and low friction contact layer disposed on a metallic substrate. The metallic substrate allows a manufacturer to couple the thrust bearing pad to a corresponding metallic thrust bearing in a relatively secure manner while the contact layer extends the operating life of the thrust bearing and minimizes maintenance.Type: ApplicationFiled: February 18, 2016Publication date: June 9, 2016Inventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
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Patent number: 9273724Abstract: A thrust bearing pad includes a relatively low wear and low friction contact layer disposed on a metallic substrate. The metallic substrate allows a manufacturer to couple the thrust bearing pad to a corresponding metallic thrust bearing in a relatively secure manner while the contact layer extends the operating life of the thrust bearing and minimizes maintenance.Type: GrantFiled: December 11, 2013Date of Patent: March 1, 2016Assignee: Bruce Diamond CorporationInventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
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Publication number: 20150369366Abstract: A metallic seal design that reduces manufacturing costs by minimizing production steps and also lowers the sealing force by incorporating a thin-wall, high height/width ratio annular column. The seal has two horizontal ribs which constrain the thin-wall column from unstable buckling to thereby reduce or eliminate the tendency of the sealing dams to become inclined to sealing flange surfaces.Type: ApplicationFiled: September 1, 2015Publication date: December 24, 2015Inventors: Amitava Datta, Hai-Ping Ma, Jeremy Payne
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Patent number: 9151387Abstract: A metallic seal design that reduces manufacturing costs by minimizing production steps and also lowers the sealing force by incorporating a thin-wall, high height/width ratio annular column. The seal has two horizontal ribs which constrain the thin-wall column from unstable buckling to thereby reduce or eliminate the tendency of the sealing dams to become inclined to sealing flange surfaces.Type: GrantFiled: January 15, 2009Date of Patent: October 6, 2015Assignee: Parker-Hannifin CorporationInventors: Amitava Datta, Hai-Ping Ma, Jeremy Payne
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Publication number: 20150068905Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: ApplicationFiled: July 14, 2014Publication date: March 12, 2015Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
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Publication number: 20140137831Abstract: Embodiments of the present innovation relate to a cylinder bore coating system which simultaneously combines both friction and wear properties to enhance engine efficiency and operating life. The cylinder bore coating system includes a relatively thin top layer, such as diamond like carbon layer (DLC), disposed over a thicker, relatively hard and high modulus coating (i.e., an under coating). This combination of layers provides both low friction as well as low wear characteristics to the engine bore, relative to conventional engine bore coatings.Type: ApplicationFiled: November 21, 2013Publication date: May 22, 2014Applicant: RZR CorporationInventors: Amitava Datta, Robert Z. Reath, John D. Carpenter
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Patent number: 8445114Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: GrantFiled: December 16, 2010Date of Patent: May 21, 2013Assignee: Hamilton Sundstrand CorporationInventors: Amitava Datta, John D. Carpenter, Aaron T. Nardi, Blair A. Smith
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Patent number: 8431238Abstract: A composition and process for forming an electrodeposited coating comprising a co-deposit of a metal and MCrAlY particles. The composition includes a metal and a MCrAlY particles, and the electrodeposited coating comprises a metal matrix and MCrAlY particles dispersed in the matrix. In one aspect, a coating is provided that exhibits excellent oxidation resistance and tribological characteristics at high temperatures, including up to at least about 1350° F. A high temperature coating may comprise a nickel/cobalt alloy matrix comprising MCrAlY particles and chromium carbide particles dispersed in the nickel/cobalt matrix.Type: GrantFiled: February 19, 2009Date of Patent: April 30, 2013Assignee: Parker-Hannifin CorporationInventors: Jeremy M. Payne, James E. Beach, Amitava Datta, Kenneth W. Cornett, Dominick G. More
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Publication number: 20120247962Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicant: USC, LLCInventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
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Patent number: 8202627Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: GrantFiled: May 19, 2011Date of Patent: June 19, 2012Assignee: USC, LLCInventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
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Patent number: 8168056Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: GrantFiled: December 10, 2008Date of Patent: May 1, 2012Assignee: USC, LLCInventors: Amitava Datta, John D. Carpenter
