Patents by Inventor Chandrashekhar Tiwari

Chandrashekhar Tiwari 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).

  • Skin impact snubber
    Patent number: 9656735
    Abstract: In some embodiments, an aircraft includes a structural assembly, a skin, and a snubber. The structural assembly comprises a first rigid element and a second rigid element. The first and second rigid elements are separated from each over by a void. The skin is disposed proximate to the structural assembly and adjacent to the void such that the skin would deflect into the void in response to an impact force received by the skin. The snubber is disposed in the void between the first and second rigid elements and positioned such that, when the skin deflects in response to the impact force, the skin contacts the snubber and the snubber reduces further deflection of the skin into the void.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 23, 2017
    Assignee: Bell Helicopter Textron Inc.
    Inventors: John R. Wittmaak, Jr., Philip J. Hannan, Maxx S. Lucas, Chandrashekhar Tiwari
  • Skin Impact Snubber
    Publication number: 20160185436
    Abstract: In some embodiments, an aircraft includes a structural assembly, a skin, and a snubber. The structural assembly comprises a first rigid element and a second rigid element. The first and second rigid elements are separated from each over by a void. The skin is disposed proximate to the structural assembly and adjacent to the void such that the skin would deflect into the void in response to an impact force received by the skin. The snubber is disposed in the void between the first and second rigid elements and positioned such that, when the skin deflects in response to the impact force, the skin contacts the snubber and the snubber reduces further deflection of the skin into the void.
    Type: Application
    Filed: June 2, 2014
    Publication date: June 30, 2016
    Applicant: Bell Helicopter Textron Inc.
    Inventors: John R. Wittmaak, JR., Philip J. Hannan, Maxx S. Lucas, Chandrashekhar Tiwari
  • Energy absorbing stitch ripping composite tubes containing collapsible cells
    Patent number: 8828513
    Abstract: An energy absorbing system has an inner tube and an outer tube that are stitched together. The inner tube contains a set of fibers oriented in a first direction and the outer tube has a second set of fibers oriented in a direction different from the first direction. Preferably these orientations are equal and opposite to each other. The inner tube may be hollow, but preferably has a cellular core. The outer tube may be spaced apart from the inner tube to create an annular cavity that is filled with a cellular material.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: September 9, 2014
    Assignee: The Penn State Research Foundation
    Inventors: Chandrashekhar Tiwari, Edward C. Smith, Charles E. Bakis, Michael A. Yukish, William Kong
  • Energy Absorbing Stitch Ripping Composite Tubes Containing Collapsible Cells
    Publication number: 20100040815
    Abstract: An energy absorbing system has an inner tube and an outer tube that are stitched together. The inner tube contains a set of fibers oriented in a first direction and the outer tube has a second set of fibers oriented in a direction different from the first direction. Preferably these orientations are equal and opposite to each other. The inner tube may be hollow, but preferably has a cellular core. The outer tube may be spaced apart from the inner tube to create an annular cavity that is filled with a cellular material.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 18, 2010
    Applicant: The Penn State Research Foundation
    Inventors: Chandrashekhar Tiwari, Edward C. Smith, Charles E. Bakis, Michael A. Yukish, William Kong