Patents by Inventor Lennart Lundbohm

Lennart Lundbohm 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).

  • Long-distance heating conduit
    Patent number: 4148341
    Abstract: A long-distance heating conduit comprising one or more tubes which carry the heating medium, are laid in the conduit and are surrounded individually or jointly by at least one layer of heat-insulating material and are covered by at least one cover foil which extends in a closed path round the tube or tubes and is provided with holes.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: April 10, 1979
    Assignee: Granges NYBY AB
    Inventor: Lennart Lundbohm
  • Cover means for protecting tubes conveying hot mediums
    Patent number: 4119751
    Abstract: A long-distance heating conduit comprising one or more tubes conveying the heating medium, which tubes are supported in the conduit by support means consisting of an insulating material resistant to compression and surrounded by a heat-insulating material also resistant to compression and enclosed by cover foils having holes, the size and shape of which are dimensioned in such a manner that water substantially cannot penetrate, but that they are permeable to gases and vapors.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: October 10, 1978
    Assignee: Nyby Bruk AB
    Inventors: Erland Nilsson, Lennart Lundbohm
  • Long distance heating conduit in particular for hot water lines
    Patent number: 3933181
    Abstract: A long-distance heating conduit comprising one or more tubes conveying the heating medium, which tubes are supported in the conduit by support means consisting of an insulating material resistant to compression and surrounded by a heat-insulating material also resistant to compression and enclosed by cover foils having holes, the size and shape of which are dimensioned in such a manner that water substantially cannot penetrate, but that they are permeable to gases and vapors.
    Type: Grant
    Filed: April 19, 1973
    Date of Patent: January 20, 1976
    Assignee: Nyby Bruk AB
    Inventors: Erland Nilsson, Lennart Lundbohm