Patents by Inventor Linda Almqvist

Linda Almqvist 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).

  • System and a method for the steam pre-treatment of chips in association with the production of chemical cellulose pulp
    Patent number: 8052843
    Abstract: The vessel in which the chips are pre-treated with steam (ST) is provided with a ventilation channel at the top of the vessel for the leading away of weak gases to a weak gas system (NCG). A simple safety system has been installed with the aim of guaranteeing that these weak gases do not reach a level of concentration at which these weak gases become explosive. The safety system has a control unit (CPU) that detects a process parameter that is indicative of the fraction of moisture in the weak gases and opens dilution lines that supply air for the dilution of the weak gases in the ventilation channel. It is appropriate that the dilution take place in stages, where the dilution lines are opened in stages with successively increasing temperature of the weak gases.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: November 8, 2011
    Assignee: Metso Paper Sweden AB
    Inventors: Vidar Snekkenes, Linda Almqvist, Daniel Trolin, Lennart Gustavsson
  • SYSTEM AND A METHOD FOR THE STEAM PRE-TREATMENT OF CHIPS IN ASSOCIATION WITH THE PRODUCTION OF CHEMICAL CELLULOSE PULP
    Publication number: 20090301673
    Abstract: The vessel in which the chips are pre-treated with steam (ST) is provided with a ventilation channel at the top of the vessel for the leading away of weak gases to a weak gas system (NCG). A simple safety system has been installed with the aim of guaranteeing that these weak gases do not reach a level of concentration at which these weak gases become explosive. The safety system has a control unit (CPU) that detects a process parameter that is indicative of the fraction of moisture in the weak gases and opens dilution lines that supply air for the dilution of the weak gases in the ventilation channel. It is appropriate that the dilution take place in stages, where the dilution lines are opened in stages with successively increasing temperature of the weak gases.
    Type: Application
    Filed: November 30, 2006
    Publication date: December 10, 2009
    Inventors: Vidar Snekkenes, Linda Almqvist, Daniel Trolin, Lennart Gustavsson