Patents by Inventor Rajiv SHIVPURI

Rajiv SHIVPURI 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).

  • DIE ASSEMBLY AND METHODS FOR FRICTION STIR EXTRUSION
    Publication number: 20240109112
    Abstract: Disclosed herein are devices and methods related to friction stir extrusion. In particular, the present disclosure relates to die assemblies configured for use in a forward friction stir extrusion system and die assemblies configured for use in a backward friction stir extrusion system. The die assemblies in the forward and backward friction stir extrusion systems can include a die piece comprising a sloped surface, wherein at least a portion of the sloped surface is a textured surface.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 4, 2024
    Inventor: Rajiv Shivpuri
  • Hot forming of cooling galleries in steel pistons
    Patent number: 10843254
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: November 24, 2020
    Assignee: Ohio State Innovation Foundation
    Inventor: Rajiv Shivpuri
  • HOT FORMING OF COOLING GALLERIES IN STEEL PISTONS
    Publication number: 20190344330
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventor: Rajiv Shivpuri
  • Hot forming of cooling galleries in steel pistons
    Patent number: 10363599
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 30, 2019
    Assignee: Ohio State Innovation Foundation
    Inventor: Rajiv Shivpuri
  • HOT FORMING OF COOLING GALLERIES IN STEEL PISTONS
    Publication number: 20190091757
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 28, 2019
    Inventor: Rajiv Shivpuri
  • Hot forming of cooling galleries in steel pistons
    Patent number: 10144052
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: December 4, 2018
    Assignee: Ohio State Innovation Foundation
    Inventor: Rajiv Shivpuri
  • HOT FORMING OF COOLING GALLERIES IN STEEL PISTONS
    Publication number: 20170232501
    Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 17, 2017
    Inventor: Rajiv SHIVPURI