Patents by Inventor Tilak R. Varma

Tilak R. Varma 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: 8549713
    Abstract: A security zipper is provided, which includes a consumer side zipper pair and a product side zipper pair, where each zipper pair is capable of secure mating. Between the zipper pairs is an intermediate flange pair which is layered with an adhesive as well as an adhesive enhancer to securely connect the intermediate flange pair. A slider is provided over the consumer side zipper pair, the product side zipper pair and the intermediate flange pair which mates the zipper pairs and connects the intermediate flanges so that the zipper is securely closed. A bag is also disclosed, which includes the security zipper and a connected product side pouch. In addition, a method for manufacturing the bag is disclosed.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 8, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: David J. Anzini, Eric Plourde, Robert C. Stolmeier, Lawrence Share, Owen J. McGarel, Tilak R. Varma, Kevin P. Olechowski, Paul Michael Jenkins, Kenny E. McCracken
  • Publication number: 20110283488
    Abstract: A security zipper is provided, which includes a consumer side zipper pair and a product side zipper pair, where each zipper pair is capable of secure mating. Between the zipper pairs is an intermediate flange pair which is layered with an adhesive as well as an adhesive enhancer to securely connect the intermediate flange pair. A slider is provided over the consumer side zipper pair, the product side zipper pair and the intermediate flange pair which mates the zipper pairs and connects the intermediate flanges so that the zipper is securely closed. A bag is also disclosed, which includes the security zipper and a connected product side pouch. In addition, a method for manufacturing the bag is disclosed.
    Type: Application
    Filed: November 22, 2010
    Publication date: November 24, 2011
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: David J. ANZINI, Eric PLOURDE, Robert C. STOLMEIER, Lawrence SHARE, Owen J. MCGAREL, Tilak R. VARMA, Kevin P. OLECHOWSKI, Paul Michael JENKINS, Kenny E. MCCRACKEN
  • Patent number: 7838095
    Abstract: A polymeric void-board is placed between adjacent horizontal layers of bricks to maintain an opening in a lower of the layers. The void-board is fabricated from a first relatively thin planar element having first and second surfaces having a plurality of parallel ribs extending from and generally transverse to the first surface and a second relatively thin planar element having first and second surfaces having a plurality of parallel ribs extending from and generally transverse to the first surface. The first and second elements are joined to one another with the ribs of the first element engaging and joined to the second element.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: November 23, 2010
    Assignee: Illinois Tool Works, Inc.
    Inventors: Tilak R. Varma, Lawrence Share, Lawrence R. Peck
  • Patent number: 7285748
    Abstract: The heating device includes a conductive layer which is positioned on an electrically insulative substrate. Preferably, the conductive layer is screen printed onto the substrate. The substrate is designed to limit elongation of the conductive layer, thereby improving the durability of the conductor and enabling the heating device to be used in flexible applications, such as automobile seats. The substrate can include at least one aperture passing therethough to further improve flexibility, fatigue resistance, and breathability of the heater. The conductive layer is configured to include a buss structure with a first buss ground inwardly adjacent from the periphery of the heating device and a first buss with serpentine paths extending from one edge of the heating device to another edge. The buss structure further includes a second buss with L-shaped portions positioned between the serpentine paths and the first buss ground. The second buss ground is located in a central location between the serpentine paths.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: October 23, 2007
    Assignee: Illinois Tool Works Inc.
    Inventors: James P. Nelson, Tilak R. Varma, Michael Starozhitsky, Paul J. Storiz, Edward Bulgajewski
  • Patent number: 7053344
    Abstract: A self-regulating flexible heater for automobiles and other vehicles which is comprised of a breathable substrate (10) to which is applied a coating (14) of a conductive material and a coating (12) of positive temperature coefficient material.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: May 30, 2006
    Assignee: Illinois Tool Works Inc
    Inventors: James Surjan, Fred A. Kish, Tilak R. Varma, Edward Bulgajewski, by Antoinette Chiovatero
  • Patent number: 6992129
    Abstract: A flame retardant composition includes a polymeric base material, a non-halogenated flame retardant material and a synergist material present in a concentration of about 1 percent by weight of the composition. The synergist is substantially free from metal oxides. The flame retardant composition achieves a flammability rating of at least V-2 when tested in accordance with UL testing conditions.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: January 31, 2006
    Assignee: Illinois Tool Works Inc.
    Inventors: Chris A. Benson, Tilak R. Varma, Lawrence L. Lezon
  • Patent number: 6989184
    Abstract: An extruded polymeric void-board is configured for placement between adjacent horizontal layers of bricks to maintain an opening in a lower layer of the bricks. The void-board is formed as a relatively thin planar element having first and second surfaces. A plurality of parallel ribs extend from and generally transverse to the first side. The ribs have a predetermined height to width ratio and have a height that is less than a thickness of the planar element. The ribs being formed parallel to one another. A method for forming a bundle of bricks with the void-board is also disclosed.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: January 24, 2006
    Assignee: Illinois Tool Works, Inc.
    Inventors: David J. Duke, William J. Williams, John M. Kruelle, Tilak R. Varma
  • Patent number: 6884965
    Abstract: The heating device includes a conductive layer which is positioned on an electrically insulative substrate. Preferably, the conductive layer is screen printed onto the substrate. The substrate is designed to limit elongation of the conductive layer, thereby improving the durability of the conductor and enabling the heating device to be used in flexible applications, such as automobile seats. The substrate can include at least one aperture passing therethough to further improve flexibility, fatigue resistance, and breathability of the heater. The conductive layer is configured to include a buss structure with a first buss ground inwardly adjacent from the periphery of the heating device and a first buss with serpentine paths extending from one edge of the heating device to another edge. The buss structure further includes a second buss with L-shaped portions positioned between the serpentine paths and the first buss ground. The second buss ground is located in a central location between the serpentine paths.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: April 26, 2005
    Assignee: Illinois Tool Works Inc.
    Inventors: James P. Nelson, Tilak R. Varma, Michael Starozhitsky, Paul J. Storiz, Edward Bulgajewski
  • Publication number: 20040170837
    Abstract: A flame retardant composition includes a polymeric base material, a non-halogenated flame retardant material and a synergist material present in a concentration of about 1 percent by weight of the composition. The synergist is substantially free from metal oxides. The flame retardant composition achieves a flammability rating of at least V-2 when tested in accordance with UL testing conditions.
    Type: Application
    Filed: October 30, 2003
    Publication date: September 2, 2004
    Inventors: Chris A. Benson, Tilak R. Varma, Lawrence L. Lezon
  • Publication number: 20030102296
    Abstract: The heating device includes a conductive layer which is positioned on an electrically insulative substrate. Preferably, the conductive layer is screen printed onto the substrate. The substrate is designed to limit elongation of the conductive layer, thereby improving the durability of the conductor and enabling the heating device to be used in flexible applications, such as automobile seats. The substrate can include at least one aperture passing therethough to further improve flexibility, fatigue resistance, and breathability of the heater. The conductive layer is configured to include a buss structure with a first buss ground inwardly adjacent from the periphery of the heating device and a first buss with serpentine paths extending from one edge of the heating device to another edge. The buss structure further includes a second buss with L-shaped portions positioned between the serpentine paths and the first buss ground. The second buss ground is located in a central location between the serpentine paths.
    Type: Application
    Filed: September 13, 2002
    Publication date: June 5, 2003
    Inventors: James P. Nelson, Tilak R. Varma, Michael Starozhitsky, Paul J. Storiz, Edward Bulgajewski