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Patent number: 8104770Abstract: A process chamber 10 comprising a container (12), a lid (14), and a sealed interface (16) therebetween. The container's interface surface (30) and/or the lid's interface surface (32) includes at least one groove (36) in which a seal (40) is situated. The seal (40) comprises an elastomeric element (50) and a metallic element (60). The elastomeric element (50) and the metallic element (60) can be arranged and adapted to seal the chamber's interface (16) sequentially during its conversion to a sealed condition. And/or the elastomeric element (50) and the metallic element (60) can be arranged and adapted to seal the chamber's interface in series once the lid (14) is in its sealed condition.Type: GrantFiled: February 1, 2008Date of Patent: January 31, 2012Assignee: Parker-Hannifin CorporationInventors: Amitava Datta, Peter G. Amos, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
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Publication number: 20110240479Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: ApplicationFiled: May 19, 2011Publication date: October 6, 2011Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
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Patent number: 7938407Abstract: A spring seal for sealing in high temperature applications includes a jacket and a spring member disposed within the jacket. The spring member is constructed to control a sealing load or spring rate of the spring seal relative to opposing flanges while the jacket is constructed to provide a sealing surface relative to the opposing flanges. The spring member is manufactured from a cast blade alloy, thereby allowing the spring member to maintain its spring back characteristics at relatively high temperatures of about 1300° F. and greater. Accordingly, the spring member minimizes the formation of a leak path between the spring seal and the opposing flanges. In one embodiment, the spring member is manufactured with a substantially U-shaped cross-section. With such a configuration, the spring seal provides substantially balanced, opposing forces on the jacket to minimize the formation of gaps between the spring seal and the flanges.Type: GrantFiled: October 23, 2007Date of Patent: May 10, 2011Assignee: Parker-Hannifin CorporationInventors: Amitava Datta, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
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Publication number: 20110086239Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.Type: ApplicationFiled: December 16, 2010Publication date: April 14, 2011Inventors: Amitava Datta, John D. Carpenter
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Publication number: 20110076848Abstract: A seal (40) for sealing an interface between a container and a lid of a process chamber. The seal (40) comprises a metallic or polymeric sealing element (50) and an elastomeric sealing element (60) that are arranged to seal the interface in series, with the metallic or polymeric sealing element (50) being situated to encounter processing activity upstream of the elastomeric sealing element (60).Type: ApplicationFiled: June 30, 2010Publication date: March 31, 2011Inventors: Amitava Datta, Peter G. Amos, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
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Patent number: 7815784Abstract: An electro-composite tribological coating for coating a flexible or compliant structure, for example a structural seal, includes a cobalt and cobalt alloy base containing a fine dispersion of tribologically suitable particles such as chromium carbide (Cr3C2), silicon carbide (SiC), carbon graphite, and the like, which can be deposited directly on the outer surface of the seal as a near-net shape coating requiring little or no mechanical polishing or grinding. The coating is deposited on the seal in one embodiment by an electrolytic bath. In this manner, a near-net shape coating of a desirable thickness, for example having a thickness of about 0.005? and a desirable surface finish can be achieved in the as-plated condition with little or no additional polishing or grinding after coating.Type: GrantFiled: June 23, 2005Date of Patent: October 19, 2010Assignee: Advanced Components & Materials, Inc.Inventor: Amitava Datta
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Patent number: 7726660Abstract: A non-contacting seal for sealing in high temperature applications includes at least one segment having an inner pad with a hydrodynamic/hydrostatic lift-off geometry enabling the seal to run in a non-contact mode, and at least one finger spring supported on the pad that aids in making the seal radially compliant while also being axially stiff, compared to the radial direction. In one embodiment, multiple segments are supported on a support member spaced from the pad to form a gap (g) therebetween. The pad preferably includes a wear resistant layer on its inner diameter (ID) which prevents excessive wear of the pad. In one embodiment, the hydrodynamic/hydrostatic lift-off geometry is in the form of a groove formed on the inner pad. A cover may also be provided between inner pads at the ID and the support ring at the outer diameter OD in order to prevent leakage through the gap.Type: GrantFiled: May 14, 2007Date of Patent: June 1, 2010Assignee: Rexnord Industries, LLCInventor: Amitava Datta