Patents by Inventor Ashish K. Sareen

Ashish K. Sareen 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).

  • Stiffness de-coupled skid landing gear
    Patent number: 6427942
    Abstract: A skid landing gear for a helicopter, in which the directional stiffnesses of the cross members of the skid landing gear have been de-coupled from one another, such that optimization of the longitudinal stiffniess of the cross members may be performed independently of the optimization of the vertical stiffniess and fatigue life of the cross members. In order to de-couple the stiffnesses in the skid type landing gear, two approaches are employed. In the first approach, the skid landing gear has non-symmetric-section cross members and/or distribution of different materials within the cross-section for de-coupling the vertical stiffness of the cross members from the longitudinal stiffness, such that placement of the ground resonance frequency may be optimized, while retaining the vertical stiffness properties essential for optimizing vertical energy attenuation and fatigue life.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: August 6, 2002
    Assignee: Bell Helicopter Textron Inc.
    Inventors: John V. Howard, Ramesh Thiagarajan, Michael R. Smith, Ashish K. Sareen
  • Stiffness de-coupled skid landing gear
    Publication number: 20020008175
    Abstract: A skid landing gear for a helicopter, in which the directional stiffnesses of the cross members of the skid landing gear have been de-coupled from one another, such that optimization of the longitudinal stiffness of the cross members may be performed independently of the optimization of the vertical stiffness and fatigue life of the cross members. In order to de-couple the stiffnesses in the skid type landing gear, two approaches are employed. In the first approach, the skid landing gear has non-symmetric-section cross members and/or distribution of different materials within the cross-section for de-coupling the vertical stiffness of the cross members from the longitudinal stiffness, such that placement of the ground resonance frequency may be optimized, while retaining the vertical stiffness properties essential for optimizing vertical energy attenuation and fatigue life.
    Type: Application
    Filed: June 8, 2001
    Publication date: January 24, 2002
    Applicant: Bell Helicopter Textron Inc.
    Inventors: John V. Howard, Ramesh Thiagarajan, Michael R. Smith, Ashish K. Sareen
  • Stiffness de-coupled skid landing gear
    Patent number: 6244538
    Abstract: A skid landing gear for a helicopter, in which the directional stiffnesses of the cross members of the skid landing gear have been de-coupled from one another, such that optimization of the longitudinal stiffness of the cross members may be performed independently of the optimization of the vertical stiffness and fatigue life of the cross members. In order to de-couple the stiffnesses in the skid type landing gear, two approaches are employed. In the first approach, the skid landing gear has non-symmetric-section cross members and/or distribution of different materials within the cross-section for de-coupling the vertical stiffness of the cross members from the longitudinal stiffness, such that placement of the ground resonance frequency may be optimized, while retaining the vertical stiffness properties essential for optimizing vertical energy attenuation and fatigue life.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: June 12, 2001
    Assignee: Bell Helicopter Textron Inc.
    Inventors: John V. Howard, Ramesh Thiagarajan, Michael R. Smith, Ashish K. Sareen