Patents by Inventor Ghader Faraji

Ghader Faraji 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: 10981205
    Abstract: An improved apparatus and method of fabricating long nanostructured or ultrafine grained tubes includes, in one implementation, expanding and extruding a sample material through cyclic deformations. The first cycle begins with expanding the sample through a die unit by applying pressure using a punch box, then with extruding the sample by applying back pressure using a stationary mandrel, which in turn reduces the expanded sample diameter to the original diameter. The next cycle begins with inverting the die unit to further extrude the sample with no need to apply back pressure. Furthermore, resistant forces against the sample are reduced by using a lubricant material inside the die unit, thus allowing continuation of additional cycles without constraining the sample length, resulting in desired strength and elongation.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 20, 2021
    Inventors: Ghader Faraji, Mohammad Motallebi Savarabadi
  • Patent number: 10780477
    Abstract: An improved system and method of producing nanostructured or ultrafine grained metals is disclosed. In one embodiment, an improved system and method of producing nanostructured materials includes extruding the material through two deformation zones. The first zone consists of an inlet channel for inputting the material and a narrow channel through which the material is extruded, thus reducing its diameter. The second zone is an angular channel through which the compressed reduced diameter material is extruded to increase its diameter back to the original diameter. This eliminates the need for a dual press to provide back pressure to the material for increasing its diameter. Moreover, the total amount of strain applied to the material includes strain applied as a result of extrusion through the narrow channel and strain applied as a result of extrusion through the angular channel. As a result of the additional strain, fewer passes through the system are needed to achieve a desire strength.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 22, 2020
    Inventors: Mahnaz Ensafi, Ghader Faraji
  • Patent number: 10413951
    Abstract: A system and method for producing a seamless pipe from a hollow billet with a smaller diameter than the seamless pipe, uses a pressure container configured to house the hollow billet. The hollow billet is surrounded by a fluid. A movable punch arranged to fit inside the hollow billet, wherein a hydraulic pressure is transferred from the fluid to the movable punch and to the hollow billet simultaneously, along at least a partial length of the hollow billet. A die opening is arranged serial to the pressure container, wherein the die opening is configured to house a fixed mandrel, the fixed mandrel having a diameter larger than an inner diameter of the hollow billet, so that a gap is formed between the die opening and the fixed mandrel, and the hydraulic pressure of the fluid is generated by an input force from an input punch to move the hollow billet towards the die opening and force the hollow billet material into the gap between the die opening and the fixed mandrel.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: September 17, 2019
    Inventors: Seyed Sajjad Jamali, Karen Abrinia, Ghader Faraji
  • Publication number: 20180272400
    Abstract: An improved apparatus and method of fabricating long nanostructured or ultrafine grained tubes includes, in one implementation, expanding and extruding a sample material through cyclic deformations. The first cycle begins with expanding the sample through a die unit by applying pressure using a punch box, then with extruding the sample by applying back pressure using a stationary mandrel, which in turn reduces the expanded sample diameter to the original diameter. The next cycle begins with inverting the die unit to further extrude the sample with no need to apply back pressure. Furthermore, resistant forces against the sample are reduced by using a lubricant material inside the die unit, thus allowing continuation of additional cycles without constraining the sample length, resulting in desired strength and elongation.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 27, 2018
    Inventors: Ghader Faraji, Mohammad Motallebi Savarabadi
  • Publication number: 20180056350
    Abstract: An improved system and method of producing nanostructured or ultrafine grained metals is disclosed. In one embodiment, an improved system and method of producing nanostructured materials includes extruding the material through two deformation zones. The first zone consists of an inlet channel for inputting the material and a narrow channel through which the material is extruded, thus reducing its diameter. The second zone is an angular channel through which the compressed reduced diameter material is extruded to increase its diameter back to the original diameter. This eliminates the need for a dual press to provide back pressure to the material for increasing its diameter. Moreover, the total amount of strain applied to the material includes strain applied as a result of extrusion through the narrow channel and strain applied as a result of extrusion through the angular channel. As a result of the additional strain, fewer passes through the system are needed to achieve a desire strength.
    Type: Application
    Filed: November 6, 2017
    Publication date: March 1, 2018
    Inventors: Mahnaz Ensafi, Ghader Faraji
  • Publication number: 20180029097
    Abstract: A method of producing ultrafine-grained materials and a system for mass production of ultrafine-grained materials is disclosed. The system includes a die assembly with a die channel that extends from a first end to a second end. The system also includes first punch and a second punch. A lubricant is poured into a portion of the die channel to surround a workpiece that is positioned within the die channel in order to minimize the effects of friction during processing.
    Type: Application
    Filed: October 4, 2017
    Publication date: February 1, 2018
    Inventors: Ghader Faraji, Farshad Samadpour, Pejman Babaei
  • Publication number: 20170001228
    Abstract: A system and method for producing a seamless pipe from a hollow billet with a smaller diameter than the seamless pipe, uses a pressure container configured to house the hollow billet. The hollow billet is surrounded by a fluid. A movable punch arranged to fit inside the hollow billet, wherein a hydraulic pressure is transferred from the fluid to the movable punch and to the hollow billet simultaneously, along at least a partial length of the hollow billet. A die opening is arranged serial to the pressure container, wherein the die opening is configured to house a fixed mandrel, the fixed mandrel having a diameter larger than an inner diameter of the hollow billet, so that a gap is formed between the die opening and the fixed mandrel, and the hydraulic pressure of the fluid is generated by an input force from an input punch to move the hollow billet towards the die opening and force the hollow billet material into the gap between the die opening and the fixed mandrel.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 5, 2017
    Inventors: Seyed Sajjad Jamali, Karen Abrinia, Ghader Faraji