Patents by Inventor Prabhat Krishnaswamy

Prabhat Krishnaswamy 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: 8353317
    Abstract: An arrestor for arresting an axial ductile propagating fracture in a pipeline transporting a high-energy fluid is made from a material such that the arrestor deforms sufficiently when encountering a propagating fracture that the propagating fracture continues at least under the arrestor but the arrestor has enough strength that it ceases the crack propagation without ring-off of the pipeline. The material is filled with fiber characterized by having a stress-strain curve that passes thru the ranges between about 25 and 200 ksi in stress, and a deformation ranging from between about 5% strain and 35% strain, and having a diameter ranging between about 0.002 and 0.020 inches.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: January 15, 2013
    Inventors: Prabhat Krishnaswamy, Gery Wilkowski
  • Publication number: 20100084038
    Abstract: An arrestor for arresting an axial ductile propagating fracture in a pipeline transporting a high-energy fluid is made from a material such that the arrestor deforms sufficiently when encountering a propagating fracture that the propagating fracture continues at least under the arrestor but the arrestor has enough strength that it ceases the crack propagation without ring-off of the pipeline. The material is filled with fiber characterized by having a stress-strain curve that passes thru the ranges between about 25 and 200 ksi in stress, and a deformation ranging from between about 5% strain and 35% strain, and having a diameter ranging between about 0.002 and 0.020 inches.
    Type: Application
    Filed: December 10, 2009
    Publication date: April 8, 2010
    Inventors: Prabhat Krishnaswamy, Gery Wilkowski
  • Publication number: 20070169829
    Abstract: An arrestor for arresting an axial ductile propagating fracture in a pipeline transporting a high-energy fluid is made from a material such that the arrestor deforms sufficiently when encountering a propagating fracture that the propagating fracture continues at least under the arrestor but the arrestor has enough strength that it ceases the crack propagation without ring-off of the pipeline.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 26, 2007
    Inventors: Prabhat Krishnaswamy, Gery Wilkowski
  • Publication number: 20050205553
    Abstract: A magnetic pulse welding (MPW) or forming (MPF) device is provided having a split coil design, thereby facilitating the opening and closing thereof. As such, part/workpieces can be readily loaded and unloaded with respect thereto. This ability to easily load and unload parts is considered critical to the successful application of MPW technology to mass production environments. The open/split coil design includes a plurality of independent induction coil sections, allowing the device to be quickly opened/closed for loading/unloading of workpieces therewithin.
    Type: Application
    Filed: February 10, 2005
    Publication date: September 22, 2005
    Inventors: Wentao Cheng, Prabhat Krishnaswamy
  • Patent number: 6767634
    Abstract: A decorticated bast fiber such as from flax that is particularly suitable as a reinforcement for polymeric resins, thermoplastic, and thermoset composites. The invention specifically overcomes past difficulties involving compounding and injection molding of composite specimens with bast fiber reinforcements. In one form, ultrasonic energy is applied to decorticated bast fibers to cause fibrillation.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: July 27, 2004
    Inventor: Prabhat Krishnaswamy
  • Publication number: 20030065059
    Abstract: A decorticated bast fiber such as from flax that is particularly suitable as a reinforcement for polymeric resins, thermoplastic, and thermoset composites. The invention specifically overcomes past difficulties involving compounding and injection molding of composite specimens with bast fiber reinforcements. In one form, ultrasonic energy is applied to decorticated bast fibers to cause fibrillation.
    Type: Application
    Filed: April 5, 2002
    Publication date: April 3, 2003
    Inventor: Prabhat Krishnaswamy
  • Patent number: 6497956
    Abstract: Plastic lumber having sufficient stiffness and strength to allow its use in structural and load-bearing applications. The plastic lumber is composed of a thermoplastic polymer, a thermosetting polymer cured with reinforcing fibers and, preferably, a coupling agent and foaming or blowing agent. As a preferred embodiment, the thermosetting polymer and reinforcing fibers are sourced from recycled materials, specifically, sheet molding compounds and bulk molding compounds.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: December 24, 2002
    Assignee: Biolumber Inc.
    Inventors: Thomas E. Phillips, Prabhat Krishnaswamy
  • Patent number: 6391456
    Abstract: A thermoplastic composite lumber product having at least one layer of a reinforcing laminate containing unidirectional fibers of glass, carbon or ceramics. The thermoplastic composite lumber of the present invention exhibits superior stiffness and strength compared to typical, non-reinforced plastic lumber.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: May 21, 2002
    Assignee: Engineering Mechanics Corporation of Columbus
    Inventors: Prabhat Krishnaswamy, Duryodhan Mangaraj