Patents by Inventor Ole Friis Knudsen

Ole Friis Knudsen 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: 7954363
    Abstract: An improved method for detection of engine faults especially suited for use on ships. The method is in particular related to the detection of a fault in an internal combustion engine having within the housing a crankshaft connected to a piston. The method includes determination of a pressure difference between the housing and the area outside the housing. If comparison of the pressure difference with a fault indicating pressure difference limit shows that the pressure difference is greater than the fault indication pressure difference limit then the presence of the fault is indicated. According to the method is in the pressure difference determined by comparing the pressure existing in the housing with the pressure of the area outside the housing, while attenuating pressure changes of the area outside the housing, so that pressure changes having a duration equal to or less than a defined fault characteristic period of time are supposed.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: June 7, 2011
    Assignee: Danfoss A/S
    Inventor: Ole Friis-Knudsen
  • Publication number: 20080282784
    Abstract: An improved method for detection of engine faults especially suited for use on ships. The method is in particular related to the detection of a fault in an internal combustion engine having within the housing a crankshaft connected to a piston. The method includes determination of a pressure difference between the housing and the area outside the housing. If comparison of the pressure difference with a fault indicating pressure difference limit shows that the pressure difference is greater than the fault indication pressure difference limit then the presence of the fault is indicated. According to the method is in the pressure difference determined by comparing the pressure existing in the housing with the pressure of the area outside the housing, while attenuating pressure changes of the area outside the housing, so that pressure changes having a duration equal to or less than a defined fault characteristic period of time are supposed.
    Type: Application
    Filed: July 13, 2006
    Publication date: November 20, 2008
    Applicant: Danfoss A/S
    Inventor: Ole Friis-Knudsen
  • Patent number: 6676441
    Abstract: In order, in a simple and reliable manner, to effect a seal in the region of the lead feedthroughs in a housing for an electrical device, in particular a measuring transducer, through the wall (2of which housing at least one electrical lead (3) is introduced into the housing (1) and is sealed against the wall (2) by a sealant, tar (6) is used as the sealant.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: January 13, 2004
    Assignee: Danfoss A/S
    Inventor: Ole Friis Knudsen