Patents by Inventor Rahul Rangarajan

Rahul Rangarajan 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: 10260576
    Abstract: A system for controlling transmission shifting includes a controller that receives a shift request signal and determines if a clutch has been unapplied for more than a predetermined time. With a yes determination, a maximum fill time value for hydraulic fluid to be applied to a clutch control circuit is determined, the maximum fill time value being a function of time the clutch has been unapplied and temperature. A signal indicative of an amount of engine RPM flare after the transmission executes the requested shift is received and a modified maximum fill time value is determined as a function of this flare. The modified maximum fill time value is stored as a replacement for the maximum fill time value for use with a subsequent transmission shifts using this clutch, and reduces an amount of air in the control circuit and an amount of flare with subsequent transmission shifts.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 16, 2019
    Assignee: FCA US LLC
    Inventors: Nathan J Saliga, Rahul Rangarajan, Jeffrey E Ross
  • Publication number: 20180058520
    Abstract: A system for controlling transmission shifting includes a controller that receives a shift request signal and determines if a clutch has been unapplied for more than a predetermined time. With a yes determination, a maximum fill time value for hydraulic fluid to be applied to a clutch control circuit is determined, the maximum fill time value being a function of time the clutch has been unapplied and temperature. A signal indicative of an amount of engine RPM flare after the transmission executes the requested shift is received and a modified maximum fill time value is determined as a function of this flare. The modified maximum fill time value is stored as a replacement for the maximum fill time value for use with a subsequent transmission shifts using this clutch, and reduces an amount of air in the control circuit and an amount of flare with subsequent transmission shifts.
    Type: Application
    Filed: August 4, 2017
    Publication date: March 1, 2018
    Inventors: Nathan J. Saliga, Rahul Rangarajan, Jeffrey E. Ross
  • Patent number: 9896813
    Abstract: A method of preventing soil erosion in, among areas, seaside locations, includes drilling holes in the ground and filling the holes with a mixture of the soil and gelatin, and then curing the mixture in situ to form a barrier against soil erosion.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: February 20, 2018
    Inventors: Nicholas Ford, Gavin Garland, Randy Garland, Albert Kim, Ian Lindberg, John Lindberg, Michael Mirabito, Michael Nogaj, Thomas Rafferty, Rahul Rangarajan, Michael Shepherd
  • Publication number: 20170051463
    Abstract: A method of preventing soil erosion in, among areas, seaside locations, includes drilling holes in the ground and filling the holes with a mixture of the soil and gelatin, and then curing the mixture in situ to form a barrier against soil erosion.
    Type: Application
    Filed: August 30, 2016
    Publication date: February 23, 2017
    Inventors: Nicholas Ford, Gavin Garland, Randy Garland, Albert Kim, Ian Lindberg, John Lindberg, Michael Mirabito, Michael Nogaj, Thomas Rafferty, Rahul Rangarajan, Michael Shepherd
  • Patent number: 9458587
    Abstract: Soil erosion in, among other areas, seaside locations, is prevented by the steps of: drilling holes in the ground; filling these holes with a mixture of the soil and gelatin, then curing the mixture in situ to form a barrier against soil erosion. The holes form stabilization walls and are placed seaside to a structure to be protected from erosion.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: October 4, 2016
    Inventors: Nicholas Ford, Gavin Garland, Randy Garland, Albert Kim, Ian Lindberg, John Lindberg, Michael Mirabito, Michael Nogaj, Thomas Rafferty, Rahul Rangarajan, Michael Shepherd
  • Publication number: 20150139732
    Abstract: A method of preventing soil erosion in, among areas, seaside locations, includes drilling holes in the ground and filling the holes with a mixture of the soil and gelatin, and then curing the mixture in situ to form a barrier against soil erosion.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 21, 2015
    Inventors: Nicholas Ford, Gavin Garland, Randy Garland, Albert Kim, Ian Lindberg, John Lindberg, Michael Mirabito, Michael Nogaj, Thomas Rafferty, Rahul Rangarajan, Michael Shepherd