Patents by Inventor Karl Hakansson

Karl Hakansson 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).

  • METHOD OF SPINNING FIBRES OR EXTRUSION, AND THE PRODUCTS OBTAINED
    Publication number: 20190032247
    Abstract: The invention relates to a continuous, scalable and parallelizable method for preparing strong and stiff fibres (filaments) or films. The fibre or film is prepared by utilizing hydrodynamically induced alignment of the constituents of a dispersion in combination with surface-charge controlled gel transition to produce fibres with a high degree of alignment of the constituents (polymer(s), fibrils etc.). The invention also relates to the fibres or films so formed.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Inventors: Daniel Söderberg, Fredrik Lundell, Andreas Fall, Karl Håkansson, Mathias Kvick, Lars Wågberg
  • Method of spinning fibres or extrusion, and the products obtained
    Patent number: 10132005
    Abstract: The invention relates to a continuous, scalable and parallelizable method for preparing strong and stiff fibers (filaments) or films. The fiber or film is prepared by utilizing hydrodynamically induced alignment of the constituents of a dispersion in combination with surface-charge controlled gel transition to produce fibers with a high degree of alignment of the constituents (polymer(s), fibrils etc). The invention also relates to the fibers or films so formed.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: November 20, 2018
    Assignee: RISE Innventia AB
    Inventors: Daniel Söderberg, Fredrik Lundell, Andreas Fall, Karl Håkansson, Mathias Kvick, Lars Wågberg
  • METHOD OF SPINNING FIBRES OR EXTRUSION, AND THE PRODUCTS OBTAINED
    Publication number: 20150292114
    Abstract: The invention relates to a continuous, scalable and parallelizable method for preparing strong and stiff fibres (filaments) or films. The fibre or film is prepared by utilizing hydrodynamically induced alignment of the constituents of a dispersion in combination with surface-charge controlled gel transition to produce fibres with a high degree of alignment of the constituents (polymer(s), fibrils etc). The invention also relates to the fibres or films so formed.
    Type: Application
    Filed: October 22, 2013
    Publication date: October 15, 2015
    Inventors: Daniel Söderberg, Fredrik Lundell, Andreas Fall, Karl Håkansson, Mathias Kvick, Lars Wågberg
  • Energy recovery in electromechanical motors
    Patent number: 6563251
    Abstract: In a method according to the present invention, charging and discharging of motor phases (10A, 10B) in an electromechanical motor is performed with a small voltage difference between the voltage source and the capacitive load of the motor phase (10A, 10B). This is accomplished by connecting a series of voltage sources (36), one at a time. Energy from the discharging operation is stored to be used in subsequent charging operations. In a device according to the present invention, the voltage sources (36) are preferably provided by means of capacitive or induction voltage step-up or step-down circuits. Preferably, switches (34) control the charging and discharging. In a preferred embodiment, the capacitance of one motor phase (10A) is used for storing charge resulting from the discharge from another motor phase (10B).
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 13, 2003
    Assignee: Piezomotor Uppsala AB
    Inventors: Anders Jansson, Karl Håkansson, Stefan Johansson
  • Energy recovery in electromechanical motors
    Publication number: 20020113563
    Abstract: In a method according to the present invention, charging and discharging of motor phases (10A, 10B) in an electromechanical motor is performed with a small voltage difference between the voltage source and the capacitive load of the motor phase (10A, 10B). This is accomplished by connecting a series of voltage sources (36), one at a time. Energy from the discharging operation is stored to be used in subsequent charging operations. In a device according to the present invention, the voltage sources (36) are preferably provided by means of capacitive or induction voltage step-up or step-down circuits. Preferably, switches (34) control the charging and discharging. In a preferred embodiment, the capacitance of one motor phase (10A) is used for storing charge resulting from the discharge from another motor phase (10B).
    Type: Application
    Filed: February 20, 2001
    Publication date: August 22, 2002
    Inventors: Anders Jansson, Karl Hakansson, Stefan Johansson