Patents by Inventor Preben Koeningsfeldt

Preben Koeningsfeldt 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: 8459338
    Abstract: The invention relates to a scraped surface heat exchanger (100) comprising a heat exchanging wall (20) having an cylindrical inner surface (21) with a radius (R+.delta.), a shaft (10) being rotatable mounted inside of and concentrically to the inner surface (21) of the heat exchanging wall (20) and having at least one gap portion (10A) with an outer surface (11) and a radius (R), and at least one scraping member (40) supported by the shaft (10) and extending to the inner surface (21) of the heat exchanger wall (20), characterized in that the at least one or the gap portions (10A) with an outer surface (11) and a radius (R) extend over at least 60% of the circumference of the shaft (10).
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: June 11, 2013
    Assignee: INVENSYS APV A/S
    Inventors: Knud Thorsen, Preben Koeningsfeldt, Ole Poulsen
  • Publication number: 20120214977
    Abstract: The invention relates to a scraped surface heat exchanger (100) comprising a heat exchanging wall (20) having an cylindrical inner surface (21) with a radius (R+.delta.), a shaft (10) being rotatable mounted inside of and concentrically to the inner surface (21) of the heat exchanging wall (20) and having at least one gap portion (10A) with an outer surface (11) and a radius (R), and at least one scraping member (40) supported by the shaft (10) and extending to the inner surface (21) of the heat exchanger wall (20), characterised in that the at least one or the gap portions (10A) with an outer surface (11) and a radius (R) extend over at least 60% of the circumference of the shaft (10).
    Type: Application
    Filed: March 6, 2012
    Publication date: August 23, 2012
    Applicant: INVENSYS APV A/S
    Inventors: Knud THORSEN, Preben Koeningsfeldt, Ole Poulsen
  • Patent number: 8151869
    Abstract: The invention relates to a scraped surface heat exchanger (100) comprising a heat exchanging wall (20) having an cylindrical inner surface (21) with a radius (R+?), a shaft (10) being rotatable mounted inside of and concentrically to the inner surface (21) of the heat exchanging wall (20) and having at least one gap portion (10A) with an outer surface (11) and a radius (R), and at least one scraping member (40) supported by the shaft (10) and extending to the inner surface (21) of the heat exchanger wall (20), characterized in that the at least one or che gap portions (10A) with an outer surface (11) and a radius (R) extend over at least 60% of the circumference of the shaft (10).
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 10, 2012
    Assignee: Invensys APV A/S
    Inventors: Knud Thorsen, Preben Koeningsfeldt, Ole Poulsen
  • Publication number: 20090214739
    Abstract: The invention relates to a scraped surface heat exchanger (100) comprising a heat exchanging wall (20) having an cylindrical inner surface (21) with a radius (R+?), a shaft (10) being rotatable mounted inside of and concentrically to the inner surface (21) of the heat exchanging wall (20) and having at least one gap portion (10A) with an outer surface (11) and a radius (R), and at least one scraping member (40) supported by the shaft (10) and extending to the inner surface (21) of the heat exchanger wall (20), characterised in that the at least one or che gap portions (10A) with an outer surface (11) and a radius (R) extend over at least 60% of the circumference of the shaft (10).
    Type: Application
    Filed: October 4, 2006
    Publication date: August 27, 2009
    Applicant: INVENSYS APV A/S
    Inventors: Knud Thorsen, Preben Koeningsfeldt, Ole Poulsen