Patents Assigned to Kisa Tra AB
  • Method for preventing the spontaneous combustion of stored organic and inorganic substances
    Patent number: 4270612
    Abstract: Apparatus and method for preventing the spontaneous combustion of a stack of stored organic and inorganic substances by injecting a control medium into selected areas of the stack. The apparatus comprises a source of a control medium such as air, steam, combustion gas or a salt solution, and injection nozzles connected to the source of control medium for injecting controlled quantities of the control medium into selected areas of the stack.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: June 2, 1981
    Assignee: Kisa Tra AB
    Inventor: Carl Larsson
  • Forestry machines
    Patent number: 4098311
    Abstract: The invention relates to a method and apparatus for recovering forestry products in an economic manner, and in particular utilizes a base machine capable of recovering efficiently all the wood products obtained when logging timber.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: July 4, 1978
    Assignee: Kisa Tra AB
    Inventor: Carl Larsson