Patents by Inventor H.ang.kan Ohlsson

H.ang.kan Ohlsson 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: 6015453
    Abstract: A refrigeration system comprises a compressor, a condenser, a receiver and an evaporator, each having an inlet and an outlet, and a separator having an inlet and a first and second outlet, connected to each other conventionally. The separator is positioned laterally of the evaporator and closer thereto than to the compressor. A controller ensures overfeed of the evaporator by regulating the feed rate of liquid refrigerant from the receiver such that the separator is feeding the evaporator with liquid refrigerant in proportion to demand and safeguarding the desired overfeed. The separator comprises a cylindrical container having two outlets and an inlet for separating the vapor and liquid components of a refrigerant. The inlet is directed tangentially into the cylindrical container.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: January 18, 2000
    Assignee: Frigoscandia Equipment AB
    Inventors: Ketil Haugen, H.ang.kan Ohlsson, Per-Oskar Persson
  • Patent number: 5857347
    Abstract: A refrigeration system comprises a compressor, a condenser, a receiver and an evaporator, each having an inlet and an outlet, and a separator having an inlet and a first and a second outlet, connected to each other conventionally. The separator is positioned laterally of the evaporator and closer thereto than to the compressor. A controller ensures overfeed of the evaporator by regulating the feed rate of liquid refrigerant from the receiver such that the separator is feeding the evaporator with liquid refrigerant in proportion to demand and safeguarding the desired overfeed. The separator comprises a cylindrical container having two outlets and an inlet for separating the vapor and liquid components of a refrigerant. The inlet is directed tangentially into the cylindrical container.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: January 12, 1999
    Assignee: Frigoscandia Equipment AB
    Inventors: Ketil Haugen, H.ang.kan Ohlsson, Per-Oskar Persson
  • Patent number: 4905263
    Abstract: A method and a device for inspecting a joint such as the joint at the rim of a container. Radiant energy is directed into a small area of irradiation on the joint and the container rim is moved relative to the radiant energy so that the area of irradiation moves in one direction along the rim. Additionally, the area of irradiation is scanned crosswise to the one direction to move the area of irradiation across the width of the joint. Radiant energy reflected from the area of irradiation is detected. This radiant energy indicates the characteristics of the joint. The characteristics indicated by the radiant energy are compared to predetermined set value characteristics to detect product residue or other defects in the joint.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: February 27, 1990
    Assignee: AB Akerlund & Rausing
    Inventors: Lennart Larsson, Bo Ullman, H.ang.kan Ohlsson
  • Patent number: 4852136
    Abstract: A method and a device for inspecting a joint such as the joint at the rim of a container. Radiant energy is directed into a small area of irradiation on the joint and the container rim is moved relative to the radiant energy so that the area of irradiation moves in one direction along the rim. Additionally, the area of irradiation is scanned crosswise to the one direction to move the area of irradiation across the width of the joint. Radiant energy reflected from the area of irradiation or transmitted through the area of irradiation is detected. This radiant energy indicates the characteristics of the joint. The characteristics indicated by the radiant energy are compared to predetermined set value characteristics to detect product residue or other defects in the joint.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: July 25, 1989
    Assignee: AB Akerlund & Rausing
    Inventors: Lennart Larsson, Bo Ullman, H.ang.kan Ohlsson