Patents by Inventor Sulekh C. Jain
Sulekh C. Jain 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: 5515705Abstract: An apparatus and method is provided for controlling the temperature of dies and workpiece throughout a deformation process. Dies are capable of receiving external current to resistively heat the workpiece and dies during the deformation operation, the external current being modulated by feedback temperature readings taken from the workpiece. External current may be provided from a homopolar generator capable of producing pulsed dc current at controllable intervals and magnitudes simultaneously through the dies and workpiece.Type: GrantFiled: January 23, 1992Date of Patent: May 14, 1996Assignees: Board of Regents, The University of Texas System, General Electric CompanyInventors: William F. Weldon, Sulekh C. Jain
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Patent number: 5187967Abstract: A hot forged article of a preselected profile is produced by heating a forging blank to elevated temperature and forging the blank at the elevated temperature between closed dies, to produce a forging of about the preselected profile of the final forging, but having flashing thereon. The flashing is removed by cooling the forging having flashing thereon to ambient temperature, and trimming the flashing from the forging by passing a trimming laser beam of sufficient power density to cut through the flashing along the preselected final profile of the forging. The forging may be post treated by passing a post treating excimer laser along the portion of the forging immediately adjacent the preselected profile, after the trimming laser has passed. The post treatment removes the heat affected zone, depending upon the energy level of the excimer laser.Type: GrantFiled: September 16, 1991Date of Patent: February 23, 1993Assignee: General Electric CompanyInventors: Jogender Singh, Sulekh C. Jain, Thomas W. Lloyd, Leroy A. Bates, Denis Lacroix, Ernest B. Cooper, Jr., Seetharamaiah Mannava, Serge B. Couture
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Patent number: 5161950Abstract: A dual alloy disk made from a rim alloy having high stress rupture and creep resistance as well as good hold time fatigue crack resistance and a hub alloy having high tensile strength and good low cycle fatigue crack resistance is described. The dual alloy disk is designed for use as a disk in gas turbine engines operating as high as 1500.degree. F. The hub and rim are joined together at a substantially defect-free joint to form a turbine disk having improved properties in both the hub and rim regions.Type: GrantFiled: October 4, 1989Date of Patent: November 10, 1992Assignee: General Electric CompanyInventors: Daniel D. Krueger, Bruce P. Bardes, Richard G. Menzies, Swami Ganesh, Jeffrey F. Wessels, Sulekh C. Jain, Michael E. Sauby, Keh-Minn Chang
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Patent number: 5106012Abstract: Two pieces of metal are bonded together at a surface by placing the two pieces into contact at the surface and forging the two pieces in a die which causes substantial displacement of the metal originally at the surface in a direction parallel to and outwardly from the edges of the surface. In this way, many of the defects which are potentially present at the original surface are displaced with moving metal away from the original contact between the two pieces of metal into sacrificial ribs and the remaining defects are exposed to significant strain. A portion of the displaced metal which contains many of the defects and which forms the sacrificial ribs is removed from the resulting bonded work piece as the sacrificial ribs are removed from the work piece. The result is a bond with superior properties and with a bond surface which can be located very precisely.Type: GrantFiled: July 29, 1988Date of Patent: April 21, 1992Assignee: Wyman-Gordon CompanyInventors: John M. Hyzak, Timothy E. Howson, Wilford H. Couts, Jr., Steven H. Reichman, Hugo E. Delgado, Daniel D. Kruger, Michael E. Sauby, Sulekh C. Jain, Bruce P. Bardes, Richard G. Menzies, Swami Ganesh
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Patent number: 5100050Abstract: An article of manufacture having at least a first and a second part, each part having different mechanical properties, compositions, microstructures or combinations thereof, being joined together using a forging process to yield a substantially defect-free joint region. The article in the form of a turbine disk is particularly suited for use in a gas turbine engine in which the hub or inner portion must be resistant to low cycle fatigue and have high strength, while the rim or outer portion must be resistant to stress rupture failure and creep failure.Type: GrantFiled: October 4, 1989Date of Patent: March 31, 1992Assignee: General Electric CompanyInventors: Daniel D. Krueger, Michael E. Sauby, Sulekh C. Jain, Bruce P. Bardes
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Patent number: 4299338Abstract: Valve system having a primary valve for excluding air, mounted in series with a secondary valve for controlling the flow of powder.Type: GrantFiled: September 27, 1979Date of Patent: November 10, 1981Assignee: Wyman-Gordon CompanyInventors: Sulekh C. Jain, Paul W. Forkey
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Patent number: 4287073Abstract: A lubricant composition comprising water, graphite, an organic thickener, sodium molybdate, and sodium pentaborate. Other additives are sodium bicarbonate, ethylene glycol, or mica. The composition is effective in the hot forging of metals, is virtually non-flammable, and generates very little atmospheric pollution during use.Type: GrantFiled: May 30, 1978Date of Patent: September 1, 1981Assignee: Wyman-Gordon CompanyInventors: Sulekh C. Jain, Charles A. Morris
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Patent number: 4104178Abstract: A lubricant composition comprising water, graphite, an organic thickener, sodium molybdate, and sodium pentaborate. Other additives are sodium bicarbonate, ethylene glycol, or mica. The composition is effective in the hot forging of metals, is virtually non-flammable, and generates very little atmospheric pollution during use.Type: GrantFiled: August 9, 1976Date of Patent: August 1, 1978Assignee: Wyman-Gordon CompanyInventors: Sulekh C. Jain, Charles A. Morris
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Patent number: 3983042Abstract: A lubricant composition comprising water, graphite, an organic thickener, sodium molybdate, and sodium pentaborate. Other additives are sodium bicarbonate, ethylene glycol, or mica. The composition is effective in the hot forging of metals, is virtually non-flammable, and generates very little atmospheric pollution during use.Type: GrantFiled: October 24, 1975Date of Patent: September 28, 1976Assignee: Wyman-Gordon CompanyInventors: Sulekh C. Jain, Charles A. Morris