Patents by Inventor Anil Kumar Modi

Anil Kumar Modi 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).

  • Patent number: 8006749
    Abstract: Seal for tubular heat exchanger comprising groove with an inner edge; tongue of the diaphragm having front face extending in the radial direction and inner edge parallel to the axis of the channel; the face extending beyond the radial width of the groove in inward direction and overlapping the face of the shoulder of the channel in which the groove being provided. The tongue of the diaphragm being thus kept away from entering the groove; the diaphragm having flexibility to permit deflection of the tongue, the tongue of the diaphragm being loaded from outer side by the internal compression ring, the said internal compression ring being loaded in turn by the threaded push bolts/rods being fitted in the threaded holes on periphery of the threaded lock ring. This load is ultimately transferred to the joint between the gasket and face to achieve leak-proof joint.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: August 30, 2011
    Assignee: Larsen & Toubro Limited
    Inventors: Anil Kumar Modi, Veeravali Ramesh Nembilli, Venkatesh Murur
  • Patent number: 8006748
    Abstract: Sealing arrangement for an internal tubesheet for tubular heat exchangers comprising, a gasket fitted between a shoulder and a tubesheet, the gasket being made of spiral wound construction but without any metallic rings and without any locating groove in the adjoining components. On the outer side of the tubesheet, a channel box is provided with its inner face resting on a shoulder provided on an outer diameter of the tubesheet while the outer face of the channel box is reduced in diameter and arranged to align with the centerline of the push bolts, the outer face of the channel box resting against and attached to an annular ring and the push bolts being provided in threaded holes that reach up to the outer face of an internal flange. The push bolts, when tightened, load the annular ring, which in turn loads the gasketed joint through the channel box and the tubesheet.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: August 30, 2011
    Assignee: Larsen & Toubro Limited
    Inventors: Anil Kumar Modi, Veeravali Ramesh Nembilli, Venkatesh Murur
  • Patent number: 7882978
    Abstract: Threaded channel closure for tubular heat exchanger comprising channel header wherein the gasket is provided at the shoulder of the channel, tongue of the diaphragm is provided to apply pressure on the gasket to achieve the sealed joint, outer compression ring provided at back side of the diaphragm and being loaded by push bolts, provided at the periphery of threaded lock ring, outer compression ring being supported by channel cover, which is kept in position by threaded lock ring, characterized in that, the channel header being provided with plurality of radial holes on its periphery, approximately at the centerline of the width of the outer compression ring in its assembled condition; the outer compression ring being provided with plurality of radial through holes matching the set of holes in number as well as angular position.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: February 8, 2011
    Assignee: Larsen & Toubro Limited
    Inventors: Anil Kumar Modi, Veeravali Ramesh Nembilli, Venkatesh Murur
  • Publication number: 20090133862
    Abstract: Threaded channel closure for tubular heat exchanger comprising channel header wherein the gasket is provided at the shoulder of the channel, tongue of the diaphragm is provided to apply pressure on the gasket to achieve the sealed joint, outer compression ring provided at back side of the diaphragm and being loaded by push bolts, provided at the periphery of threaded lock ring, outer compression ring being supported by channel cover, which is kept in position by threaded lock ring, characterized in that, the channel header being provided with plurality of radial holes on its periphery, approximately at the centerline of the width of the outer compression ring in its assembled condition; the outer compression ring being provided with plurality of radial through holes matching the set of holes in number as well as angular position.
    Type: Application
    Filed: May 3, 2007
    Publication date: May 28, 2009
    Applicant: LARSEN & TOUBRO LIMITED
    Inventors: Anil Kumar Modi, Veeravali Ramesh Nembilli, Venkatesh Murur
  • Publication number: 20090120608
    Abstract: Seal for tubular heat exchanger comprising groove with an inner edge; tongue of the diaphragm having front face extending in the radial direction and inner edge parallel to the axis of the channel; the face extending beyond the radial width of the groove in inward direction and overlapping the face of the shoulder of the channel in which the groove being provided. The tongue of the diaphragm being thus kept away from entering the groove; the diaphragm having flexibility to permit deflection of the tongue, the tongue of the diaphragm being loaded from outer side by the internal compression ring, the said internal compression ring being loaded in turn by the threaded push bolts/rods being fitted in the threaded holes on periphery of the threaded lock ring. This load is ultimately transferred to the joint between the gasket and face to achieve leak-proof joint.
    Type: Application
    Filed: April 20, 2007
    Publication date: May 14, 2009
    Applicant: LARSEN & TOUBRO LIMITED
    Inventors: Anil Kumar Modi, Verravali Ramesh Nembilli, Venkatesh Murur
  • Publication number: 20090095453
    Abstract: Sealing arrangement for an internal tubesheet for tubular heat exchangers comprising, a gasket fitted between a shoulder and a tubesheet, the gasket being made of spiral wound construction but without any metallic rings and without any locating groove in the adjoining components. On the outer side of the tubesheet, a channel box is provided with its inner face resting on a shoulder provided on an outer diameter of the tubesheet while the outer face of the channel box is reduced in diameter and arranged to align with the centerline of the push bolts, the outer face of the channel box resting against and attached to an annular ring and the push bolts being provided in threaded holes that reach up to the outer face of an internal flange. The push bolts, when tightened, load the annular ring, which in turn loads the gasketed joint through the channel box and the tubesheet.
    Type: Application
    Filed: April 20, 2007
    Publication date: April 16, 2009
    Applicant: LARSEN & TOUBRO LIMITED
    Inventors: Anil Kumar Modi, Verravali Ramesh Nembilli, Venkatesh Murur