Patents by Inventor Sven-Olov Ostman

Sven-Olov Ostman 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).

  • PFBC power plant
    Patent number: 4944150
    Abstract: A power plant burning a fuel at a pressure exceeding the atmospheric pressure includes a combustor formed with cooled walls which form a feed water preheater. A by-pass conduit with a control valve for draining feed water is connected to a feed water conduit between the feed water preheater (the combustor walls) and an evaporator in the combustor. This by-pass conduit may be connected to a feed water tank. At a very low load and in the case of a gas turbine trip, the necessary water flow for cooling the walls of the combustor may exceed the requirement of feed water to the evaporator. Under these operating conditions feed water may be drained off ahead of the evaporator through the by-pass conduit.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: July 31, 1990
    Assignee: ABB Stal AB
    Inventor: Sven-Olov Ostman
  • Tubing assembly unit for boilers for use in connection with combustion on pressurized fluidized beds
    Patent number: D358879
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: May 30, 1995
    Assignee: ABB Carbon AB
    Inventor: Sven-Olov Ostman
  • Tubing assembly unit for boilers for use in connection with combustion on pressurized fluidizied beds
    Patent number: D359117
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: June 6, 1995
    Assignee: ABB Carbon AB
    Inventor: Sven-Olov Ostman