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).

  • Publication number: 20190186034
    Abstract: 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: Application
    Filed: August 21, 2018
    Publication date: June 20, 2019
    Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
  • Patent number: 9841054
    Abstract: 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: Grant
    Filed: February 18, 2016
    Date of Patent: December 12, 2017
    Assignee: Bruce Diamond Corporation
    Inventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
  • Publication number: 20160160919
    Abstract: 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: Application
    Filed: February 18, 2016
    Publication date: June 9, 2016
    Inventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
  • Patent number: 9273724
    Abstract: 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: Grant
    Filed: December 11, 2013
    Date of Patent: March 1, 2016
    Assignee: Bruce Diamond Corporation
    Inventors: C. Andrew Rosenholm, Scott O'Brien, Amitava Datta
  • Publication number: 20150369366
    Abstract: 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: Application
    Filed: September 1, 2015
    Publication date: December 24, 2015
    Inventors: Amitava Datta, Hai-Ping Ma, Jeremy Payne
  • Patent number: 9151387
    Abstract: 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: Grant
    Filed: January 15, 2009
    Date of Patent: October 6, 2015
    Assignee: Parker-Hannifin Corporation
    Inventors: Amitava Datta, Hai-Ping Ma, Jeremy Payne
  • Publication number: 20150068905
    Abstract: 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: Application
    Filed: July 14, 2014
    Publication date: March 12, 2015
    Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
  • Publication number: 20140137831
    Abstract: 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: Application
    Filed: November 21, 2013
    Publication date: May 22, 2014
    Applicant: RZR Corporation
    Inventors: Amitava Datta, Robert Z. Reath, John D. Carpenter
  • Patent number: 8445114
    Abstract: 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: Grant
    Filed: December 16, 2010
    Date of Patent: May 21, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Amitava Datta, John D. Carpenter, Aaron T. Nardi, Blair A. Smith
  • Patent number: 8431238
    Abstract: 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: Grant
    Filed: February 19, 2009
    Date of Patent: April 30, 2013
    Assignee: Parker-Hannifin Corporation
    Inventors: Jeremy M. Payne, James E. Beach, Amitava Datta, Kenneth W. Cornett, Dominick G. More
  • Publication number: 20120247962
    Abstract: 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: Application
    Filed: June 18, 2012
    Publication date: October 4, 2012
    Applicant: USC, LLC
    Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
  • Patent number: 8202627
    Abstract: 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: Grant
    Filed: May 19, 2011
    Date of Patent: June 19, 2012
    Assignee: USC, LLC
    Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
  • Patent number: 8168056
    Abstract: 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: Grant
    Filed: December 10, 2008
    Date of Patent: May 1, 2012
    Assignee: USC, LLC
    Inventors: Amitava Datta, John D. Carpenter
  • Patent number: 8104770
    Abstract: 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: Grant
    Filed: February 1, 2008
    Date of Patent: January 31, 2012
    Assignee: Parker-Hannifin Corporation
    Inventors: Amitava Datta, Peter G. Amos, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
  • Publication number: 20110240479
    Abstract: 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: Application
    Filed: May 19, 2011
    Publication date: October 6, 2011
    Inventors: Robert Z. Reath, Amitava Datta, John D. Carpenter
  • Patent number: 7938407
    Abstract: 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: Grant
    Filed: October 23, 2007
    Date of Patent: May 10, 2011
    Assignee: Parker-Hannifin Corporation
    Inventors: Amitava Datta, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
  • Publication number: 20110086239
    Abstract: 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: Application
    Filed: December 16, 2010
    Publication date: April 14, 2011
    Inventors: Amitava Datta, John D. Carpenter
  • Publication number: 20110076848
    Abstract: 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: Application
    Filed: June 30, 2010
    Publication date: March 31, 2011
    Inventors: Amitava Datta, Peter G. Amos, Dominick G. More, Kenneth W. Cornett, Jeremy Payne
  • Patent number: 7815784
    Abstract: 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: Grant
    Filed: June 23, 2005
    Date of Patent: October 19, 2010
    Assignee: Advanced Components & Materials, Inc.
    Inventor: Amitava Datta
  • Patent number: 7726660
    Abstract: 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: Grant
    Filed: May 14, 2007
    Date of Patent: June 1, 2010
    Assignee: Rexnord Industries, LLC
    Inventor: Amitava Datta